Posted By: mopster
SB Edelbrock LA heads 304cfm@.600" - 05/31/11 02:05 PM
I got some nice flow numbers from these heads and I thought I could share it with you, so here you go 
SB Edelbrock LA heads 304cfm@.600"
Posted By: Otherlane
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 12:17 AM
Theor HP 628,what does that mean? is it say 304 CFM should make that power?
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 02:56 AM
What no PICS?????
Posted By: sixpackgut
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 03:30 AM
Quote:
Theor HP 628,what does that mean? is it say 304 CFM should make that power?
yes
http://www.wallaceracing.com/calcafhp.php
Posted By: mbogina
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 03:11 PM
General formula for potential power with a good combo is .257 x no. of cyl x flow at 28", so 305 cfm at 28", equates to a potential of around 628HP, just a ballpark, not a guarantee.
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 03:35 PM
Quote:
What no PICS?????
Well, itīs difficult to show any pictures of these without giving away the tricky stuff
I must say that I changed the shape of the intake runner quite radically, I did A LOT of grinding, and I had to use some epoxy to get the shape I wanted.
Posted By: quick77rt
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 03:43 PM
Dude, your in finland....I cant see anyone shipping you heads for 300 cfm, it would just be nice to see how others that claim 300 plus from these heads and yours compare thats all...but whatever 
Thanks for sharing the flow sheet
Thanks for sharing the flow sheet
Posted By: Quicktree
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 04:17 PM
Quote:I don't think you will find to many people interested in reshaping eddy heads around here. there is no reason to go through that. to many better choices of heads.Quote:
What no PICS?????
Well, itīs difficult to show any pictures of these without giving away the tricky stuff
I must say that I changed the shape of the intake runner quite radically, I did A LOT of grinding, and I had to use some epoxy to get the shape I wanted.
Posted By: racealittle
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 05:12 PM
I have a set of MCH cnc that flow 299cfm.
I'm sure the 'ball park' is the same.
I'm sure the 'ball park' is the same.
Posted By: tubtar
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 09:56 PM
Those are some very nice numbers for an Eddie head.........very nice indeed.
I'd be happy to have a set of those for a street / strip effort.
I'd be happy to have a set of those for a street / strip effort.
Posted By: quick77rt
Re: SB Edelbrock LA heads 304cfm@.600" - 06/01/11 11:43 PM
Its simple, when I look for REAL world numbers I refer to Ryans site as his motors are proven over and over again so Id rather go by his real world numbers vs the secret sauce mumbo jumbo....to get to the same point.
Ok cool, you got a set of heads that you say flow #300, welcome to the world of eddie heads.
My neighbors flow 325, hes so tight lipped he wont even show a flow sheet as its got secret stuff as well, so I think I know where your coming from.
On a different note, whats up?...not every set of eddies flowing 300 are packed with epoxy are they
Ok cool, you got a set of heads that you say flow #300, welcome to the world of eddie heads.
My neighbors flow 325, hes so tight lipped he wont even show a flow sheet as its got secret stuff as well, so I think I know where your coming from.
On a different note, whats up?...not every set of eddies flowing 300 are packed with epoxy are they
Posted By: moderncylinder
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:03 AM
with a 2.080 valve a little more than 300 cfm is a good normal number...
ive done magnum heads that are for super stock, 180 cc int runner, 2.020 valve,,, flow 285-290,, on a .060 over 360, 12/1, fuel injected make 685hp,, guy just set the record in ss/ia this past weekend,, in a 3200lb car or so went 9.62 at about 85% throttle,, ran high 9.40's at 3300lbs at 100% throttle
ive done magnum heads that are for super stock, 180 cc int runner, 2.020 valve,,, flow 285-290,, on a .060 over 360, 12/1, fuel injected make 685hp,, guy just set the record in ss/ia this past weekend,, in a 3200lb car or so went 9.62 at about 85% throttle,, ran high 9.40's at 3300lbs at 100% throttle
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:05 AM
Quote:
I don't think you will find to many people interested in reshaping eddy heads around here. there is no reason to go through that. to many better choices of heads.
I sure know that it wouldnīt be good business to do heads like these for customers, itīs just too much work. I did these for my own car, so it was not the money, but more like the lack of it why I did them
I still donīt know about posting pictures though...
