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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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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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| | | | Joined: Mar 2015 Posts: 26 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2015 Posts: 26 | My 261 is a 1963 which is a late casting. I want to go with duel headers with Rochester carbs. It presently has a single Rochester and exhaust. Patrick's Antique have been very helpfull. Any one out there having dressed up their 261 having advice? Pictures would be great. | | | | | Joined: Jan 2000 Posts: 591 'Bolter | | 'Bolter Joined: Jan 2000 Posts: 591 | I used 2x Carter-Webers from Langdon on my 261. Worked great.
don | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | I have also used Langdon's dual Carter-Weber carburetors on my 1960 261 (bored 0.060" over - around 270 ci). They were very well-behaved carbs; however, I think they were "too small" for my engine. I did not get as much response as I hoped-for at cruising speed. Sweet uses two older/smaller Carter carburetors, I think. They seemed to be a good match for his 261. I now use a single Holley 94/AA-1 two-barrel Carburetor with adjustable jets (from a GMC 302 engine). This set-up seems to be pretty good - but it does not have the "eye-appeal" of dual carbs. | | | | | Joined: Sep 2014 Posts: 385 Shop Shark | | Shop Shark Joined: Sep 2014 Posts: 385 | What about using two of the larger 32/36 carbs from tom L on the 261? Or possibly the 38/38 DGAS ones?
| | | | | Joined: Sep 2014 Posts: 385 Shop Shark | | Shop Shark Joined: Sep 2014 Posts: 385 | How was your low end response Tclederman with the dual 32's from tom? | | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | Motorcraft 740 (used on 97 ci Pinto engines)
Very smooth when taking off easy (most likely just one barrel of each carb being used); and, no hesitation but much more power when taking off fast (most likely the second barrel of each carb cutting in).
Gas mileage was good:
- up to 18 mpg at 55-60 mph ~ 2,100-2,300 rpm
- 12-14mpg at around 65 mph ~ 2500 rpm | | |
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