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N/A cam for my engine to run N/A

Posted By: Clanton

N/A cam for my engine to run N/A - 07/29/14 01:57 PM

My Victors flow 350 at .600,10.5 cr 446" 3.75 stroke,6800 rpm.I know my gearing is not correct or my convertor but wehen looking at alternatives you have to start somewhere.THX!
PS:I want a roller cam.
Posted By: hemi-itis

Re: N/A cam for my engine to run N/A - 07/29/14 02:25 PM

Mike,are you taking the blower off????????????????????
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 02:59 PM

Not for good just a change of pace.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 03:31 PM

I think I may be able to advance my cam and use it but I don't know.OI have been told it is like an old Super stock cam but like I said I have no idea.
.646 int .631 exh
at .050 260 int 269 exh
at .020 291 int 306 exh
int open 21 close at 59
exh open 69 close at 19
112 LSA
Posted By: Thumperdart

Re: N/A cam for my engine to run N/A - 07/29/14 04:07 PM

Where do the heads peak at? This is one of the reasons I love n/a............WAY easier for my dumb azz to go fairly fast and still beat power adder cars.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 04:12 PM

I went to boost cuz I could not build a N/A engine.
The heads peak at .650 at 355 cfm
Posted By: FastmOp

Re: N/A cam for my engine to run N/A - 07/29/14 04:58 PM

Comp makes a .680 thats a good cam!
Posted By: Thumperdart

Re: N/A cam for my engine to run N/A - 07/29/14 05:18 PM

Quote:

I went to boost cuz I could not build a N/A engine.
The heads peak at .650 at 355 cfm




My Isky gring could work although you`re a bit heavy.........
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 05:23 PM

Quote:

Comp makes a .680 thats a good cam!


I want to stay below .650 to stay away from any bind even tho I have about .200 at .650
Posted By: Thumperdart

Re: N/A cam for my engine to run N/A - 07/29/14 05:24 PM

The closer to coil bind the better.............
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 06:03 PM

Looking at comp cams page I think my cam is better with more lift shorter dur and 2* more LSA for avg hp.
Posted By: all spooled up

Re: N/A cam for my engine to run N/A - 07/29/14 06:13 PM

get a hold of Dwayne porter
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 06:18 PM

Quote:

get a hold of Dwayne porter


as much as I would like to pic his brain for info I don'r know if he has the time for someone with a not so serious build[not perfect].
Posted By: FastmOp

Re: N/A cam for my engine to run N/A - 07/29/14 06:23 PM

What's the best time slip look like on that Big Bad Blown B-Body?
Posted By: JohnRR

Re: N/A cam for my engine to run N/A - 07/29/14 06:26 PM

Quote:

Quote:

get a hold of Dwayne porter


as much as I would like to pic his brain for info I don'r know if he has the time for someone with a not so serious build[not perfect].



Sure he does , he helps me all the time
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/29/14 06:27 PM

Quote:

What's the best time slip look like on that Big Bad Blown B-Body?


6.50 109 mph in the 1/8 1.44 60'
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/30/14 01:31 PM

Quote:

I think I may be able to advance my cam and use it but I don't know.OI have been told it is like an old Super stock cam but like I said I have no idea.
.646 int .631 exh
at .050 260 int 269 exh
at .020 291 int 306 exh
int open 21 close at 59
exh open 69 close at 19
112 LSA



Any more help on my cam profile?I may run it on the dyno to brake in my new rings.I tried to look up a coouple of victor builds that I know were posted but I could not find them.
Posted By: tboomer

Re: N/A cam for my engine to run N/A - 07/30/14 01:36 PM

Good reading here Mike!!
https://board.moparts.org/ubbthreads/show...&PHPSESSID=
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/30/14 01:57 PM

Thanks,A lot of strokers in those builds.
Posted By: dvw

Re: N/A cam for my engine to run N/A - 07/31/14 03:15 AM

Why not check piston to valve clearance at 108* and try the cam you have? Get a baseline and go from there. Plenty of issues going on with your car. Start simple.
Doug
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 07/31/14 03:23 AM

The p to v was .200 int .300 exh at 112 isl
Posted By: Sport440

Re: N/A cam for my engine to run N/A - 07/31/14 05:36 AM

Yep, youve got lots of P/V clearence to play with ICL.

