Thread: converting from holley to edelbrock

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thanx, ill try that first.

sounds like you've blown your power valve in your carb- Holley I think you said- is famous for this, and is an easy fix.
I agree with shine also, after you do fix the carb it will take some running to get the carbon out of it.
Also your running a pretty high lift cam for a 10:1 CR, and I use rule of thumb ( cid x top rpm devided by 3456 = carb. cfm ) for a starter carb size.
your vac. is a little low, check for leaks & check your timing.
I had the same trouble with a Crane 292- I set the timing it would backfire & blow the power valve, not enough compression at 10 1/2:1 for the fuel to support the lift. Stepped down a step on the cam, went to a smaller carb & increased my performance a LOT!! Went from a bogger to a tire fryer.
Now it would run with the 292 if I retarded it to the stone age- but it left me with very low vac. & tended to run hot & performance was poor, because of the timing placement. Where if I had of run a higher compression build I could have run the higher lift & lopey cams, but I didn't & I didn't want to spend the money again on the same engine build for an everyday driver.
Did you follow me on that one ?
You still can't tuna fish with a pickle fork..lol.

ya, i get what your saying. I am a rookie to all of this so i am learning myself. The engine to me seems to rocket, but then again this is my first hot rod and have only had this cam in it.
I have checked for all the leaks and still havent found anything, so i dont think its that, but i do think it has to do with the cam. I havent had the thing back fire on me once, so thats a good thing.

Thanx for the info and somethings to roll around in my mind.

thanx

also, ive been through like 3 differant power valves while adjusting and still go the same result, so im trying to eliminate that as a problem.