retired ralph
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AC Delco?
What was the original spark plugs? 74 350
- Thread starter retired ralph
- Start date
TimAT
Well-known member
Yep, good ol' AC Delco. Probably R44T or R44TS
6880 Mike
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- Jun 30, 2006
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- The Bluegrass State
- Corvette
- 1968 convertible; 1980 L-82
If memory serves, the plugs are listed on the tune up sticker. If not there, they'll be in the owner's manual.
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