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:19 AM
If you are not comfortable posting pictures,...don't
I give out a lot of free information on here that some people appreciate,and others?
It is just a service I like to provide.I know of others who call their work "proprietary".I like to help those that help me.
Some people do,some don't.I see no problem either way.
And not a slam at you,as I don't know your work,but it is not hard to make a port flow a lot of air,it is hard to make it flow air correctly.
Keith
I give out a lot of free information on here that some people appreciate,and others?
It is just a service I like to provide.I know of others who call their work "proprietary".I like to help those that help me.
Some people do,some don't.I see no problem either way.
And not a slam at you,as I don't know your work,but it is not hard to make a port flow a lot of air,it is hard to make it flow air correctly.
Keith
Posted By: racealittle
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:31 AM
Quote:
I have a set of MCH cnc that flow 299cfm.
I'm sure the 'ball park' is the same.
I'm sorry, it's been a while since I looked at the flow sheet. It's only 295 cfm. I still think it's in the ball park.
It doesn't matter to me. I have no intention of ever using the heads to their limit. I just wanted a good, proven performer for a cylinder head.
Posted By: cudadoug
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:37 AM
Yea, your choice on posting pics, but I really don't get it. I think many porters can get 300 cfm out of those Eddy heads... 
Posted By: quick77rt
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:42 AM
I sure know that it wouldnīt be good business to do heads like these for customers, itīs just too much work.
No people just dont like ugly, Ive a friend whos are around 300, a couple pr tubes have tubes from going to far, some epoxy, ect...the heads are plain ugly, looking at them id run, seeing the car run id want to buy them.
Dont be shy, post the pics we can all learn new things, my eddies are a consertive 285 with no epoxy or tubes, with square ports.
Ive seen the tops rounded a bit above the square port line and there is about an inch on the bottom thats thick that could be port matched to the intake, I myself am comfortable doing a lil radius on the top of the port but dont have the skills to know what working over the bottoms might help or hurt.
Quote:Quote:
I don't think you will find to many people interested in reshaping eddy heads around here. there is no reason to go through that. to many better choices of heads.
I sure know that it wouldnīt be good business to do heads like these for customers, itīs just too much work. I did these for my own car, so it was not the money, but more like the lack of it why I did them
I still donīt know about posting pictures though...
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 01:09 AM
This picture thing seems to be an issue, so Iīm going to post before Iīm labeled as an #sshole or something...
Just remember Iīm not a professional head porter, and Iīm sure other people can do those numbers without the ugly tubes and epoxy. Mine look like this. Now you can tell me how much needless work I have done. Iīm going to sleep now, itīs very late here.
Just remember Iīm not a professional head porter, and Iīm sure other people can do those numbers without the ugly tubes and epoxy. Mine look like this. Now you can tell me how much needless work I have done. Iīm going to sleep now, itīs very late here.
Posted By: quick77rt
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 01:14 AM
Looks like a well done even job, should of just posted them at the start.
Im courious about the work around the guides,dopnt take it the wrong way, pics help everyone learn.
Im courious about the work around the guides,dopnt take it the wrong way, pics help everyone learn.
Posted By: W5DART66
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 01:21 AM
Heads look nice but I would get rid of flow vain behind valve guides may show numbers on the bench but go slower down track/less power on the dyno.
Posted By: sixpackgut
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 02:03 AM
mopster, nice work 
I am curious as to what the Indybrock port looks like. mopsters ports look like alot of work when you can just use offset rockers and lose the pushrod pinch but i have never seen a picture of the port and would like to if someone could share
I am curious as to what the Indybrock port looks like. mopsters ports look like alot of work when you can just use offset rockers and lose the pushrod pinch but i have never seen a picture of the port and would like to if someone could share
Posted By: moderncylinder
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 02:03 AM
the epoxy in front of the guide will create an "anti" swirl to the natural pattern of swirl natural to the valve placement/position... ls motors have that cast in,,, you can get turbulant airflow, or air disconnecting from the short turn and the vane,, or a particular type of valve job will help the air stay connected as valve lift goes up. everyone has seen air get turbulent or a head loose airflow as lift increases,, what he did with the epoxy will help that not to happen,, and for the head to continue to gain as lift increased
putting more short side on the head with epoxy is not a bad idea..
putting more short side on the head with epoxy is not a bad idea..
