600 Rwhp Na
I know the guys at East Coast Supercharging have made right at 600 RWHP on something like a 454 cu in engine without power adders and some LS6 heads we did. They post on Corvette Forum
Judson Massingil from SAM made 680 rwhp NA with his 418 ci solid roller motor with ported LS6 heads. He went low 9s at 154 mph NA with the motor. I believe he's working on something more potent right now.
__________________
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.
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.
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Originally Posted by KAOS
on pump gas, is it doable
With the 4.200" sleeves coming out from Darton and the availability of the LS7 heads to the aftermarket, I'm sure somebody will make a 450+cid motor that will make that much power and then some. I'm betting that with a monster bumpstick and a few boltons the new Z06's could be close.
Nate
I think it is very doable with a larger inch engine, say 440ci and some of the newer cylinder head offerings. Solid rollers are not necessary with certain hydraulic lifter available now but they need to be set up properly. But like someone said, this would not be cheap.
Originally Posted by KAOS
how big of a cam could a person run
Originally Posted by mikey
The 553 rwhp 402 LS2 that we did had a 248/250/113 Dominator grind in it. Those 0.050" number mean nothing though
Originally Posted by 93LS1RX7
What kind of trans is Judson using?
Suspended Sponsor
Joined: Oct 2004
Posts: 371
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From: Just outside of Palm Springs Ca.
That is a very interesting point alot of people fail to realize, transmission has a lot to do with RWHP numbers. Something else to realize is the fact that the peak number is not really what matters or makes the car fast, its the average number that counts for racing. Take the engine we just built for the off road truck, it made 634HP and 610TQ and it has a VERY broad power band. If you put that engine up against say a 346 making the same peak number but less average, the little engine would get squashed by the big engine as it would accelerate much faster through the entire RPM range, assuming you could hook up the big torque 
-Bryan
-Bryan
