Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469427
03/20/18 10:54 PM
03/20/18 10:54 PM
|
Joined: Nov 2006
Posts: 1,074 Manitoba Canada
67autocross
super stock
|
super stock
Joined: Nov 2006
Posts: 1,074
Manitoba Canada
|
9s in the 1/8 mile or the 1/4?
A new iron curtain drawn across the 49th parallel
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469450
03/20/18 11:44 PM
03/20/18 11:44 PM
|
Joined: Oct 2008
Posts: 1,176 East Coast
A/MP
OP
super stock
|
OP
super stock
Joined: Oct 2008
Posts: 1,176
East Coast
|
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469474
03/21/18 12:25 AM
03/21/18 12:25 AM
|
Joined: Oct 2008
Posts: 1,176 East Coast
A/MP
OP
super stock
|
OP
super stock
Joined: Oct 2008
Posts: 1,176
East Coast
|
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: jwb123]
#2469477
03/21/18 12:28 AM
03/21/18 12:28 AM
|
Joined: Sep 2014
Posts: 4,457 Washington
madscientist
master
|
master
Joined: Sep 2014
Posts: 4,457
Washington
|
It takes approx 725Hp to make a 3400lb car go 9.90, a stock block just won't take that kind of power, for any length of time. see the above post. My math says 650 HP to go 9.90 in a 3400lb car
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: madscientist]
#2469479
03/21/18 12:29 AM
03/21/18 12:29 AM
|
Joined: Aug 2003
Posts: 1,314 Charlotte, NC
LSP
pro stock
|
pro stock
Joined: Aug 2003
Posts: 1,314
Charlotte, NC
|
It takes approx 725Hp to make a 3400lb car go 9.90, a stock block just won't take that kind of power, for any length of time. see the above post. My math says 650 HP to go 9.90 in a 3400lb car Your math is closer.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: LSP]
#2469482
03/21/18 12:36 AM
03/21/18 12:36 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
Absolutely I could do it with a 360 of you consider a 610 roller a small cam. I do.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469487
03/21/18 12:42 AM
03/21/18 12:42 AM
|
Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
|
master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
|
Define "Big HP" Define "Small cam" Define "Reasonable heads" Define "Dependable" Define "Lower Maintenance" Define "Into the Nines"
All these things mean different things to different people.
My old Edelbrock RPM headed 440 had the old NF-69 Ultradyne .640 lift solid, Isky ductile rockers, Ross 11.5 pistons. To some that's a small cam, to others it may be huge. It went one 9.96, and one 9.98 in my 2950lb Challenger, so you could say it went "into the nines", but I've got 600 time slips between 10.02 and 10.45.
"Dependable"? In 6 years of racing, every failure was directly attributable to my penchant to occasionally hit it with 275-475 horses worth of spray. The Isky ductiles never moved, and I only ran the valves three times in those six seasons.
"Lower maintenance"? Oil change every 75 passes, a set of plugs once a season. Keeping the air bleeds blown out on the dominator was more effort than anything else.
I'm going to say this as simply as I can. Every single stock stroke 440 block that has been broken at this horsepower level, has been broken by detonation, not because it was making too much power. Period. End of story. But racers prefer to blame the parts than own up to the fact that their tune-up was off. Not saying it wasn't a great tune-up on that cold day in October with mine shaft air and c-12 in the tank, but when you drag it back out in may and the DA is three thousand foot higher, and all you could grab was av-gas...you better back it off some.
If I was starting fresh right now with a stock stroke 440, I think I'd do the Trick Flow 240's a mid 650 lift solid, with another pair of isky ductile rockers, and keep the compression around 11 to 1. It wouldn't run 9s all year long at 3000lb pounds, but it would do it in cool air.
