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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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#76810 04/27/2007 4:04 PM | Joined: Nov 2002 Posts: 2,767 Carburetion specialist | | Carburetion specialist Joined: Nov 2002 Posts: 2,767 | Wally, Doug's posts are excellent. I can only emphasize his comment about a small change making a marked effect.
Carter used to tweak in metering rod increments of 0.00125 inch.
Another tuning tip is to vary the float adjustment. Adjusting the fuel level plus or minus 1/32 of an inch will make a difference (float adjustment is ALWAYS critical). Don't do more than 1/16 inch higher or 1/8 inch lower than specification.
Jon.
Good carburetion is fuelish hot airThe most expensive carburetor is the wrong one you attempt to modify. If you truly believe "one size fits all," try walking a mile in your spouse's shoes!The Carburetor Shop | | |
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