Rochester 2GV Main Jet Size - The 1947 - Present Chevrolet & GMC Truck Message Board Network

clemsonteg · 08-24-2014, 02:54 PM

I have a 1970 C10 with 307 and 2bbl Rochester carb. I am in the process of rebuilding the carb and found that someone over the last 40 years has goobered up the power valve, power piston, and main jets. I have found all the parts I need, but I don't know the main jet size. Does anyone know what the main jet size would be? Am I wasting my time rebuilding this carb?

Wrenchbender Ret · 08-24-2014, 04:26 PM

Most of the ones I have been into are .055.

clemsonteg · 08-24-2014, 06:55 PM

Quote:

Originally Posted by Wrenchbender Ret

Most of the ones I have been into are .055.

Thanks. I found a little bit of info online. It seemed to range between .053 to .056.

08-24-2014, 02:54 PM	#1
clemsonteg Registered User Join Date: Jul 2012 Location: Anderson,SC Posts: 953	Rochester 2GV Main Jet Size I have a 1970 C10 with 307 and 2bbl Rochester carb. I am in the process of rebuilding the carb and found that someone over the last 40 years has goobered up the power valve, power piston, and main jets. I have found all the parts I need, but I don't know the main jet size. Does anyone know what the main jet size would be? Am I wasting my time rebuilding this carb?

08-24-2014, 04:26 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,228	Re: Rochester 2GV Main Jet Size Most of the ones I have been into are .055.



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