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: jwb123]
#2469488
03/21/18 12:43 AM
03/21/18 12:43 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
It takes approx 725Hp to make a 3400lb car go 9.90, a stock block just won't take that kind of power, for any length of time. see the above post. He said a 3000 pound car guys
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469494
03/21/18 12:54 AM
03/21/18 12:54 AM
|
Joined: Jan 2008
Posts: 2,363 Cotati, CA
Dave Hall
top fuel
|
top fuel
Joined: Jan 2008
Posts: 2,363
Cotati, CA
|
Are you asking me? When I owned the engine it had this one. It still lives in my Dart street car! The guy I bought it from had something larger. It was some oddball thing I sold long ago.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469498
03/21/18 01:06 AM
03/21/18 01:06 AM
|
Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
|
master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
|
Using stock production block, no stroker kit, no power adders, a reasonable set of head and a relatively true Mopar, can good HP be made with either SB or BB to move a 3000 lbs car into the 9's and be a dependable lower maintenance car? Sure a MP purple .590 440 around 10.9 comp with a 4500 stall vert @ 3000#, no problem. SB, a lot tougher, most likely not.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: Sport440]
#2469510
03/21/18 01:30 AM
03/21/18 01:30 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
You are adding to many rules but I will say yes I can with Edelbrock heads
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469515
03/21/18 01:39 AM
03/21/18 01:39 AM
|
Joined: Jan 2003
Posts: 4,448 Phoenix, AZ
MoparBilly
master
|
master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
|
My small block is .600 lift with crane golds, beehive springs and is street reliable.
As reliable as the .630-.650 lift solids we've been running in our big blocks have been, I'll likely never go smaller again.
Nines in the dog days of summer requires 9.60 capability in mine shaft conditions.
My Dad's Challenger is an old school example, but it had parts that made it a little more difficult than it has to be now.
Stock stroke 440, Indy SR heads with 1.5 crane golds (non-offset) Indy intake 10.50 dominator. 2 1/8 headers (likely too big) and the Hughes STL6872. We ported the roofs of the SR heads to match the max wedge intake, but left the width alone. The car had a 2.03 low gear set glide, and a 5200 stall converter. With a 4.56 gear and 29.5-11.5 slicks, it was animal, running 9.60-9.70 in the 137 range.
Alas Dad wanted low tens, and a car that didn't move around on the track, so we put in 4.10's and 14X32 slicks. He was happy, his four sons...not so much. That motor would absolutely come alive from 6400 to 7200...fun stuff. Memory serves, with Dad aboard that car was around 2850 though.
![Name: 100_1932 - Copy.jpg
Views: 1172
Size: 395.66 KB
ID: 319275 100_1932 - Copy.jpg](/ubbthreads/ubbthreads.php/ubb/download/Number/319275/filename/100_1932 - Copy.jpg) ![Name: 100_1942.jpg
Views: 1134
Size: 502.49 KB
ID: 319276 100_1942.jpg](/ubbthreads/ubbthreads.php/ubb/download/Number/319276/filename/100_1942.jpg)
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2469886
03/21/18 07:03 PM
03/21/18 07:03 PM
|
Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
|
Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
|
About 600-650 HP to do the job. Factory SB or BB not up to the task? I think this is why I'm looking to run the number w/o beating the motor up. John, wasn't your son running 10.00 with a stock 360 block and your magical heads? What do you have now, what are you hoping to reuse, and what's your budget?
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470121
03/21/18 11:38 PM
03/21/18 11:38 PM
|
Joined: May 2015
Posts: 1,134 Lost in Time
Iowan
super stock
|
super stock
Joined: May 2015
Posts: 1,134
Lost in Time
|
What do you call a small cam because I have a 440 with a mopar 557 cam and I think its small, another with 274 and 282 @.50 duration and .590/603 lift and I think it's a street strip cam.
So just what is a small cam.
Have a great day Iowan
"obsolete is neat"
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470143
03/22/18 12:32 AM
03/22/18 12:32 AM
|
Joined: Nov 2003
Posts: 5,160 Texas
dannysbee
master
|
master
Joined: Nov 2003
Posts: 5,160
Texas
|
440 .060 over Ross domed Pistons, unported edelbrocks, crane golds, comp .650 McCandless grind, 950 Holley, m1 intake, 2" headers. 3150 lbs 8" converter, SS springs, 4.56 gear. 10 teens at 132- 133 in 93-95 degree summer heat. Do a low block 470, port the heads and intake. With a 3000 lbs car I believe you would be well into the 9's. The 60 fits were 1.38-1.40.
