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Click on image for the lowdown. 
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| | Forums66 Topics128,052 Posts1,055,719 Members48,426 | | 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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| 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!
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| | | Joined: Jan 2021 Posts: 5 New Guy | | New Guy Joined: Jan 2021 Posts: 5 | I have a 60 model 261 engine with 3.55 rear. According to my calculations I am running about 3100 rpm at 70 mph. This a daily driver and some time on the highway. I guess I am concerned about what kind of highway rpm's the engine will tolerate without damage. The engine is stock.
Thanks, Pete | | |
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