400hp on 5.3?
#5
If you use the standard 20% loss of horsepower through the drivetrain, then any of the combos putting down about 320 at the rear wheels will give you 400 at the crank. Something like a tr 220 or cam of similar size with headers/ bolt ons should do it pretty easily. Several guys here have put down about 340 at the wheels, or approx 425 at the crank using that combo
#6
I figure i can get around 380 at the crank on my 5.3 Colorado. I just have a ported TB and dynotune at this time, but plan on headers and cam with a E fan later on. It won't be anything like my modded C6 Vette, but around 320hp to the wheels will be much better than stock.
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#10
To keep from starting another thread, Ill ask this here. The motor in my truck has 193,000 miles and next weekend we are putting in another 5.3 that only has 43,000. How does wear affect these engines? Can i expect the new one to run stronger?