Getting old just means you were smarter than some and luckier than others.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: dannysbee]
#2470154
03/22/18 12:42 AM
03/22/18 12:42 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
Cams to big. Lol. He added silly rules after starting the post. 590 max lift. I guess he's afraid he might have to set the valves twice a year.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: Dduster]
#2470166
03/22/18 12:55 AM
03/22/18 12:55 AM
|
Joined: Jan 2008
Posts: 2,363 Cotati, CA
Dave Hall
top fuel
|
top fuel
Joined: Jan 2008
Posts: 2,363
Cotati, CA
|
I bought my first 440 "race" engine from a guy running Super Gas with it at 145 plus. Ported iron heads, stock block, stroke, etc. My Challenger was a bit (4-500pds.???) heavier than his Daytona and I ran a smaller cam but would run 10.0's at 135-137. I still have the oil pump and hand grinded upon Harland Sharp roller rockers from it. Sold the epoxied, cracked, etc. cyl. heads. This thankfully happened on the starting line after a .001 light... Dave,... that is an impressive photo for how to break a crankshaft!! ![eek eek](/ubbthreads/images/graemlins/custom/eek.gif) I didn't think anyone could break one into that many pieces. I'm saving a copy of the photo for inspiration. Good Job That all stayed together believe it or not...Didn't come apart until I unbolted it. There is actually some blood drops on the pieces as the sumbith cut me while getting it apart. Part of it was wedged pretty good. It wasn't even loud, it just quit. The loudest, crappiest, scariest thing was shearing the ring gear! ![eek eek](/ubbthreads/images/graemlins/custom/eek.gif) I thought the whole car blew up like a BOMB! ![nervous nervous](/ubbthreads/images/graemlins/custom/nervous.gif)
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470273
03/22/18 10:54 AM
03/22/18 10:54 AM
|
Joined: Jan 2003
Posts: 10,035 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,035
Frostbitefalls MN (Rocky&Bullw...
|
If you are willing to allow a stroker in a 440 block, since the investment in a new crank is important, it should be doable with a hydraulic cam! I built a 4inch stroke 440 ,475 cubes, .540 lift, 268 @ .050 hyd cam, 750 alky carb, 12/1 compression, 440-c bowlported heads on methanol that went 10.10 at 3180 lbs. Fix all that was wrong with that combo, like go bigger carb, 1.6 rockers, more cubes, and it would do the job, and not have to rev over 6200 rpm. I was shifting mine at 5800 to 6,000.
Last edited by gregsdart; 03/22/18 10:55 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: Cab_Burge]
#2470430
03/22/18 03:25 PM
03/22/18 03:25 PM
|
Joined: Jan 2003
Posts: 580 Livermore, CA
Dduster
mopar
|
mopar
Joined: Jan 2003
Posts: 580
Livermore, CA
|
Wait until you break the rear drive shaft yoke in high gear above 6500 RPM, that has been my worse race car experience so far ![puke puke](/ubbthreads/images/graemlins/custom/puke.gif) I had to tighten almost every fastener in that car, every one Hey Cab,.. bet that experience was pretty high on the 'Pucker Factor' as well correct? ![eek eek](/ubbthreads/images/graemlins/custom/eek.gif) I have a friend who broke the rear ring gear (probably like D Hall's experience) and It scared Him pretty good!
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: qwkmopardan]
#2470792
03/23/18 01:36 AM
03/23/18 01:36 AM
|
Joined: Oct 2008
Posts: 1,176 East Coast
A/MP
OP
super stock
|
OP
super stock
Joined: Oct 2008
Posts: 1,176
East Coast
|
3000lb demon. 360/418--587 cast iron heads, home ported--.590 Racer brown solid flat tappet-- STX-22--13 to1 CR--timing set at 28*--crank trigger--9.68 at 136mph--1.260 best 60 ft, probably better but tripped the 60ft. timers with rear tires often. 2600+ passes and counting. Went as many as 4 years without pulling a valve cover off. Pistons and crank never out of block since day1. Dropped a valve in late 2017 but short block survived with only a minor gouge out of cylinder wall. Put a lesser set of heads on it to finish the season, raced it the next night, and still ran some low 6.20s 1/8th mile. Now this gets to the heart of my post. I had found several SB builds but none have achieved this kind of performance with a cam under a .600 roller.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470798
03/23/18 01:53 AM
03/23/18 01:53 AM
|
Joined: Oct 2015
Posts: 570 UK
rb446
mopar
|
mopar
Joined: Oct 2015
Posts: 570
UK
|
Yes, my mates 3150lbs Dart>
440ci, Eddy MCH 320cfm heads 12.7:1CR, DC.590 SFT purple, stock iron adj rockers Victor Intake, 1050 Dom. 2" hdrs, 727, made an on track 599 flyhp. Hemi pick-up 5000 stall, 4.56/13x31's, SS springs good dble adj shocks. ran 10.10's, take off 150lbs = 9's. Hardly ever touched it.
