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Spark Plug Gap Question

340challconvert

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Spark Plug Gap Question

Installed the Edelbrock Performer RPM aluminum heads #60179 designed for the 68-73 340 engines onto my newly rebuilt "close to stock" specs 1970 340 engine.

Engine was bored 30 over as a clean up with new pistons

Initial start will be with points ignition

Edelbrock recommends the use of Champion RC12YC spark plugs with these heads. No recommendation on spark plug gap.

Purchased the plugs; I was going to gap at the usual .035.
Any thoughts on this appreciated.
Phil
 
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Xcudame

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That's where I'd gap them at. No reason to go crazy with a larger gap and stock ignition. When my 70 Challenger was my daily driver and only car, I used to gap the at .034 because they open up about . 001 every 1000 miles or so.
 
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