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 $1,995.00 plus return shipping.

 Bulletproof Your ‘602 Valve Train: Every racer who runs a ‘602 crate knows the stock valve springs are a real problem. The stock Chevy valve springs lose a lot of pressure after just a few nights of racing.

On the ‘602 crate motor, we are concerned about losing the valve spring pressure when the stock springs go south.  When the spring loss a significant amount of pressure, the valves will start to float.  This not only causes the engine to loose rpm and power but also very damaging to the valve train.

Install our “Look-A-Like” valve springs, retainers and locks and you will not have to worry about valve float again.

Look-A-Like replacement valve spring for the ‘602 Crate Motor. Same wire diameter, O.D. and installed height as the stock spring. While the stock springs last a few hundred laps, they will last a couple thousand laps.

Buy now!

602SP – 16 Look-A-Like springs $279.00

retainerThe stock Chevy retainers are made out of cheap low-carbon steel. Low-Carbon steel works for production street cars but is inferior for racing applications. Our chrome moly Look-A-Like retainer will not break.


#602R – 16 Look-A-Like retainers – $95.00

Look-a-Like valve locks for 602 crate.

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#602L – 16 Look-A-Like locks – $65.00

Our Crate Master camshafts are ground on original Chevy camshaft cores. The duration and lobe centers are changed; the valve lift is the same as stock.

Buy now!

NEW Crate Master Camshaft – $495.00

602 crate motor valve spring

Stock, Stock 602 springs, sorted and cryogenically treated. These are the best of the best stock springs.  They last 3 to 4 times longer than stock 602 springs.

Buy Now!

#602-CYO-G – 16 sorted & cryogenically  treated stock 602 springs $229.00

Yes, we can rework your new or used ‘602 crate heads. Sending your heads to us has never been easier! If you don’t have good head boxes, we will send you some. If you do not have a place to ship them, we will send UPS to pick them up. Here is a link for more details on How To Ship Heads to Brzezinski Racing Products.


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.  $2,995.00 for 1 pair of complete pair of “UnderCover Ported” new 602 heads   Currently are in stock. 

See also: Cylinder Head Resources


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