Last edited by rb446; 03/23/18 02:00 AM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470799
03/23/18 02:00 AM
03/23/18 02:00 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
[quote=qwkmopardan]3000lb demon. 360/418--587 cast iron heads, home ported--.590 Racer brown solid flat tappet-- STX-22--13 to1 CR--timing set at 28*--crank trigger--9.68 at 136mph--1.260 best 60 ft, probably better but tripped the 60ft. timers with rear tires often. 2600+ passes and counting. Went as many as 4 years without pulling a valve cover off. Pistons and crank never out of block since day1. Dropped a valve in late 2017 but short block survived with only a minor gouge out of cylinder wall. Put a lesser set of heads on it to finish the season, raced it the next night, and still ran some low 6.20s 1/8th mile. Now this gets to the heart of my post. I had found several SB builds but none have achieved this kind of performance with a cam under a .600 roller. [/quote Lots of ways to get the same results. That combo was a high compression stroker. Pick your poison
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470974
03/23/18 02:57 PM
03/23/18 02:57 PM
|
Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
|
What seems like a big cam in one engine is not really big in another, my 410 SB in my dakota seems pretty big to me at 221@.050 .575 lift, has nice rumble at idle, then on the other hand I have a similar cam in a 5.7 hemi and the engine barely quivers at idle and you would never guess it had a cam that size in it, the thing idles almost like stock. It don't make any sense to me as the 410 has more compression, more cubes, a lot more velocity in the ports... it runs incredible but the cam is much more noticable in there.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2470993
03/23/18 03:40 PM
03/23/18 03:40 PM
|
Joined: Oct 2015
Posts: 570 UK
rb446
mopar
|
mopar
Joined: Oct 2015
Posts: 570
UK
|
I ran the CC .650" 290@.050 sft in my stock 440SP motor, didn't class that as big at all, it ticked over at 900rpm, sweet as, even without the CR it really needed,
Car was 3000lbs race weight, ran a best of 11.2@118 with stock 906 heads.
Added a pair of 2.14/1.81 mildly ported 906's, (probably 255cfm) went 10.7@125 which would've gone 10.5's with more air in slicks, and a few tweeks, was in 1990 and knowledge wasn't what it is today.
So working on that gain from stock 215>220cfm 906's > to BV 255cfm 906's = .5/sec gain, what would it run today with a pair of Trickflow 240's, (328@.650) 10.0's?...the cam/converter/gears/tyres were there for it....just theorizing....would love to get that back and run it today with the 240's to see, and all this from a stock balanced s-pack bottom end, a crappy Team G, small 850DP and just 10:1CR....anyone reckon I could've got into the 10.0's?
Last edited by rb446; 03/23/18 03:55 PM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: rb446]
#2471026
03/23/18 04:52 PM
03/23/18 04:52 PM
|
Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
|
I ran the CC .650" 290@.050 sft in my stock 440SP motor, didn't class that as big at all, it ticked over at 900rpm, sweet as, even without the CR it really needed,
Car was 3000lbs race weight, ran a best of 11.2@118 with stock 906 heads.
Added a pair of 2.14/1.81 mildly ported 906's, (probably 255cfm) went 10.7@125 which would've gone 10.5's with more air in slicks, and a few tweeks, was in 1990 and knowledge wasn't what it is today.
So working on that gain from stock 215>220cfm 906's > to BV 255cfm 906's = .5/sec gain, what would it run today with a pair of Trickflow 240's, (328@.650) 10.0's?...the cam/converter/gears/tyres were there for it....just theorizing....would love to get that back and run it today with the 240's to see, and all this from a stock balanced s-pack bottom end, a crappy Team G, small 850DP and just 10:1CR....anyone reckon I could've got into the 10.0's? So if thats not big what is your definition of big?
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: HotRodDave]
#2471045
03/23/18 06:01 PM
03/23/18 06:01 PM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
So if thats not big what is your definition of big?
