Originally posted by jsimon1984:
i think maybe a valve is stuck open it spills gas and you have to set the idle incredibly high, normally i idle at 500-550 now it has to idle at like 1200 or some****, motor runs fine, so i think its time for a new carb, im 95% sure its an edelbrock 600 performer. i have a holly intake and a riser/adapter plate that goes between them, what should i do? should i go bigger? stick with the edelbrock 600? i was considering a holley 750 but my mechanic said to get the same one i have, im basically just asking about compatibility and the best bang for my buck. i have a 350 block with an 40 over bore and a 350thm. any advice would be greatly appreciated.
While there is not a lot positive I can say about the eclone, you have one, so if you can make it work, there is less cost involved.
The high idle sounds like it might be a vacuum leak somewhere, especially since you state the engine runs fine. If you have the idle set at 900 RPM, it is entirely possible you would be idling partially on the main circuit, thus fuel would be spilling from the main (primary) discharge nozzles.
Before throwing money at either a rebuild or a different carb, I would highly suggest a wee bit more trouble-shooting.
If it does come to replacing the carb; my best advice would be a stock 350 cast iron intake from about a 1968~1970 350 with the stock Q-Jet from the same engine. Of course, the down-side is that you will have to find something else to buy to use up the money the eclone is requiring for gasoline!
Jon.
