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Old 08-16-2006, 11:30 AM
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Trimming Carb Base Gasket

Continuation of Edelbrock 1400 Performer Tuning challenge. Just finished cleaning & installing rebuild kit in nearly new 1400 carb. I noticed that the kit had a new thin base gasket with it that has a larger inner bore area. We are using the thick heat shield base gasket on a performer manifold. The thicker base gasket partially obstructs airflow to the front and rear (PCV valve port & brake booster port) along with a smaller machined artery on the forward passenger side of the carb. Anyone know a reason that I shouldn't trim the gasket to allow for unobstructed airflow to those machined arteries?

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Old 09-03-2006, 12:52 PM
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sounds alright to me id try it
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Old 09-03-2006, 02:28 PM
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I have 2 new 1404s on a Edelbrock street tunnel ram on my 396 powered T-Bucket. I just finished the nightmare of tuning these POS and they now, run fine. Let me know if you have any trouble (LOL)and I will let you know what I did to make them work.

Also, I would match the Edelbrock gasket exactly. These things are very sensitive to everything you do. You might wet the gasket slightly and then install the carb. It should leave you with a perfect templet.

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Originally Posted by maverick19642001
Continuation of Edelbrock 1400 Performer Tuning challenge. Just finished cleaning & installing rebuild kit in nearly new 1400 carb. I noticed that the kit had a new thin base gasket with it that has a larger inner bore area. We are using the thick heat shield base gasket on a performer manifold. The thicker base gasket partially obstructs airflow to the front and rear (PCV valve port & brake booster port) along with a smaller machined artery on the forward passenger side of the carb. Anyone know a reason that I shouldn't trim the gasket to allow for unobstructed airflow to those machined arteries?
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Old 09-03-2006, 02:35 PM
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tuning 1 is pretty easy i think, 2 is a different story
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Old 09-03-2006, 10:47 PM
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I bought the car knowing I would have to work out the problems of a newly built Hot Rod, built by a guy that did great body and paint work. His problem was engines. Once I figured out that the carbs wouldn't work with less than 7 inches of vacuum, I changed the cam to a 270 deg Crane from a 305 deg Comp on the 396 Chevy and started woking on the jets. It immediately went lean with the vacuum so I had to go up to the largest jet and rod combo for this carb. Then I finished with the silver springs.
It runs good, still a little lean but not melting the headers like it was.

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tuning 1 is pretty easy i think, 2 is a different story
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