89vette

I'm interested in what cam your running. I have a Comp Magnum custom grind with 220/229 duration ..544/.548 lift. Car has 363 HP and 434 TQ to the wheels (6 speed). Looking to increase the upper end breathing and therefore increase HP above 5000.

Thanks,
Jason

89gta383

iTrader: (5)

I ran the LPE219 when I had the superram. Now have comp custom 230-236 .604-.608 with 1.6 rockers on a 114 with LT1 intake.

Have you ever seen the shootouts in High Performance Pontiac? Cartek usually has one superram car there, and they always run a comp 230-230 .560 lift cam on a 110 from the comp catalog. Morgan Motorsports also uses the 230, but with .600 lift on a 110.
Cartek's cams ain't cheap though, like $400. Call them and ask about the cam that Julio ran in his superram 406 that ran 10.60's years ago, that cam was like 232-242 .602 .602 on a 112 lsa. The 10 degrees more intake duration will increase hp peak 1000 rpm over your current cam. I think the rule of thumb is every 5 degrees duration = 500 rpm, but can't be sure, it may be every 10 degrees?

89gta383

iTrader: (5)

NOSFEDGTA

When I had my 383 with a super ram I ran the comp cam extreme energy.

.224--.230 exh
.530-.544 lift with 1.6 rr

10.3:1 compression

it made 347 rwhp and 497ftlbs at the tires.....

Drew

88BlackZ-51

iTrader: (2)

Did u change the cam in the 396?

89vette

Whoa! Nothing like bumping a 4 year old post! Actually it is hard to believe that it was 4 years ago I was looking to change cams. I actually did change cams. I installed a cam with a reverse split duration. 230 deg intake, 224 exhaust/.565"-.510" lift 114 lsa. The intake has a much more aggressive lobe than the exhaust. When I went from my old can this cam, the car layed down badly at about 5000. The car was so rich it was choking on fuel. I kept pulling out fuel until I had the AFR I wanted. I never did figure out why it wanted less fuel up top. I also shortened the Super Ram runners by welding up the outsides and removing the divider 1.5" down. It revs freely to6500 but I never had it dynoed again. I did take it to the track and it ran a 12.5 at 116 with a 2.1 60' time (I can't launch a 6 speed correcly with all that torque). Anyway, the motor still runs fantastic but it burns about a quart of oil every 200 miles. I plan on rebuilding it this winter and I want to but a set of the new AFR 195 eliminator heads with a comp port and a bigger cam. Possibly a TPIS solid roller.

MikeH

iTrader: (10)

What were your times before you siamesed the runners?

88BlackZ-51

iTrader: (2)

o.k. cool.

was that 430rwhp? i plan on a 396 or 406 SR motor. trying to find what workds and what doesnt when it comes to cam/intake.

89vette

I did not run the car at the track prior to that nor did I dyno the car after the new cam and siamesed runners. I have pictures of the runners after welding and porting but I do not have a way to post them. I could e-mail them to you if you have a way. They came out really nice. I would "expect" from the way the car drives that the peak power moved up 500 to 750 rpm.
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No I wish. I would love to have 430 rwhp because that would mean 500 at the crank. My car dynoed 363HP and 434TQ at the wheels. Since it is 6 speed, I used 15% loss and divided those numbers by .85 to get 430HP and 510 TQ at the wheels. With a better set of heads and much bigger cam, I hope to get 400-420 HP to the wheels. The cam I have now idles pretty much like a stock cam.

88BlackZ-51

iTrader: (2)

which exhaust do you have? and what head/cam do u think will get u that extra 45 rwhp?

89vette

Currently I have TPIS 1 3/4" longtubes with 3" bullet cats attached to the ends. From there it flows into a stainless Corsa Catback exhaust.

I'm looking to have my 195 heads ported or to possibly get a set of the new AFR 195 eliminator heads with a comp port. They are supposed to be the best flowing 195cc head out there. Most likely I'll just port my exsisting heads since they are in good shape. The cam I'm thinking of is a TPIS solid roller 701-700 or maybe a Crane 234/242 (HR234/365-25-1.9 IG) or a Comp 12-468-810 292XFI HR13 292 300 242 248. Since I hardly ever drive the car I 'm thnking of going wild with the cam. Some people think it is hopeless with a Super Ram but there are guys on the Corvette forum that make big power with Super Rams and big cams. A friend of mine is ready to install the Comp cam listed above in his 434 Vette with a 6 speed. Plus I might ditch the cats since I have classic plates now so I don't have to pass smog.

88BlackZ-51

iTrader: (2)

A few more questions. Your exhaust is it a L98 Corsa system or a LT1/LT4 system? If it is a LTx system. Do you still have the reasonator on, or did you go with an "X' pipe?

Out of those cams. I like the lift of the Crane 234/242. What is the lift, and lobe seperation? I am in the same situation with my heads. I have Kenny D. 195cc heads that are still in the box. I have had them flowed, and they flow 260/190 at .550 lift. So I am thinking if I do a 396, they will need to be mildly ported to reach in the 285/210 range.

You dynoed 363/434 at the wheels. You are making the torque that is foresure. I would expect if you got those heads worked on, and went with a different cam that would give you the extra 40 rwhp possible. 400rwhp/440rwtq sounds good doesnt it?

Hope I am not buggin you with 2 many questions.

89vette

It is an LT1 system. I have TPIS headers with 3" universal Random cats on the ends. From there I had tow pipes bent to fit into the LT1 Corsa cat back.

88BlackZ-51

iTrader: (2)

I am thinking a 230/230 cam would work well as well.
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auto or stick car? any dyno graphs or track times? 497rwtq is the highest i have personally ever heard.
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auto or stick car? any dyno graphs or track times? 497rwtq is the highest i have personally ever heard.