LS3 Cam only, E85, 507 WHP

2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
and cheap around here. at around $2/gallon you can't beat it. One good thing about living in the cornbelt.Car is naturally aspirated, temp was around 75 when tested.
Here are the specs, not many as stated
Nick Williams 92MM TB
stock intake
stock heads
stock bottom end
Cam....
238/242 591/591 112+4Stainless works headers 1 7/8"
tuned on E85. mixture was actually 86% Ethanol to be exact.
remainder of drivetrain.
RPM T56
Spec 3+
built 10 Bolt (hold on baby!!)
3:73
I have not had the car to the track since the retune,
before that I was cutting high 11's with 2.0's 60' @ 118-120ish
Car driveability is ok. The car does want to lug a little bit in lower rpms, but am still able to drive in 6th at 55 and not be anoying.
However, I wasn't able to do full pulls as I was getting lean and running out of fuel. Injectors were fine, but needed to put the racetronix hotwire kit on. I'd get to around 5K and my fuel psi would hit the floor.
From 5k and under I gained between 10-30 HP and about 20 TQ accross the board from the 93 to E85. You can see my Stoich stayed consistent in my graph, and if you look at the table of numbers. on 93 before the pump hotwire kit I was spiking into the 14's at 5K, and was hitting 419 HP at 5K on 93octance. Now on E85 I'm at 442 at 5K running 10.5ish on the A/F, ever so slightly rich for E85. Yes I could probably squeeze a couple more horses from it, but am happy with breaking the 500 mark. I also cut out at 6200 rpm. I think I might have seen 510 if I kept my foot in it till 6.5 or so, redline is set at 6800.
I'll try to get some video of the dyno up soon.
Here is a video of the car running pre full exhaust, pre dyno-tune, and pre e85. Car was dyno'd with 3" duals through an X pipe, and flowmaster 40's.
http://www.youtube.com/watch?v=YBCK-QvXJog
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I need to put my upper half on a ls3! haha
I'm curious how the power would fall off naturally if you kept spinning it past 6300. I'm looking to get over 500rwhp with my new 6.0l build (372ci), but I'll need to spin it past 6500 with my current tire/gear combination. Did you have any dyno pulls past 6300 by chance?
Where did you get this cam grind from?

Mike
. This spring we need to have a cruise to the local track nate.Chris
maybe. Last trip to the track is gonna be hard to forget LOL. I am ready to go again just to see how it does. I still don't think I'll be trying for any record breaking 60's. I'll just take it easy, and go fishing. A lot.
Either way, I think real hard on it, and maybe we'll make a trip sometime early next spring.








