Chevy 602 Crate Motor

Add 35 Horsepower to Your ‘602 Crate Motor 

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.

Cost to modify YOUR complete ‘602 heads is $2,021.00 plus return shipping.


602 crate head, complete

We can rework your ‘602 heads or, you can buy a NEW set of complete heads and just bolt them on the motor!

These are the same new Chevy castings that come on the ‘602 crate motor. They are “Undercover Ported” and assembled with our “Look-A-Like” valve springs, retainers and valve locks . Ready to bolt on. Part Number LMS-602-UC – $3,021.00 plus shipping for 1 pair of complete pair of “UnderCover Ported” new 602 heads    

602 Crate Top End Package: Includes above listed Part Number LMS-602-UC complete cylinder heads, #2 Crate Master Camshaft, Bottle Cap bottoms – see our Bottle Cap Video – and instructions… $3,695.00 plus shipping.

 See also: Cylinder Head Resources


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