Posted By: dusturbd340W5
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 02:38 AM
Quote:
mopster, nice work
I am curious as to what the Indybrock port looks like. mopsters ports look like alot of work when you can just use offset rockers and lose the pushrod pinch but i have never seen a picture of the port and would like to if someone could share
here is a CNC Indybrock port
Posted By: 1Fast340
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 12:57 PM
Mopster that looks good to me,and numbers are inline with what that much effort should give. the man that ported my edelbrocks didnt have much good to say about the sb edelbrock ports out of the box,the only thing he liked about them was that atleast they where not cast iron.
i gues those wings around the valveguide is to keep the airflow away from the exhaustvalve and minimize the amount of fresh fuel/air from taking a shortcut out into the exhuast during overlap?
i gues those wings around the valveguide is to keep the airflow away from the exhaustvalve and minimize the amount of fresh fuel/air from taking a shortcut out into the exhuast during overlap?
Posted By: S/ST 3040
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 01:37 PM
304 CFM or not, professional porter or not, uniform work with epoxy is not easy.
Posted By: LA360
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 02:09 PM
Looking at your work I imagine these are the not first set of heads you've ported. Nice looking work!
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 02:56 PM
Looks like you did a lot of work developing what you wanted.I,for one,can appreciate the need/want to do things yourself.
Please,keep us posted on the rest of the build!
Keith
Please,keep us posted on the rest of the build!
Keith
Posted By: Streetwize
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 04:12 PM
Nice work and I have no doubt your numbers are good judging from the amont of work I see in the shots. Also you have your base numbers for comparison which always make it easier to compare flow numbers to other benches.
What has always been interesting to me is hardly anyone talks about wet flow and that if you consider a (for example) 12:1 A/F ratio at 300cfm, 7.6 or so percent (or 23 cfm of that 300) is displaced by the Liquid Fuel in suspension and fuel doesn't always act or swirl around in the port exactly the same way that air can or does. Also everyone understands say 300 CFM for port comparison but how many think about that intake valve being shut for around 2/3'rds of that minute?
Even the more we know, we still learn more from "cause and effect." I've seen similar epoxy mods that picks up the airflow big on the flow bench but don't always correlate to a proportional increase in power. Also a port that doesn't work well with a carb may work extremely well with port injection (related to that very reason).
Ryan said something very insightful (I'm paraphrasing) that he doesn't neccessarily concentrate on the flow on the bench so much if you know from experience where to port to pick up the power...in the end that's really the bottom line becuase nobody races flowbenches
Take your intake duration at .050 and divide that by 720, take that fraction and multiply it by 60, that's how many seconds per minute your intake valve is actually open....and Unless I missed something that is constant regardless of RPM i use this to compare 2 cams @ .050 and .0200 becuase it gives you a 'real world" relative percentage comparison from one to the other.
What has always been interesting to me is hardly anyone talks about wet flow and that if you consider a (for example) 12:1 A/F ratio at 300cfm, 7.6 or so percent (or 23 cfm of that 300) is displaced by the Liquid Fuel in suspension and fuel doesn't always act or swirl around in the port exactly the same way that air can or does. Also everyone understands say 300 CFM for port comparison but how many think about that intake valve being shut for around 2/3'rds of that minute?
Even the more we know, we still learn more from "cause and effect." I've seen similar epoxy mods that picks up the airflow big on the flow bench but don't always correlate to a proportional increase in power. Also a port that doesn't work well with a carb may work extremely well with port injection (related to that very reason).
Ryan said something very insightful (I'm paraphrasing) that he doesn't neccessarily concentrate on the flow on the bench so much if you know from experience where to port to pick up the power...in the end that's really the bottom line becuase nobody races flowbenches
Take your intake duration at .050 and divide that by 720, take that fraction and multiply it by 60, that's how many seconds per minute your intake valve is actually open....and Unless I missed something that is constant regardless of RPM
i use this to compare 2 cams @ .050 and .0200 becuase it gives you a 'real world" relative percentage comparison from one to the other.
