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Mod | | | Forums66 Topics128,080 Posts1,055,953 Members48,430 | | 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
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
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#12153 04/19/2002 7:04 PM | Joined: Sep 2000 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2000 Posts: 67 | I know it's not a straight 6 but I could use some help anyway. My uncle just purchased an '87 GMC Vandura with the 4.3L V-6 in it. We are wondering what the recommended spark plug gap is supposed to be. Thanks.
Aaron | | |
#12154 04/19/2002 7:12 PM | Joined: Mar 2000 Posts: 1,177 Red dot, center of chest ... | | Red dot, center of chest ... Joined: Mar 2000 Posts: 1,177 | It's either 45 or 60, and I'd bet on 45. | | |
#12155 04/20/2002 1:36 AM | Joined: Oct 2000 Posts: 112 Shop Shark | | Shop Shark Joined: Oct 2000 Posts: 112 | 65 chevy looked up in chilton's reads 4.3 262 spark plug gap 0.40 R43cts plugs.  jbennett 40 burb | | |
#12156 04/20/2002 3:27 PM | Joined: Sep 2000 Posts: 67 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2000 Posts: 67 | Thanks for the help guys. Since this thing doesn't have an HEI distributor, .040-.045 does sound about right.
Aaron | | |
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