Some of you guys should have raced with us in the 70's and 80's and you would get a better understanding of how you have to work with JUNK or within the rules. my Duster ran 9.82 back then at 2950 weight with a .030 over 440 block, 906 heads, stock crank, stock rods, TRW heavy weight pistons, and super stock springs. To get there I used a tunnel ram with two 750 holleys and a 750 lift cam. So with today's way better chassis, tires, HEADS, intakes, cams, and pistons it would be a "cakewalk". A 650 lift cam is not big.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: pittsburghracer]
#2471124
03/23/18 09:13 PM
03/23/18 09:13 PM
|
Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
|
the .650 dont seem big to me, it was the 290@.050 thats big
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: pittsburghracer]
#2471361
03/24/18 03:00 PM
03/24/18 03:00 PM
|
Joined: Oct 2015
Posts: 570 UK
rb446
mopar
|
mopar
Joined: Oct 2015
Posts: 570
UK
|
So if thats not big what is your definition of big?
Some of you guys should have raced with us in the 70's and 80's and you would get a better understanding of how you have to work with JUNK or within the rules. my Duster ran 9.82 back then at 2950 weight with a .030 over 440 block, 906 heads, stock crank, stock rods, TRW heavy weight pistons, and super stock springs. To get there I used a tunnel ram with two 750 holleys and a 750 lift cam. So with today's way better chassis, tires, HEADS, intakes, cams, and pistons it would be a "cakewalk". A 650 lift cam is not big. ![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif) ....exactly. We had about 6 Koffel iron 451's over here in cars at £5000 a pop in the 80's, they had max ported heads, ultra thin rings and .750 roller cams, they managed 10.0's in most of the cars that were lucky enough to afford to run them. The MP .590 with 271@.050 is a good cam but its done in most race 440's at around 6500ish with Good modern heads, if you wanna run in the 9's@3000lbs+ you gotta turn one more than that unless your light. My junk 440 with junk 906's was still pulling like crazy at 6700 in the traps with 290@.050
Last edited by rb446; 03/24/18 03:18 PM.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: rb446]
#2471393
03/24/18 04:21 PM
03/24/18 04:21 PM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
I got one heck of a laugh years ago (1980's). While I was laid off from the steel mill I picked up a job at a local transmission shop pulling and replacing transmissions to stay out of the bars every night. This place was owned and operated by several dirt track racers so "dirt track" books were laying around. I picked one up and it was discussing camshafts and how they work. Towards the end of the article it touched on drag racing. The author wrote " I don't know how these drag racing machines even start with these BIG, sometimes up to .750 lift even start. LOL. Boy he should see what we are running now.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: gregsdart]
#2471592
03/24/18 11:21 PM
03/24/18 11:21 PM
|
Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
|
master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
|
What is the original posters' version of small? .590 flat tappet, 3000# sb or bb
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: pittsburghracer]
#2472414
03/26/18 06:08 PM
03/26/18 06:08 PM
|
Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
|
Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
|
... The author wrote " I don't know how these drag racing machines even start with these BIG, sometimes up to .750 lift even start. LOL. Boy he should see what we are running now. In one of the old Smokey Yunick books I have, he commented on how he didn't know how drag racing valve trains even held up given the extra lift and spring loads they used compared to the roundy-round engines he specialized in. I think at that time a .600"-ish SFT cam was probably typical for his stuff, so a more aggressive solid roller with .750" lift and 600#s open pressure would have seemed... "different", for sure.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2472675
03/27/18 11:04 AM
03/27/18 11:04 AM
|
Joined: Oct 2007
Posts: 4,213 New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,213
New York
|
From Vizard: 1. huge rocker ratio 2. tiny LSA 3. shorten duration
Boffin Emeritus
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: polyspheric]
#2472848
03/27/18 04:59 PM
03/27/18 04:59 PM
|
Joined: Jan 2005
Posts: 12,424 Kalispell Mt.
HotRodDave
I Live Here
|
I Live Here
Joined: Jan 2005
Posts: 12,424
Kalispell Mt.
|
From Vizard: 1. huge rocker ratio 2. tiny LSA 3. shorten duration I like the way he thinks
I am not causing global warming, I am just trying to hold off a impending Ice Age!
