CarburetorsCarb discussion and questions. Upgrading your Third Gen's carburetor, swapping TBI to carburetor, or TPI to carburetor? Need LG4 or H.O. info? Post it here.
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I have just put a HO 350 in my 86 firebird which used to have a 305. It has an edelbrock intake and carb and edelbrock headers with 3" cat back exhaust. Engine runs great on the highway and when it is cool, however on hot days in the city it will idle from at lights and bog out on take off. I have eliminated a spark issue with new plugs, wire, distributor and a new MSD box. I feel that the heat under the hood is evaporating the fuel either in the carb fuel bowls or in the fuel line that runs above the intake. I am thinking of tracking down a turbo hood with a vent, or a cowl to alow some heat to vent off, just wondering if anyone else has any ideas or have had the same problem.
He would still have to get a cowl hood in order to run a spacer. especiaqlly if it is a 1" spacer. You will run into hitting the hood and not having enough room for an air cleaner without that extra room from a cowl
Originally posted by miller626 No, fuel pump doesn't have a return line.
At the risk of raising the ire of those smarter than I, the Carter M6626 is a 120 GPM mechanical pump with return line. In 100 degree heat with engine temps over 200, no vapor lock or stumbling problems.
And, I should say, factory V6 fuel line routing with the lines routed in front of the crossmember to get them over to the fuel pump. Together, these probably reduce fuel heating issues.
