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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!
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| | | | Joined: Sep 2009 Posts: 5 New Guy | | New Guy Joined: Sep 2009 Posts: 5 | I have a 6cyl in my 62 chev that will not run on top end its like the accelerator pump in the carb is out it wont handle quick throttling it just sucks air til fuel finally catches up but when u drive it it wont get up and go like it should but it idles great and .i rebuilt ehe carb and its doing the same thing it did before the rebuild.new tank good gas and points and plugs in it . | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Sounds like you are running lean or the timing is slow. Try advanceing the timing a few degrees first & see if that helps. If not check the accel pump by looking down the throat of the carb with the engine off. Work the throttle from idle position. A stream of gas should squirt in to the throat each time
. Pull the top off the carb & make sure the float level is correct. Make sure the power valve rod goes into the hole & knocks the ball off it's seat. Look at the main jet & see what size is stamped on it. It should be 055-058 for a 235. Sometimes the rebuilders mix up parts & it could be to small of a jet.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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