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/02/11 04:36 PM
Thanks alot for the pics. I'm doing a pair right now and I'll post pics of mine this weekend...they are right at 302cfm at .650.
It's just fun to share...that's what this site was all about a few years ago...
Brian
It's just fun to share...that's what this site was all about a few years ago...
Brian
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/03/11 12:36 AM
About the epoxy mod around the guide; itīs there to keep the port not stalling at higher lifts, just as moderncylinder said. I think It depends entirely of the port shape if it works or not. I wasnīt planning to do it at the beginning, but the way the port ended up, I felt it must be done. I Didnīt do any flowbench testing with that so I canīt be absolutelu sure if itīs needed. In fact, I didnīt do any flowbench testing with the port shape at all, I only tested a few variations in seat work.
I got the intake done today. It was a lot of grinding too, I had to remove about 25cc from each port to get the size right. Hereīs a pic I took earlier. Who recognizes the intake?
OU812, Iīm looking forward to see your work.
I got the intake done today. It was a lot of grinding too, I had to remove about 25cc from each port to get the size right. Hereīs a pic I took earlier. Who recognizes the intake?
OU812, Iīm looking forward to see your work.
Posted By: S/ST 3040
Re: SB Edelbrock LA heads 304cfm@.600" - 06/03/11 12:44 AM
An M-1 tunnel ram?
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/03/11 12:52 AM
Bingo.
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/04/11 12:13 PM
I was just finishing the seat work to match the best flowing port I tested, and I thought of something... This port was my "wild card" and I didnīt expect it to be the best one, and beside the seat, it actually had one another thing different than the other ports. I have been doing some studying now with the flow sheets,and compared them to results I got from similar testing with another set of heads, and I think that this another thing is actually hurting the flow.
I arranged some flowbench time for tomorrow, and Iīll report when I have new results. I donīt know if I will gain anything, but I must do this or I canīt sleep at nights
I arranged some flowbench time for tomorrow, and Iīll report when I have new results. I donīt know if I will gain anything, but I must do this or I canīt sleep at nights
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/05/11 03:57 PM
Didnīt gain more flow, but I found out it wasnīt the seat that made the port better but this other thing, which was slightly different short turn shape. Now Iīm going to even them out and thats it, no more testing.
Posted By: LSP
Re: SB Edelbrock LA heads 304cfm@.600" - 06/05/11 08:07 PM
Quote:
ive done magnum heads that are for super stock, 180 cc int runner, 2.020 valve,,, flow 285-290,, on a .060 over 360, 12/1, fuel injected make 685hp,, guy just set the record in ss/ia this past weekend,, in a 3200lb car or so went 9.62 at about 85% throttle,, ran high 9.40's at 3300lbs at 100% throttle
Nice job, are intake port and bowl in the Edelbrock Magnum head similar at all to the Mopar Magnum RT iron head?
Posted By: moderncylinder
Re: SB Edelbrock LA heads 304cfm@.600" - 06/05/11 11:46 PM
no
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:34 AM
Quote:
OU812, Iīm looking forward to see your work.
Here's some pics...
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:45 AM
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:48 AM
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:50 AM
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:52 AM
pump gas 408 and solid roller cam!
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 05:53 AM
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 09:03 PM
That engine with those heads made 621HP this morning on pump gas. TQ was 541. Roller cam, 10.9:1, 1050, TTI 1 7/8 x 3.5" header.
Posted By: justinp61
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 09:10 PM
Brian, do you mind sharing the specs on the cam? Intake? How much power/tq do you think it would give up with a 950 HP?
Thanks
Thanks
Posted By: Quicktree
Re: SB Edelbrock LA heads 304cfm@.600" - 06/08/11 09:20 PM
Quote:very nice
I like the blacked out carb and valve covers.
Posted By: Cudahlr
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 12:20 AM
Quote:
That engine with those heads made 621HP this morning on pump gas. TQ was 541. Roller cam, 10.9:1, 1050, TTI 1 7/8 x 3.5" header.
What belt drive is that?
Posted By: LA360
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 12:24 AM
It looks like a Jesel, can't see an idler/adjuster pulley for it to be a Weber
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 12:31 AM
Yep, Jesel stepped up and helped us with the drive. It fits R3 blocks, but we fanangled it to work on a stock block with Meziere helping us with the water outlets so we could swap cams, and make adjustments easier and quicker.
