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Click on image for the lowdown. 
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| | | 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!
| | THANKS!
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: Oct 2006 Posts: 9,671 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 9,671 | One other thing he could check Jon, is the throttle body inside
diameter. 1.560" on the 235 and 1.680" on the 261. Venturi is
would be hard to check with the carb assembled but it's 1.340"
on the 235 and 1.460" on the 7005140 261 Rochester.
dg
Denny G
Sandwich, IL
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