Hi. Does anybody know what the throttle bore id is on the stock port and street port RB manifolds for holley?

the reason I am asking is because I have a intake manifold and i dont know If its for street ore stock port. The Throttle bore Id meassures 1 1/4 inch.

13b 4 port engine with a edelbrock cfm600

thanks

 

Is there a difference? I thought the only difference was the carburetor that they used with their carb and manifold kit.

How do you plan on recalibrating the Edelbrock carb to work? They aren't as tunable as Holleys. Some significant alterations need to be made to the air bleeds to get a carb made for a plenum manifold to work on a independent runner manifold. This is the bulk of why one really needs to use an RB-modified carb, unless you're a wizard with pin vises and carburetor circuitry.

 

welcome to the board.

i was under the impression that the stock and street port manifolds were the same. i know (according to them) the bridge port manifolds are larger. at any rate, it's probably best just to email them and ask.

 

@peejay I just bought one that was working.. still , I think I need to try another carb, because it keeps flooding over when i drive up and down the steep hills I need a carb rally carb or something. But still, i need a choke.... cold norway..

@diabolical1 thanks ! Iv been out of the rotary game for 20 years , but now I`m back trying to get a reliable steady 13b 4 port NA carby. I talked to RB, street and orignal port are the same on the header.