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Spark plug question

LSUpete

Contributor
Bronco Guru
Joined
Jul 11, 2001
Messages
2,063
I need some advice on spark plug selection.

My restoration project includes a 1969 351 Windsor model that has been completely rebuilt with all new parts. The block has been bored and honed to .040 and fitted with Sealed Power Hyperuetectic pistons part # H336CP. The stock heads have been completely rebuilt and fitted with 2.02 intake and 1.60 exhaust valves and screw in studs topped off with Comp Cams Magnum non rail roller rockers part # 1442-16, as well as a Comp Cams 280H camshaft that has .512 lift on both the intake and the exhaust with a .110 lobe separation. This engine has a nominal compression ratio of 9.5:1.

Which Autolite spark plug number should I install?

:cool:
 
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