Rochester 4GC Carb
#2
They are great carbs if they are properly built with good parts. Not being in production since the 60s may make parts hard to find but definitely possible. If you are dealing with a car equipped with the Slim Jim trans they are the only carbs with the proper linkage to hook up.
#4
Just curious. I have intentions of building a 394 one day like all other potential projects I have.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
#5
Just curious. I have intentions of building a 394 one day like all other potential projects I have.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
#8
Just curious. I have intentions of building a 394 one day like all other potential projects I have.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
Put it in a late 30's or early 40's olds.
Cool looking carb, kinda aiming to keep the 394 old school looking.
I know nothing about Slim Jim trans, kinda kicking the idea of a standard with the 394.
Last edited by D. Yaros; August 13th, 2018 at 02:47 PM.
#10
Here is a place that I've bought 4gc parts from, there are others if you look a round. They are not a bad carb if not to worn out..... Tedd....https://quadrajetparts.com/accelerat...c-104_109.html
#12
My Q-Jet packed it in.
I just so happened to have a brand new Holley 600 Vac secondary in a box in the shed.
Had to get an adaptor plate as the manifold bolts do not line up with the Holley holes. Drives beutifull ever since.
You can also use a 600 Edelbrock, apparently bolts straight on, or I think you might need an adaptor plate to go to square bore.
I just so happened to have a brand new Holley 600 Vac secondary in a box in the shed.
Had to get an adaptor plate as the manifold bolts do not line up with the Holley holes. Drives beutifull ever since.
You can also use a 600 Edelbrock, apparently bolts straight on, or I think you might need an adaptor plate to go to square bore.
#13
4GC are either good or junk in my experience. Very sensitive to having the right throttle plate to bowl gasket. They have primary and secondary side floats and the secondary air valves are buried deep in the carb. Kinda small in CFM department too, 450-500 IIRC. But set up right they will boogie with the rest of same or near CFM rating.
Any chance this one still has its aluminum ID tag under an airhorn screw? Makes it ever so much easier to get the right rebuild kit.
Any chance this one still has its aluminum ID tag under an airhorn screw? Makes it ever so much easier to get the right rebuild kit.
#14
4GC are either good or junk in my experience. Very sensitive to having the right throttle plate to bowl gasket. They have primary and secondary side floats and the secondary air valves are buried deep in the carb. Kinda small in CFM department too, 450-500 IIRC. But set up right they will boogie with the rest of same or near CFM rating.
Any chance this one still has its aluminum ID tag under an airhorn screw? Makes it ever so much easier to get the right rebuild kit.
Any chance this one still has its aluminum ID tag under an airhorn screw? Makes it ever so much easier to get the right rebuild kit.
Thread
Thread Starter
Forum
Replies
Last Post
eddieunderground
Transmission
0
July 28th, 2013 06:06 PM
eddieunderground
Vintage Oldsmobiles
11
November 6th, 2010 05:04 PM