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Click on image for the lowdown. 
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| | | Forums66 Topics128,094 Posts1,056,157 Members48,436 | | 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: Jan 1970 Posts: 365 Shop Shark | | Shop Shark Joined: Jan 1970 Posts: 365 | I run a 261 with 3.50 gears and an overdrive transmission (GM 89mm). At 65mph it runs 2000 rpm. I have NO issues pulling hills, and if a hill comes up there is always 3rd gear (1:1).
I get 20 mpg on the highway. | | |
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