I have a M6 with stock 10 bolt (till it blows).

flow .272/.192 @ .550 lift,they feature 2.00/1.55 manley valves, Comp Cams springs, titanium ret, 10 deg locks,Comp Cams Hi Tech rokers on Comp Cams 7/16 studs,3/8 Comp Cams push rods, Buaer Racing Engines custom grind solid roller cam with 248/.260 dur @ .05 lift .619/.629 lift on a 111LSA(this is ground for N2O), Comp Cam lifters.

 

Yeah I'd say you're a little low especially for a cam that size. What do you have in it for a tune and what was your A/F ratio? Was it a smooth curve or was it braking up during the run?

 

Unanswered questions:

I'm guessing you have a stock T56 and stock clutch, stock 3.42 gears, and stock LT1 heads with some work done to them. You told us that you have Comp Cams springs... but what model? 918s?

 

Sorry lloyd elliot heads with above flow numbers. Have stock t56 with stage 4 clutch ceramic discs grabs like a mother. I will have dyno chart up shortly.

 

Dyno Sheet:


Not the best image, but tells you what you need to know. Also the bottom is air fuel ratio

 

Torque curve and fuel both look good. With a cam that size, I'd think your hp would be peaking a little higher than 6250 rpm. I'm also not seeing no 420 rwhp @ 6800 rpm. What kind of timing are you running @ WOT?

 

That N20 cam is "248/.260 dur @ .05 lift .619/.629 lift on a 111LSA" and from BRE? I think I've seen a few posts from him about super low LSA's that most people wouldn't believe and splits that differ from conventional nitrous cam theory.

Looks run of the mill to me.

But don't get caught up in the dyno. Take it to the track and start trouble shooting there. Fix the little things as they add up. I've dynoed 337 and traped 94ish in the 8th.

 

wow thats the second bret made LE cam i have seen that was just huge. i bet that lobe design is one from comp cams solid roller specs. jsut take the car to the track and see what it lays down , you might change your mind after that. good luck man, it will all work out in the end.

 

My last time to the track, before tuning (lean condition and only 370hp) and rev limiter set at 6200 I ran a 12.7@112 with a 2.2 60'
I need a new rearend 4.11's and some drag slicks.

 

What size N20 shot you planning to use and why does it look like the is a pretty big spike in the torque curve around 5900 rpm? I also don't see a run up to 6800 rpm as you stated before?

 

If you are not happy now with your numbers...wait until your put a beefy rearend and drag tires on the car...

Dyno numbers are not the end all of how a car "will" run, but an indication of how it "might" run.

You be surprised at how fast some cars are while not making much rwhp....combination is the key.

Good luck.

 

Whats your intake/exhaust setup?

 

I'm think a port matched intake would help... do you have cats?

 

No CATS DUAL 3in w/ x pipe and bullet mufflers. Intake is moroso cold air intake 58mm throttle body and intake ported to match. (also gasket matched intake)

 

Thats wierd, I can't belive you only put out 420rwhp. The tune looks fine, you have all the right boltons.