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02-10-2004, 10:32 PM
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#1 |
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Registered User
 
Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 3,045
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Engine Stumbles
When I've got the truck in park or neutral and hold the rpm's at around 1200 the engine stumbles but if I go higher or lower it runs perfect. It's a 350 with a 750cfm quadrajet off a '71 Vette and HEI with a TH350 tranny. Any ideas what is causing this? vacuum leak, carb problems, ignition?
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'51 South Bend Model "9A" '56 Chevy 3600 NAPCO '74 Chevy Cheyenne Super K20-restored on 37's '72 GMC Sierra Custom K2500- in progress '08 GMC Envoy Denali '12 GMC Sierra 2500HD Denali '17 GMC Yukon XL VCCA member #58596 http://www.nohrco.com |
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02-10-2004, 11:57 PM
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#2 |
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Cause the Chicks DIG IT!!
Join Date: Nov 2003
Location: Beaufort SC
Posts: 509
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I'm no guru but 750 is a lot for a stock 350. You might be loading up in the middle rpm's but once you get to the higher rpm's its sucking up that gas better.
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02-11-2004, 12:43 AM
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#3 |
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Registered User
Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 3,045
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It has a medium cam in it, and it runs good except for at the certain rpm +/- 100. I know the carb needs a little work and wouldn't doubt it if it is the problem. Thanks
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