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2472871
03/27/18 05:45 PM
03/27/18 05:45 PM
|
Joined: Oct 2007
Posts: 4,213 New York
polyspheric
master
|
master
Joined: Oct 2007
Posts: 4,213
New York
|
On his BBC mule engines, this had the effect of increasing torque all over, needing less valve spring, and making the same max power at lower RPM with better idle quality and part-throttle manners. His opinion is that you HAVE to initiate intake flow ASAP or the rest of the intake cycle is playing catch-up, so big OL + 1.9:1 rockers get the valve open around TDC really quick & far.
Boffin Emeritus
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2475523
04/01/18 07:16 PM
04/01/18 07:16 PM
|
Joined: Aug 2007
Posts: 498 El Dorado Ca
65signet
mopar
|
mopar
Joined: Aug 2007
Posts: 498
El Dorado Ca
|
I have seen a 383 with AVS carb runs 9s in a 1969 Cuda, just look at Super Stock, lots of iron heads and small cams going fast.
1965 Plymouth Barracuda 273 M/SA 1970 Plymouth Duster 360/904 10.60s with J heads
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2475698
04/02/18 12:12 AM
04/02/18 12:12 AM
|
Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
|
master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
|
Back in the early 2000, SS cars were running .750+ lifts. I doubt that have gotten smaller. Ok, and that would be a Big cam, not a small cam. But your def was .590 or below, that's even a big cam by most. ???
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: A/MP]
#2475755
04/02/18 01:03 AM
04/02/18 01:03 AM
|
Joined: Jan 2003
Posts: 10,035 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,035
Frostbitefalls MN (Rocky&Bullw...
|
One mag article reported Paul Rossi's 440 ss motor was using a .750 lift roller, and .035 lash, which would be more in line with Vizards methods.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: gregsdart]
#2475761
04/02/18 01:09 AM
04/02/18 01:09 AM
|
Joined: Jan 2003
Posts: 4,769 Moved to N.E. Tennessee
GomangoCuda
master
|
master
Joined: Jan 2003
Posts: 4,769
Moved to N.E. Tennessee
|
Back in the early 2000, SS cars were running .750+ lifts. I doubt that have gotten smaller One mag article reported Paul Rossi's 440 ss motor was using a .750 lift roller, and .035 lash, which would be more in line with Vizards methods. Crane R286 .750 lift roller was the baseline 440 Superstock cam in the late 70's.
Last edited by GomangoCuda; 04/02/18 01:16 AM.
In theory, there is no difference between theory and practice. In practice, there is.
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: GomangoCuda]
#2475794
04/02/18 01:22 AM
04/02/18 01:22 AM
|
Joined: Aug 2003
Posts: 43,355 Bend,OR USA
Cab_Burge
I Win
|
I Win
Joined: Aug 2003
Posts: 43,355
Bend,OR USA
|
Back in the early 2000, SS cars were running .750+ lifts. I doubt that have gotten smaller One mag article reported Paul Rossi's 440 ss motor was using a .750 lift roller, and .035 lash, which would be more in line with Vizards methods. Crane R286 .750 lift roller was the baseline 440 Superstock cam in the late 70's. ![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif) Mark Heffington owner and designer of Cam Dynamics made that lift possible with his lobe designs, no one else could make the valve heads stay on the valves back then with that much lift ![shruggy shruggy](/ubbthreads/images/graemlins/custom/shruggy.gif) Hence Harvey Crane buying out the completion to get his technology
Last edited by Cab_Burge; 04/02/18 01:23 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
|
|
|
Re: CAN YOU MAKE BIG HP WITH A SMALL CAM
[Re: GomangoCuda]
#2475804
04/02/18 01:27 AM
04/02/18 01:27 AM
|
Joined: Feb 2005
Posts: 20,204 PA.
pittsburghracer
"Little"John
|
"Little"John
Joined: Feb 2005
Posts: 20,204
PA.
|
Back in the early 2000, SS cars were running .750+ lifts. I doubt that have gotten smaller One mag article reported Paul Rossi's 440 ss motor was using a .750 lift roller, and .035 lash, which would be more in line with Vizards methods. Crane R286 .750 lift roller was the baseline 440 Superstock cam in the late 70's. I still have 3 of those cams on my shelf in different centerlines. Lol
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
|
|
|
|
|