Intake Manifold Modification

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May 20, 2025 | 09:39 PM

Vanhartman

Thread Starter

5th Wheeling

Joined: Dec 2023

Posts: 42

Likes: 1

From: Oklahoma City, Oklahoma

Intake Manifold Modification

Looking to push any HP I can out of my 64 292 while keeping it mostly stock. I’m looking to upgrade to four barrels but manifolds used are 300+, has anyone tapped their intake for four barrels in Y block’s specifically? I don’t see why a couple aluminum spacers, milling, and welding wouldn’t take care of the job. Would a fab shop even do that? Would it save me money? Any help or past experience wisdom would be great.

May 21, 2025 | 06:07 PM

ManFordman2

Mountain Pass

Joined: Sep 2021

Posts: 210

Likes: 52

From: Rincon GA

Quote:

Originally Posted by Vanhartman

If you don't want to spend the bucks on the 4Barrel manifold, the next best thing is to put a 500cfm 2barrel on it. Holley has them listed on their site or did the last time I looked. The fab work you mentioned will burn through cash at a fab shop without giving the hp you could have gotten with the 4b.I would buy the manifold instead. I ran a Holley 500 on a Mustang back in the day because it was an easy upgrade. A friend gave me the carb so I had no money in that upgrade.