Re Jet Carb After Motor Swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

junk4cash · 09-04-2013, 04:38 PM

Swapped the tired smoker 230 out of my 66 and replaced with a Mexican GM crate 292. I had the original Rochester 1 bbl carb rebuilt a year ago and ran it on the 230 with no issues. The 292 runs great but seems to have an issue when in 3rd gear. Seems a bit fuel starved or almost like it wants to stumble but it doesn't. Wondering if I should re jet the carb. Thoughts?

Irishbleueyes · 09-04-2013, 11:36 PM

Quote:

Originally Posted by junk4cash

Swapped the tired smoker 230 out of my 66 and replaced with a Mexican GM crate 292. I had the original Rochester 1 bbl carb rebuilt a year ago and ran it on the 230 with no issues. The 292 runs great but seems to have an issue when in 3rd gear. Seems a bit fuel starved or almost like it wants to stumble but it doesn't. Wondering if I should re jet the carb. Thoughts?

Definitely, the new motor will have different vacuum pressure. Might also investigate the timing curve.. fine tune it and enjoy doin it...

junk4cash · 09-05-2013, 10:17 AM

Great info. Thanks!
Posted via Mobile Device

09-04-2013, 04:38 PM	#1
junk4cash Registered User Join Date: Dec 2011 Location: Kansas City, Mo Posts: 160	Re Jet Carb After Motor Swap? Swapped the tired smoker 230 out of my 66 and replaced with a Mexican GM crate 292. I had the original Rochester 1 bbl carb rebuilt a year ago and ran it on the 230 with no issues. The 292 runs great but seems to have an issue when in 3rd gear. Seems a bit fuel starved or almost like it wants to stumble but it doesn't. Wondering if I should re jet the carb. Thoughts? Last edited by junk4cash; 09-04-2013 at 05:02 PM.

09-05-2013, 10:17 AM	#3
junk4cash Registered User Join Date: Dec 2011 Location: Kansas City, Mo Posts: 160	Re: Re Jet Carb After Motor Swap? Great info. Thanks! Posted via Mobile Device



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