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Quote:
Originally Posted by russcc
What I used in the Navarro heads were Champ L78Cs with a 1/2"reach. It left about 1 & 1/2 threads exposed which I countersunk to eliminate them. They don't hit the exhaust valves with a 1007B cam, that has about a .350 lift on the exhaust & .365 on the intake.
I used old stock Autolite plugs washers as they were thinner than Champs to position the plug so less thread were exposed.
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Ditto on the Champ L78C plugs for my 59A/B with Offy .425 heads. I did not countersink. Running Schneider 248f cam with .350 lift.