JCM Motors
Actual Chevrolet engine on the JCM Motors dynamometer
JCM MOTORS

Engine Dyno &
Cylinder Head Services

Dyno testing, machining, porting, flow testing, and valve spring testing.

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Latest from the shopYouTube
Engine on the dyno at JCM Motors
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SHOP JCM MOTORS

Cylinder Heads for Sale

Shop LS and small-block Chevy cylinder heads. Listings show available configurations and current purchase options.

LS cylinder head product photograph

LS Cylinder Heads

View LS cylinder heads currently offered

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SBC cylinder head product photograph

SBC Cylinder Heads

View small-block Chevy cylinder heads

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WHAT WE DO

Shop Services

Explore each service and watch the related work on its page.

Engine dyno testing results

Engine Dyno Testing

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CNC valve seat machining

Cylinder Head Machining

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Porting & Flow Testing

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Valve Spring Testing

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INSIDE THE SHOP

Watch the work

Dyno runs, machining, porting, testing and engine projects from the JCM Motors YouTube channel.

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PARTS I USE

Shop tools & parts

A small selection of parts and tools I use, with Amazon affiliate links where available.

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