Over the winter Chris is working on upgrading the 406 in his Chevelle. This will include new Wiseco lateral gas-ported & coated pistons with the upgraded .043/.043/3mm ring pack like we’ve been running in our ’57 in the 372 SBC [new pistons pictured below]. DG Machine also resized Chris’ Manley rods. The engine with the new +.040″ pistons will be 409 cubic-inches.
Chris will also be replacing the valves in his Brodix 227 M2 heads with Ferrea cut-down valve stems, and installing new, larger 1-7/8″ headers which should improve the midrange and high gear performance with increased flow numbers. DG Machine is doing all the machine work for this upgrade.
Please note the old rod & main bearings looked like new after nearly 250 runs! –
Chris has made excellent progress on the engine, short-block is now complete as pictured below. He has also notched the front crossmember to allow the installation of a NHRA-approved oil drip pan to the Chevelle, in case he desires to race Super Street. – Roger
Update February 26, 2023:
Chris has nearly completed the refurbished engine for his Chevelle. New Ferrea cut-down valves are in the heads, valve-to-piston & dome-to-chamber clearances checked, and new 1-7/8″ Hedman headers fit well. All that remains is to install the Jesel shaft-rockers, prime the oiling system and install the distributor to complete this project. GOOD JOB by Chris and we look forward to seeing how his Chevelle responds this spring! Our thanks to DG Machine for their help with this upgrade! – Roger
Update March 5, 2023:
Chris now has the engine back in the car and is getting excited about getting the Wagon back out to the track this Spring! LOOKING GREAT! – Roger
Update March 11, 2023:
Chris and Paul fired the fresh engine for the Wagon today, almost ready for the strip! – Roger
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