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I have a question on the power my car makes??

Old 08-20-2014, 09:45 PM
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Default I have a question on the power my car makes??

2000+ LS-1 ~75k miles on motor
FAST 102 intake and throttle body
FTP 104 lid
Tuned for speed density
Custom Cam 239/247 .624"/.624" 110+0
Yella Terra ultralite 1.7 rollers rockers
Stock 241 heads
10.33:1 static compression 7.58:1 dynamic compression
Katech Rod bolts
Accel 42 Lb Injectors
Racetronix Fuel Pump with hot wire
TSP 1 7/8 longtubes
TSP True Dual Exhaust
Tuned by Charles Barber ar JR racing in Greenville SC

Transmission
Stock Rebuild ~ 10k miles ago
McLeod RST Twin Disc Clutch
McLeod Billet Flywheel
PST 3.5" Aluminum 1000HP Driveshaft

Rearend
Moser 9" ~1.5k miles ($4,100)
Backbrace
Fill and Drain Plugs
Wavetrack Diff
35 Spline Axles with Extended Wheel Studs
4.30 Gear
Aluminum Center Section
Adjustable LCA Mounts
Swaybar Mounts

Suspension
Midwest Tunnel Mount Torque Arm
UMI Lower Control Arms
Energy Suspension Swaybar Bushings and Endlinks
Chrome ZR-1 Wheels Stock Front and 17x10 Rear
Front Tires NT05R 275/17s
Rear tires Mickey Thompson 315/35 17 drag radials

This is my setup. Car made 440/387 today in 94* humid weather. I've had several people say it has head work, but the runners look stock to me, still have the factory casting look. Is this a higher than normal number for the setup? It was not made just to see a number so no toying with the tune or anything like that. Timing was at 28*. AFR was right at 12.
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Old 08-21-2014, 06:26 AM
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Either head work or a generous dyno IMO
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Old 08-21-2014, 06:53 AM
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It's a Dynojet. That's all I know abt it. Seems to be on par with other cars
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Old 08-21-2014, 07:31 AM
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440 rwhp for a cammed only LS1 is high. Mine made 410 rwhp with mods in sig, but yet it runs with 450-500 rwhp cars....that's how little the dyno matters
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Old 08-21-2014, 07:36 AM
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LQ4 6.0 rotaing asemble crank rods pistons rockers an 317 heads
best offer 80 thous on parts call at 516 578 5696
asking $500
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Old 08-21-2014, 09:12 AM
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I guess I should've worded that better. The dyno is on par with other cars. I think mine is high too but I looked into the runners on intake and exhaust and compared them to a friends stock heads that just came off his car and they look stock. Idk if they're milled or anything, but I don't think that would still put it where it is. The car made 417/379 with ls6 intake, stock throttle body, slp lid, stock maf, stock rockers, and 1 3/4 headers.
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Old 08-21-2014, 09:24 AM
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If the heads really are stock then that is fairly generous, especially considering it's through a 9" rear and large drag radials.

Dynos are just tools anyway.
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Old 08-21-2014, 11:06 AM
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Sounds to me like it's time to get some aftermarket or ported stock heads and see how much more it can make. Added compression will also be your friend.
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Old 08-21-2014, 11:54 AM
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I would be curious to see what it would make with a PRC 2.5 LS6 head on it but I'm gonna build a 408 for it and wait to choose heads then. I've got a nitrous kit on it just getting the stock motor where I want it and I've got some chassis/lightening to do now. It's a full weight 99 SS leather int and all. The only reason it was put on a dyno before the work that I did was to prove the gain I would get bc I had a couple ppl telling me it wouldn't pick up more than 10hp going from the ls6 intake and 1 3/4 headers. I'm not really all that concerned abt the number, just curious with the higher number considering the mods
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Old 08-21-2014, 12:11 PM
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Do you have the dyno graph? That is a bit high. The trap speed will tell you all you really need to know. Plan on a track visit soon?
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Old 08-21-2014, 03:40 PM
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I'm going to let it cool off before I go. It's in the mid to upper 90s right now where I'm at. I'll see if I can get the pic to load
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Old 08-21-2014, 03:45 PM
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I have a question on the power my car makes??-20140820_164707.jpg

I have a question on the power my car makes??-20140820_173335.jpg
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Old 08-21-2014, 04:35 PM
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The top pic is the only one I have with the 417 pull on it.
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