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Mod | | | Forums66 Topics128,162 Posts1,057,042 Members48,463 | | Most Online14,466
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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| | | | Joined: Aug 2013 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2013 Posts: 255 | Can anybody tell me a good spark plug to use with a 1950 GMC 453 Firetruck, 270 ci engine running GM TBI with HEI, Computer controlling spark timing. Engine has "H" head, dual Fenton exhaust. Otherwise bone stock 10000 lb truck. Gonna try and install everything this weekend. Thanks. Jim
| | | | | Joined: Aug 2011 Posts: 45 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2011 Posts: 45 | NGK 3332 works well in the GMC heads. Gapped at .045 with HEI.
The older I get, I only want to work on older rigs.
| | | | | Joined: Aug 2013 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2013 Posts: 255 | Thanks 1940GmcJoe. Probably pick up a set tommorrow if I can find them. | | | | | Joined: Aug 2013 Posts: 255 'Bolter | | 'Bolter Joined: Aug 2013 Posts: 255 | Picked up a set of the NGK 3332 a at OReillys. Already in. Looked just like the old AC 44 coms with less rust and pitting. Gapped at .045 for the HEI. Thanks again for the info. Jim. The old plugs did look like I've got it tuned good. All nice clean and a tannish color. | | |
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