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Oh and I am suprised no one has said .... this whole topic is a sales pitch for Edelbrock carbs 

Check very closely for hairline crack at the pump cover where the arm and pin is.
I have seen a tiny crack there and it opens up a tiny bit with throttle.

I've also seen trash in the pump cover screw holes that give a false torque.

I use fiber fuel bowl screws, I just rub vaseline into the paper and they seem pretty good to go. I'm not a fan of nylon gaskets.

Anything you need from me just ask, I'm around

I got the kit from AFS with the paper bowl gaskets, I also got a new genuine Holley accelerator pump cover.  My GT 500 not concourse and I don't see a SAAC judge judging my to see if my accelerator pump cover is spec.  As an aside I  really like the content and knowledge of that guy over at AFS.  He hit a niche that no other guys I have seen hit. 60's Holleys.....

Here's hoping...



and the right screws(it has aftermarket hex style on now)

 

Solid advice here gents. 

I am never a fan of those nylon washers.  I do torque all the screws down to appropriate torque and did not over tighten.  I will try new bowl screws and new gaskets and maybe a dab of black rtv around washers and make it unnoticeable.  I am at the point with this thing of just throwing on my 750 DP and making a museum piece of the old 735. I even have an old 735 core with the lemans bowls.  A ultrasound cleaning and throw that on the DP.

Saw in the valleys of the intake...the dreaded fuel leak from the from bowl\accelerator pump.  Rebuilt with kit from Holley. Not a cheap Chinese kit.  Looked at accelerator pump cover for flatness and gently sanded completely flat...which usually works.  Rebuilt carb and around the gasket leaking worse and even began to leak when the pump was activated.  I took off car and as a stop gap, put black RTV around acc pump housing and that did fix the squirting around gasket upon throttle.  Looked this am after I brought car up to temp and looked for leaks. Actually sat there and watched for leaks...none. Only happens when the car comes up to temp and then cools down. Primary bowl emptying out.  I felt this am and wet around acc pump again and I think at metering block.  About to order a kits from Air Fuel Spark. and try this all over again.  I have been doing Holley rebuilds for 40 years and this carb giving me fits.  I am afraid either the body or bowl has a warpage in it. Anybody else have this problem after a rebuild?

Looking for a set of 1968 Shelby Kelsey Hayes Steel Wheels 15 X 6

email: lwg8tr@gmail.com

VIN: 8T02S143541

Selling my 68 GT 500....matching everything and full docs with SAAC.  Be willing to entertain trades.  Trying to stay north of 200k. 

email me for more info lwg8tr@gmail.com ....but prefer to talk on phone if you are not just kicking tires dreaming. 561.236.8017



Car #1683