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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: Jun 2009 Posts: 786 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 786 | My '48 Chevy 1/2 ton p.u. is powered by a rebuilt 1955 235 c.i. engine. I would like to increase the idle speed--a rebuilt Rochester carb. is in use. Can someone offer tech. tips to do this? Thanks! | | | | | Joined: Aug 2012 Posts: 1,214 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 1,214 | On the drivers side of the carb towards the bottom is the idle speed adjusment screw. It is on the linkage. turn it CW to increase rpm and CCW to decrease rpm.
You want to set your idle between 450 & 500 rpm.
Good luck
Dave
| | | | | Joined: Oct 2010 Posts: 1,232 'Bolter | | 'Bolter Joined: Oct 2010 Posts: 1,232 |
- Lonnie My '54 3104Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post. lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt. OLD STUFF ... houses, furniture, cars, wine ... I love it all | | | | | Joined: Jun 2009 Posts: 786 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 786 | As always, the advice + information found here is really appreciated! THANKS!!!
Out of curiosity, do the Carter carbs. adjust the same way? | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 |
Out of curiosity, do the Carter carbs. adjust the same way? [/quote]
Yes. All carbs have an idle speed screw, although the location may vary.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jan 2010 Posts: 4,263 Shop Shark | | Shop Shark Joined: Jan 2010 Posts: 4,263 | | | | | | Joined: Jun 2009 Posts: 786 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 786 | One must always ask/phrase the question correctly; my question must have read like a real dolt! I do understand the idle speed adjustment screw on a carb. As I am not familiar with the Carter carb., I thought this posting might help those with a Carter carb. as well.  Thanks again for all the good info. | | |
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