489rwhp / 458.4 rwtp *video*
Thread Starter
9 Second Club
Joined: Nov 2001
Posts: 1,445
Likes: 0
From: Bay Area, CA
489rwhp / 458.4 rwtq *video* Update more TQ then first thought maybe? http://www.newtechperformance.com/NickN.wmv
some details, ARE built 422, 242/242 112 cam, 1-7/8s QTP LT headers, stock, LS6 intake, 4 inch magnaflow catback. oh 10.75:1 CR
AF was at 12.5:1 I was sitting in the car and the dyno operator told me it was 12.8, and I left it at that, he just wanted to get my outta there with my loud *** car! haha
I am wondering why my peak TQ was so low, not neccessarily a low number but low in rpms it seems its about 2-300 rpm early in peak! could it be due to the intake manifold restriction perhaps?
SAE numbers were 489 rwhp and 458.4 RWTQ
actual HP numbers were 505.5 rwhp and 474 rwtq
I think the weather station was having some problem, now that that i think about it, we had to pull some ice out of the wideband! and the temps were around 60 degrees with a high humity to I don't think the correction factor should have been so much, for a day like that as it wasn't that cold and humid.
I will also add some drivetrain details, mcleod twin disk clutch, very heavy!, denny's nitrous ready steel drive shaft! very heavy as well, 12 bolt 4.10s and 17x11 AFS wheels with 315 nittos at 25 psi of air pressre
some details, ARE built 422, 242/242 112 cam, 1-7/8s QTP LT headers, stock, LS6 intake, 4 inch magnaflow catback. oh 10.75:1 CR
AF was at 12.5:1 I was sitting in the car and the dyno operator told me it was 12.8, and I left it at that, he just wanted to get my outta there with my loud *** car! haha
I am wondering why my peak TQ was so low, not neccessarily a low number but low in rpms it seems its about 2-300 rpm early in peak! could it be due to the intake manifold restriction perhaps?
SAE numbers were 489 rwhp and 458.4 RWTQ
actual HP numbers were 505.5 rwhp and 474 rwtq
I think the weather station was having some problem, now that that i think about it, we had to pull some ice out of the wideband! and the temps were around 60 degrees with a high humity to I don't think the correction factor should have been so much, for a day like that as it wasn't that cold and humid.
I will also add some drivetrain details, mcleod twin disk clutch, very heavy!, denny's nitrous ready steel drive shaft! very heavy as well, 12 bolt 4.10s and 17x11 AFS wheels with 315 nittos at 25 psi of air pressre
Last edited by Nickn20; Jan 12, 2004 at 05:17 AM.
Banned
Joined: Sep 2002
Posts: 1,298
Likes: 0
From: So Cal, CA
Awesome video! great setup and showing us the a/f and the rwhp curves etc....
Why do you have aftermarket fuel rails and the fuel system on there??? Would the stock fuel system not support 500 rwhp with a good 255lph intank pump?
Why do you have aftermarket fuel rails and the fuel system on there??? Would the stock fuel system not support 500 rwhp with a good 255lph intank pump?
Trending Topics
Thread Starter
9 Second Club
Joined: Nov 2001
Posts: 1,445
Likes: 0
From: Bay Area, CA
Originally Posted by C4VetteLS1
Awesome video! great setup and showing us the a/f and the rwhp curves etc....
Why do you have aftermarket fuel rails and the fuel system on there??? Would the stock fuel system not support 500 rwhp with a good 255lph intank pump?
Why do you have aftermarket fuel rails and the fuel system on there??? Would the stock fuel system not support 500 rwhp with a good 255lph intank pump?
JRP, the car is very streetable, I drove it 30 miles to the dyno and back.
Ryan, yea I am pretty happy with it, but I know there is a lot more there, with a better intake, I can't wait to see what the LSX 90 mm does for me as well.
I got the files from the dyno I had a cutouts open run that is not in the video, it is a LOT louder, as someone mentioned paint was falling off the walls! anyway best SAE numbers were 493.4 rwhp 509.4 unccorected.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
Thread Starter
9 Second Club
Joined: Nov 2001
Posts: 1,445
Likes: 0
From: Bay Area, CA
ok I have determined since a dynojet measures HP and not TQ, that my TQ numbers are completely wrong! I got my hands on the MPH graph, and recalculated my rpm and TQ points, it sounds about right..... check it out!
peak HP occures at 5600
peak TQ is 538 ft/lbs! I'm just gonna have to redyno I guess.
BTW typo on the equation its late, lol
TQ = (HP*5252) / RPM
peak HP occures at 5600
peak TQ is 538 ft/lbs! I'm just gonna have to redyno I guess.
BTW typo on the equation its late, lol
TQ = (HP*5252) / RPM
Last edited by Nickn20; Jan 12, 2004 at 07:03 AM.
Thread Starter
9 Second Club
Joined: Nov 2001
Posts: 1,445
Likes: 0
From: Bay Area, CA
91 octane 
hehe I got this biatch at 29 degrees though! the first motor was 11.5:1 and got a really bad tune from ed wright, the motor detonated itself to death pretty much, my friend owned the car at the time, anyway ARE redid the motor for him and its at 10.7:1 I bought the car in peices, and put it back together......check the pics in thes sig!!!
hehe I got this biatch at 29 degrees though! the first motor was 11.5:1 and got a really bad tune from ed wright, the motor detonated itself to death pretty much, my friend owned the car at the time, anyway ARE redid the motor for him and its at 10.7:1 I bought the car in peices, and put it back together......check the pics in thes sig!!! 
