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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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#14310 08/08/2003 3:09 AM | Joined: Jul 2003 Posts: 26 Apprentice | | Apprentice Joined: Jul 2003 Posts: 26 | Would anybody may help me regarding the right spark plug and gap for it on these engines?. They all are on pick ups I am restoring. Does it make any sense to use an extension to the spark plug when heavy blue smoke shows up at the tail pipe?
Chevy'51
GMC '54
GMC '56
GMC '59
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