Your at 109 now, NA I would try 105 or so. Dont know if I would go much more then that because you may lose to much exhaust overlap ATDC for that scavenging effect that NA motors like with that cam, but that is purely speculative. But, please test away on the dyno for us.

Posted By: PorkyPig

Re: N/A cam for my engine to run N/A - 08/01/14 04:20 PM

Quote:

I think I may be able to advance my cam and use it but I don't know.OI have been told it is like an old Super stock cam but like I said I have no idea.
.646 int .631 exh
at .050 260 int 269 exh
at .020 291 int 306 exh
int open 21 close at 59
exh open 69 close at 19
112 LSA




Gear?
Converter?

Without any more info, my thought is a single pattern around the same intake duration you have now, but tightened up to a 106-107 LSA. Without the blower, the cam you have now is "bleeding out" the mid-range torque you need to get that heavy beast moving.
Posted By: B3422W5

Re: N/A cam for my engine to run N/A - 08/01/14 04:24 PM

Quote:

get a hold of Dwayne porter



Yep
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 08/01/14 04:43 PM

Quote:

Quote:

I think I may be able to advance my cam and use it but I don't know.OI have been told it is like an old Super stock cam but like I said I have no idea.
.646 int .631 exh
at .050 260 int 269 exh
at .020 291 int 306 exh
int open 21 close at 59
exh open 69 close at 19
112 LSA




Gear?
Converter?

Without any more info, my thought is a single pattern around the same intake duration you have now, but tightened up to a 106-107 LSA. Without the blower, the cam you have now is "bleeding out" the mid-range torque you need to get that heavy beast moving.


Thanks for you input!I have a 3.73 gear with a 28" tire I could use but not on there now.Do you meen put the cam in[ICL?] with the 112LSA at 106/107 or?I would think the 112 LSA would be better avg hp.I see your point on the exh dur for NA.The convertor is a 5500 with boost and would be maybe 5200 without 9.5"
Posted By: Sport440

Re: N/A cam for my engine to run N/A - 08/01/14 06:06 PM

If you were to use your current cam I would advance it to 105 or so. This cam is not ideal for your engine/car combo with out the blower IMO.

I also think you will want a tighter LSA of 106 to 108 Not the 112 LSA that you have in now at a 109 ICL
Posted By: PorkyPig

Re: N/A cam for my engine to run N/A - 08/01/14 09:51 PM

Quote:

Do you meen put the cam in[ICL?] with the 112LSA at 106/107 or?I would think the 112 LSA would be better avg hp.


Nope, I'm suggesting a new cam ground on 106-107 LSA installed on 102-103 ICL. You need to build some torque, and that blower came ain't the way to do it unless you stick the blower back on.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/25/14 05:11 PM

I ordered a victor 2954 intake and we will see what I can do N/A but I got it to start a parts collection to be N/A and go to some local car stuff.I have my 850 carb to put on.I will work on a cam in due time.
Posted By: FastmOp

Re: N/A cam for my engine to run N/A - 11/25/14 07:38 PM

It's going to be hard to run faster then a 6.50 with your combo of parts. The small cubic inches, low stall, and shallow gears are all fighting against a low ET.
I'd change the stall 1st. It will prolly be a better ET gain then a cam. If your stuck on a cam change only I don't think there's a lot to be gained and still keep the lift where you want it.

Can I borrow the blower stuff for a summer?
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/25/14 08:10 PM

Quote:

It's going to be hard to run faster then a 6.50 with your combo of parts. The small cubic inches, low stall, and shallow gears are all fighting against a low ET.
I'd change the stall 1st. It will prolly be a better ET gain then a cam. If your stuck on a cam change only I don't think there's a lot to be gained and still keep the lift where you want it.

Can I borrow the blower stuff for a summer?


