Question??
They will bolt right on, however your LS1 heads have a larger chamber and will drop that 4.8's compression even farther than it already was from the factory 
Not an ideal combo, even for boosted trucks.
Not an ideal combo, even for boosted trucks.
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
