carb size
Thread Starter
Racer
Joined: Jul 2006
Posts: 355
Likes: 0
From: milpitas ca
carb size
how can u tell what size your cab is? like cfms and stuff? im not sure what kind i got, well i know its an edlelbrock eather thunder series or perfromer series.....heres a few pix thanks for any help
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
It looks like you have an Edelbrock replacement for a Carter AFB carburetor. That style of carb never came on the C3 Corvettes; only Rochester Quadrajets (small blocks and low HP big blocks) and Holleys (high-performance engines) came installed from the factory. I can't tell from your photos, but it looks like someone has put some kind of transition spacer between a stock intake manifold and your Edelbrock carb. If that is true, it is a very bad setup. While setting still [and engine off], push the throttle cable to full open and look down the carb primary bores. If the primary holes in the manifold (under the carb and spacer) are smaller than the bores in the carb, it is probably a stock Q-jet manifold. Your solution would be to find a suitable Q-jet carb or to find the right manifold for your existing carb. If, in fact, the inlet holes in the intake are the same as the carb bore sizes, it is matched properly and should run OK if set up properly.
Thread Starter
Racer
Joined: Jul 2006
Posts: 355
Likes: 0
From: milpitas ca
well i took it to a local chevy dealership to have them replace what ever was wrong with it to begin with and they told me a carb cost like 400bucks with labor....im most probably gonna buy a new intake im thinkin a performer rpm or performer.......but was also thinkin about the torker2
Tech Contributor
Joined: Aug 1999
Posts: 14,380
Likes: 6,390
From: At my Bar drinking and wrenching in Lafayette Colorado
Get the number off the carb - that's the only way to know what you have - you can't tell cfm visually.
Edelbrock 1400, 1405 and 1406 is 600 cfm (most likely)
1403, 1404 is 500 cfm
1411 and 1407 is 750
