hey just curious if anyone could give me a ball park idea of my horse power number?
i have a stock 2000 5.3 with 99f-body ls1 intake, tb, injectors, mated to a 4l60e. i am installing patriot stage 2 cnc ls6 heads, patriot 225/229 .580/.590 144 +4lsa, for the trans circle d converter 3200-3400 stall and 4.10 gears. probly going to be up sizing injectors too.

thanks for any input

 

Wouldnt be my first choice since that cam is a bit dated and there are much better selections that would prove more power out there these days, but I would think that you would probably see about 355-360 maybe +/- 5 on either side of that. Hard to say really. I would poll over on performance trucks and see what those guys tell you. Only a few of us are on both sides of the fence and you will mainly see people running 5.7-6.0 in this section of the forum. If it helps I have a 221/226 cam only 4.8L that puts out 312rwhp and 304rwtq while running the truck manifold still.

Let whoever is tuning your car/truck determine what you should do with injectors.