ridegreen78

I have an 02-04 ls6 cam on the way for my 4.8 Silverado. Are the 317 heads a good match for the motor and cam? I know they lower the compression but I didn't know if the combination of the heads and cam would make up the difference for the compression lost. Or will the stock heads be the best fit

wildcamaro

iTrader: (15)

I'd keep the stock heads...those 317s even though it has bigger ports and valves will lower compression down to approx 9:1...that cam will want compression...I believe the z06 was 10.7:1

ridegreen78

Alright then I'll just spend my money somewhere else. Thanks for the information