Just ran out of time to make any more HP but I believe there is at least 5-10 more in it with porting the adapter and lash change but no time left...was a looooooong 2 days!
Brian
Just ran out of time to make any more HP but I believe there is at least 5-10 more in it with porting the adapter and lash change but no time left...was a looooooong 2 days!
Brian
Posted By: Cudahlr
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 12:34 AM
Impressive Numbers! Can we have anymore details? Did you happen to test it with any other headers?
Posted By: FlyFish
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 02:07 AM
Can you give us the cam specs on that Brian?
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 04:43 AM
Well...it's going in a mag, so I'll be vague. We tried TTI 1 7/8 x 3" and 3.5" collectors, spacers, moved the cam around, lash, 3 carbs, timing.
Father time was kickin' our but on this build and just ran out of time to try a different cam combo.
Cam was in the 260's @ .050 and lift was mid 600's.
OOTB 1000HP did very well against everything the PC 1000HP and PC dominator but the dommy was KING from 4000rpm to redline!
Father time was kickin' our but on this build and just ran out of time to try a different cam combo.
Cam was in the 260's @ .050 and lift was mid 600's.
OOTB 1000HP did very well against everything the PC 1000HP and PC dominator but the dommy was KING from 4000rpm to redline!
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 10:19 AM
Nice work and nice HP numbers How did those heads do in flowbench? What size intake valve you used?
How did those heads do in flowbench? What size intake valve you used?
Posted By: HardcoreB
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 01:09 PM
Nice work IMM.
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 02:26 PM
Quote:
Nice work IMM.
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/09/11 02:27 PM
Quote:
Nice work and nice HP numbers
295@ .500 and 305@ .700 with a 2.08 Manley valve.
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 07:48 AM
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 07:57 AM
Itīs a 408 pump gas street engine with 10.7:1 CR, MP .590" flat tappet cam and 1.6 rockers
Posted By: Guitar Jones
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 11:18 AM
Quote:
That engine with those heads made 621HP this morning on pump gas. TQ was 541. Roller cam, 10.9:1, 1050, TTI 1 7/8 x 3.5" header.
Oh man, everyone on the interweb knows a stock block won't take more than 600 horsepower.
Nice build and nice numbers. Hell some people were telling me I wouldn't make 650, and I have W5's and a tunnel ram. We'll soon find out though. Hopefully.
Posted By: LA360
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 12:32 PM
Quote:
I make a nice compact set up for your block hardware for a remote oiling system, it would be a third as tall as the one you are running now
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 03:54 PM
Quote:
Itīs a 408 pump gas street engine with 10.7:1 CR, MP .590" flat tappet cam and 1.6 rockers
Looks like a nice build! Will this go on a dyno to be tuned,or straight to the car?
I think it will perform pretty well once you get it all dialed in.
Keith
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 04:28 PM
No time for dyno, I have a race next weekend 
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 04:41 PM
The reason I ask is,I was wondering what you used for an installed centerline? I tested an older version of the MP 4120657 camshaft in my 421. I played around with the camshaft timing to see what it would do. This was an older version,312-106 that has a .404 lobe lift instead of the current design.
I know a lot of people say to advance these camshafts a lot more than the MP recommendation, but with mine,it lost quite a bit of power past 104 installed. Every engine will be different,but I just thought I would pass it on.
Keith
I know a lot of people say to advance these camshafts a lot more than the MP recommendation, but with mine,it lost quite a bit of power past 104 installed. Every engine will be different,but I just thought I would pass it on.
Keith
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 06:39 PM
I have it at 104.
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 07:51 PM
Quote:
The reason I ask is,I was wondering what you used for an installed centerline? I tested an older version of the MP 4120657 camshaft in my 421. I played around with the camshaft timing to see what it would do. This was an older version,312-106 that has a .404 lobe lift instead of the current design.
I know a lot of people say to advance these camshafts a lot more than the MP recommendation, but with mine,it lost quite a bit of power past 104 installed. Every engine will be different,but I just thought I would pass it on.
Keith
I'll pass this on as well since we're in the sharing mood...
Our engine we just did liked straight up best. This was on a 112lca.