MMMMMMaybe for 1 race but not the summer. I will get more N/A parts over time be it a vert or cam.I may do a swap at the track from n/a to boost may be fun or the other way.
Posted By: DusterDave

Re: N/A cam for my engine to run N/A - 11/25/14 08:59 PM

What is your static compression ratio?
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/25/14 09:09 PM

10.5cr
Posted By: 71Pan

Re: N/A cam for my engine to run N/A - 11/26/14 06:50 AM

Hey if you are interested I have a comp 308r magnum roller I would sell. .262 @ .050 both sides 110 lsa .575 lift with 1.5 rockers. I think this cam would work well with your combo
Posted By: gregsdart

Re: N/A cam for my engine to run N/A - 11/26/14 08:22 AM

Going with a roller cam requires upgrading the entire valve train if you are going to reap most of the benefits. How good are your rockers? pushrods will need to change due to lifter height change. Valve springs will need to be plenty stout, somewhere in the 250+ lbs on the seat, maybe more depending on lobe. It sounds like your combo will want something in the neighborhood of 270 to 275 degrees at .050, probably on a 108 CL or less. The closer you can get to a gross lift of .700 the better. If you have a gross lift of .700 your true max lift will be .700 minus lash (.028?) and also minus compression of parts(.010?) for a total of about .662 net lift, which is just barely above your heads peak flow.
The two things that stand out to me here are your compression, which is fairly low and why I picked the duration and lsa, and stall in the converter. To make this car fly it will be best at or above 5,000 minimum, and closer to 6,000 wouldn't hurt a bit.
If you decide you are willing to stay normally aspirated, then you can cut the heads for more compression and go up in duration to match. It will take a little figuring to see how far you can go with that, but a sharp engine builder can help you out in picking the cam and final compression so you can put the cam where it will be happiest.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/26/14 03:51 PM

I have a full roller in now,HS rockers,Manton best 3/8 push rods,Pac springs at 280# seat/680# open.The N/A is really for driving on the street to a car show so a perfect combo is not a must have.I may choose to stay N/A later and will try to get parts for that goal.I think my vert will stay over 5K rpm and is 5500 now[9.5" PTC steel stater]
Posted By: Thumperdart

Re: N/A cam for my engine to run N/A - 11/26/14 05:18 PM

Quote:

I have a full roller in now,HS rockers,Manton best 3/8 push rods,Pac springs at 280# seat/680# open.The N/A is really for driving on the street to a car show so a perfect combo is not a must have.I may choose to stay N/A later and will try to get parts for that goal.I think my vert will stay over 5K rpm and is 5500 now[9.5" PTC steel stater]




I agree w/Greg. Here`s my cam;

Isky solid roller .680-.660 lift 276-281 @ .050 108 lsa installed at about 104-105. Been in the 9`s w/as little as 210 lbs. on the seat and the lobes are gentle enuff to drive for miles. I can hook you up w/Rod at Isky if you`d like.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/26/14 05:45 PM

Thanks for the input!The duration of your cam sounds like a lot,I would get a cam about .600 lift after I test with the cam I have.
Posted By: Thumperdart

Re: N/A cam for my engine to run N/A - 11/26/14 06:28 PM

My duration is a bit much for you but they can hook you up and fwiw almost 8 years on a roller w/one roller rebuild for $ 200.00. I`d go w/as much lift/duration as you need based on head flow and intended rpm range myself. .
Posted By: Cab_Burge

Re: N/A cam for my engine to run N/A - 11/26/14 07:10 PM

The smaller C.I. motors are a little more sensitive to the cam duration. On your deal, especially for the street, I would look at a cam with 255 to maybe 272 duration at .050 and as much lobe lift I could get. Have it ground on 106 to 108 LSA and install it between 102 and 104, depending on the LSA, and let it eat.I always go back to something Joe Alread told me a long time ago, his deal was to work on the fisrt 100 ft. of the track, he said the rest of the track will take care of itself as long as the car leaves hard. I keep that in mind when selecting camshafts, the closer LSA will help the car move a lot harder the first foot than a wider LSA will Been there, done that Let the cam overlap help fill the cylinders, hence Iskys Fifth Cycle advertising back in the day IHTHS BTW, I had one cam that was accidently ground on a 101 LSA, installed at 99 ILC. That cam ended up making the customer very happy, more happy than the other cam that was ground on 110 and installed at 106 intake lobe center
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/26/14 07:38 PM

I just got the intake at the door and it looks like I will do some port matching to Koffels porting but it is just a std port opening.I am going to polish the outside of the intake this winter.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/27/14 06:13 PM

On my dynosim the cam looks not too bad without boost.
Posted By: Clanton

Re: N/A cam for my engine to run N/A - 11/30/14 10:22 PM

I test fit the intake for port match so maybe a little plenum and a port cleanup and I can bolt on my 850 I used with the blower.
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