Chevy 602 Crate Motor

Add 35 Horsepower to Your ‘602 Crate Motor 

FAQ

The data on this page is for information only. We no longer supply or work on heads for the 602 crate engines.   Our Look-a-Like valve springs, retainers, camshafts and bottle cap parts are still available. 

The new stock ‘602 crate motor will usually make 365 to 375 horsepower.  After our “Undercover Porting” cylinder head modifications & Crate Master camshaft, the same motor will typically dyno out at 410 to 420 horsepower.   Torque also improves 15 to 30 ft. lbs.

Our ‘602 crate cylinder head modifications includes:

    • Disassemble and clean YOUR ‘602 cylinder heads
    • “CNC UnderCover Porting” modifications to intake ports, exhaust ports, and chambers.
    • Hone the valve guides to correct clearances.
    • Machine a flow bench developed valve job.
    • Surface the heads to the original cc’s, or smaller if you want.
    • New Look-a-Like intake valves that flow better than the Chevy intake valve.
    • New Look-a-Like valve springs that will not lose spring pressure like the Chevy springs.
    • New Look-a-Like retainers that will not break.
    • New Look-a-Like machined valve locks. Not stamped like the stock Chevy locks.
    • Reassemble with original Chevrolet valve seals.

 


602 crate head, complete

 

 

 

 

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