4 bolt and 2gc

Ross, what are the maladies that need looking for? Could help a chap on the lookout for a carb.
Many thanks,
Martin.
 
used those caebs on the Hydro 284 engine and I think the jets were 52 when we ran it in the dyno. bbut that might have been a little fat. try and hook up an AF meter for cruising around, dont need a rich engine on the street.
 
scooder said:
Ross, what are the maladies that need looking for? Could help a chap on the lookout for a carb.
Many thanks,
Martin.
Click to expand...

An easy thing to look for is that the air cleaner bridge across the choke isn't broken out (gone or cracked). Holley 94's air cleaners just clamp onto the OD of the air horn; on 2G's there is a stud or bolt that holds the air cleaner down. Over-tightening the air cleaner can break this bridge clean out of the air horn. There are repair kits for this but I'd avoid carbs that are busted.
 
I was given two of these 2GCs, with the hope of getting one good one out of them. Both had the same PN in the casting, yet there were differences. One didn't have a venturi vacuum port but did have a "Y" vacuum fitting in the base, one approx. 1/4", the other larger. I'll be using a SBC distributor and wondered if the smaller port in the "Y" should be used for the vacuum advance source? There seems to be several criteria that make for a good application:
1. Small G2C base
2. Venturi vacuum source
3. Choke dashpot in top (my preference)
4. Fuel input on left side (after 180* turn), (same side as dashpot)
Is there any other considerations for this application? Also, does anyone know a source that shows the different applications where these carbs. were originally used?
Thanks, Howard
 
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