Firechicken

Would I loss or gain power buy removing my factory ls1 heads and installing a set of factory 5.3 truck heads? I have a 98 Z28 with a Vig 3200, Macs&ORP, 3" catback, and a lid. Everything else is stock. Are the Valve sizes the same? What about intake and exaust runners, and compression?

someday

the truck intake valves r only 1.84, so u need 2.00 or 2.02 valves... the compression will be raised about a half a point... TEA makes some nice truck heads at a decent price...

Firechicken

So would I gain or lose power buy just swaping the heads? Or would it be about the same?

Fireball

iTrader: (21)

probably lose due to the smaller valve size

99 Black Bird T/A

iTrader: (4)

Might pick up a little at low rpm but overall I think you'd loose a good bit of area under the curve and loose peak hp too.

Firechicken

Thanks for the info!