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Old March 9th, 2022, 05:37 PM
James James is offline
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Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
Age: 69
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Default Re: Holley Sniper 2300

Quote:
Originally Posted by Gwhizzard View Post
Prowbar.. I personally have not flow tested or tried to improve the intake yet... but i have read alot of the 4 barrel carb mods and the one thing they do is soften the turns up inside of the intake to make it smoother transition. There are a few on 67-72 and jalopy journal of people modding these intakes. if they are still out there.
This is what I had done to my intake ports and the carb flange on the intake manifold:

On the carb flange picture, I was almost done, just wanted to show how much metal was removed.

On the ports, I left a small section of the runner divider to hold the gasket in place and so I would be able to install any small port heads without issue. Did not make the port any larger, just remove the divider.

This manifold now flow very well with the Holley 2 barrels.

It took a lot of work and patient to get it there. Engine run better too. Want to pull harder.
Attached Images
File Type: jpg Carb flang mods in progress.jpg (4.81 MB, Multiple views, 17 clicks)
File Type: jpg Intake ports with most of runner divider removed.jpg (4.39 MB, Multiple views, 17 clicks)
File Type: jpg Flow testing manifold with carb.jpg (4.32 MB, Multiple views, 17 clicks)
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