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Mod | | | Forums66 Topics128,176 Posts1,057,058 Members48,460 | | 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: May 2001 Posts: 1,907 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,907 | I got my 261 running with its early Monojet carb after engine work. I've never had a problem with that carb. It started a little rougher than before but I could idle around around the neighborhood in my 2nd gear (3rd by total count.) It just wouldn't go 30-40 MPH after shifting into high. Give it more gas, it would kinda poop out.
So I decided to pull the Monojet and install my YF 2100s that I've had as a backup for years. I noticed, though, that the 2 Monojet nuts holding it to the manifold were only hand tight!
Yikes! Could that have been the problem with it in the first place?
I'm an experimentalist at heart so I'd like to put the Monojet back on and test the theory. But there is the YF. What do you think? March forward with the YF or put the Monojet back?
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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