I have the 2001 Edlebroc catalog and they have a tech. tip on page 104 that states "To gain more spark plug clearance ........, we advise using a Champion RC series plug, such as an RC12yC. These spark plugs a 0.230 shorter than a conventional plug and have a 5/8" hex for easier access in tight locations."
Sounds like they might be worth a try.
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1970 short bed fleetside
Richmond , Texas(just S.W.of Houston)
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1970 short bed fleetside
1949 all origional chevy 3600
1974 camaro
Richmond , Texas(just S.W.of Houston)
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