Intake Manifold
Senior User
Joined: Nov 2010
Posts: 165
Likes: 0
From: Lincoln, Ca
IMO - Go with Edlebrock site
Hey There, I would go to the Edlebrock site to figure out what you need. Since they manufacture the product, in my opinion, they would be the best source for fittment.
Since the 21811 is for a 351 and you say it's a 78, when I looked at the Edlebrock site, it looks like you could go:
Ford 351 Windsor V8
PERFORMER 351W EGR (idle-5500 rpm)
Designed for street Ford 351-Windsors with EGR.
Edlebrock #3781
Found at: Edelbrock.com - Manifolds - Ford - Performer - 289/302/351W
Just look for your desired manifold according to how you will use it, then match what you have (engine/carberator) and you should find the right part.
Joe
Since the 21811 is for a 351 and you say it's a 78, when I looked at the Edlebrock site, it looks like you could go:
Ford 351 Windsor V8
PERFORMER 351W EGR (idle-5500 rpm)
Designed for street Ford 351-Windsors with EGR.
Edlebrock #3781
Found at: Edelbrock.com - Manifolds - Ford - Performer - 289/302/351W
Just look for your desired manifold according to how you will use it, then match what you have (engine/carberator) and you should find the right part.
Joe
Posting Guru
Joined: Sep 2008
Posts: 2,379
Likes: 2
ys, seriously call Edelbrock! I actually ordered pistons for my 351W rebuild from Summit. The web site said +6.5 for piston top volume when it was actually +16. Just changing that number alone took me from a 9.7:1 compression ratio to 8.8:1. Point being, you want to be 100% sure and go to the source
