Disappointing HP numbers
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Join Date: Aug 2008
Location: Pearland, Tx.
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Power seems correct
I have the same crate motor you used but I left the LS3 heads in place resulting in 10.3:1 compression according to GM. I am running the BTR truck stage 2 V2 cam as well. I used the stock Ly6 intake and an LSA tb with xlink, 1-7/8 kooks long tube headers with cats hooked to the stock 2.75” exhaust and muffler. I also have the 14 bolt AXN axle with 3.73 gears and 31” tall tires. I dyno in 2nd because the stock driveshaft will not take a 3rd gear pull. The truck put down 375 rwhp and 385 rwtq. I have my shift points set at 6300 rpm. It’s just a number and it’s never enough. Seems like your setup is working as well as it should and the calculated numbers seem pretty close. If you wanted mid 400 to the tire you should have built a stroker. For reference my camaro had a 416 with LS3 top end, 235/250 tick cam, 6 speed, stock 10 bolt. It made 510 rwhp 495 rwtq and trapped 125 mph at 3685 lbs.
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