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Click on image for the lowdown. 
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| | | Forums66 Topics128,014 Posts1,055,328 Members48,419 | | 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!
| | | | Joined: Jul 2012 Posts: 306 Shop Shark | | Shop Shark Joined: Jul 2012 Posts: 306 | right now i have the BB just below the pointer about 1/8 it seems to have more power and starts real well
thanks
1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny
| | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | the BB isn't microscopically placed, many people run them not exactly on the BB. Check out the tech tip for using a vacuum gauge to set timing, I haven't tried it personally, my truck runs just fine on the BB. | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | As long as it runs good and starts good when hot try it some. | | |
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