Brian
Posted By: abodiesonly1
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 08:30 PM
Quote:
The reason I ask is,I was wondering what you used for an installed centerline? I tested an older version of the MP 4120657 camshaft in my 421. I played around with the camshaft timing to see what it would do. This was an older version,312-106 that has a .404 lobe lift instead of the current design.
I know a lot of people say to advance these camshafts a lot more than the MP recommendation, but with mine,it lost quite a bit of power past 104 installed. Every engine will be different,but I just thought I would pass it on.
Keith
Any info on the current design? I just installed the current .590 to try out and installed it on a 102. Will keep ya posted on what it likes.
Posted By: Streetwize
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 09:37 PM
I've genereally found if the port cross section is relatively small compared the the cylinder swept volume (as is usually the case with a lot of wedge strokers), putting the cam in later helps the top end power, also an under-ported motor (if it has any decent compression) generally has an abundance of torque to begin with.
Advancing the cam generally works well when you've got plenty of port, adequate cam and compression but you're wanting to "use it all up" within a certain RPM limit.
Advancing the cam generally works well when you've got plenty of port, adequate cam and compression but you're wanting to "use it all up" within a certain RPM limit.
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 06/13/11 11:21 PM
Any info on the current design? I just installed the current .590 to try out and installed it on a 102. Will keep ya posted on what it likes.
Mine is just an older version,with more lift.The valve opening/closing seat to seat and @.050 events are the same. I had it in at 101.5(aiming for 102) and it lost power across the entire range. I retarded it to 105 currently,and it is down a little but not nearly as bad,104 is the clear winner on mine.
Keith
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 06/14/11 04:09 PM
I actually considered advancing the cam because I have a little close ex valve/piston clearance, but I didnīt do it because I thought it would cost me power.
Hereīs another pic with the fuel system and air cleaners. A bit tall for a street motor?
Hereīs another pic with the fuel system and air cleaners. A bit tall for a street motor?
Posted By: Brian Hafliger
Re: SB Edelbrock LA heads 304cfm@.600" - 06/14/11 06:11 PM
Looks good!
Posted By: S/ST 3040
Re: SB Edelbrock LA heads 304cfm@.600" - 07/21/11 09:45 PM
Quote:
Itīs a 408 pump gas street engine with 10.7:1 CR, MP .590" flat tappet cam and 1.6 rockers
Any 1/4 mile hits with this thing yet?
Posted By: fishy340
Re: SB Edelbrock LA heads 304cfm@.600" - 07/21/11 11:36 PM
Quote:i agree very sharp looking motor,the customer is gonna very pleased with the power also..sweet BrianQuote:very nice
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 07/22/11 06:00 AM
Quote:Quote:
Itīs a 408 pump gas street engine with 10.7:1 CR, MP .590" flat tappet cam and 1.6 rockers
Any 1/4 mile hits with this thing yet?
I have a race tomorrow at a decent track, Iīll report as soon as I get back.
Posted By: mopster
Re: SB Edelbrock LA heads 304cfm@.600" - 08/02/11 10:40 PM
Ok, it ran 10.8 / 125mph. Itīs a 3300lbs street car with 727, dana60, 10" converter and no transbrake.
It was a very hot day, and also I didnīt get my 60ft times quite in the right zone since I only had chance to run four runs. All things considered I still think it was 1-2 tenths slower than I expected.
It was a very hot day, and also I didnīt get my 60ft times quite in the right zone since I only had chance to run four runs. All things considered I still think it was 1-2 tenths slower than I expected.
Posted By: Dunnuck Racing
Re: SB Edelbrock LA heads 304cfm@.600" - 08/02/11 11:47 PM
Don't feel bad,mine is slower than I would expect it to be too.
They never do what we would think they should and you still will find some e.t. with tuning I would bet.
Keith
They never do what we would think they should and you still will find some e.t. with tuning I would bet.
Keith
Posted By: ptowntsi
Re: SB Edelbrock LA heads 304cfm@.600" - 08/08/11 04:54 AM
Quote:
That engine with those heads made 621HP this morning on pump gas. TQ was 541. Roller cam, 10.9:1, 1050, TTI 1 7/8 x 3.5" header.
just saw this in my car craft that came yesterday. very nice!