offy Intake Ebay
Thread Starter
|
Lead Driver
Joined: Jan 2006
Posts: 8,423
Likes: 0
From: Colonsay Sk. Canada
offy Intake Ebay
Wondering whats your thoughts on this how high should I go would it be a good one for my 390 build that Im not really planning to race but I still want some (show horsepower)
Ford 390 410 427 428 Offy 360* Intake Manifold - (eBay.ca item 290298312074 end time 01-Mar-09 19:52:05 EST)
Ford 390 410 427 428 Offy 360* Intake Manifold - (eBay.ca item 290298312074 end time 01-Mar-09 19:52:05 EST)
Freshman User
Joined: Nov 2008
Posts: 28
Likes: 0
The picture is showing a dual plane. That sounds right for your application. I have an offy, single plane Port O Sonic which I am going to use on my 428. I wouldn't bid much over $200.
I don't know anything about that manifold but I'm planning on port matching my manifold because it is tiny compared to my heads.
I don't know anything about that manifold but I'm planning on port matching my manifold because it is tiny compared to my heads.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Does anyone else think that intake was milled at the intake ports? Either that, or Offy did some weird castings. Look at the forward edge of the intake, near the intake ports and see how the casting comes to a pretty sharp edge?
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
The picture is showing a dual plane. That sounds right for your application. I have an offy, single plane Port O Sonic which I am going to use on my 428. I wouldn't bid much over $200.
I don't know anything about that manifold but I'm planning on port matching my manifold because it is tiny compared to my heads.
I don't know anything about that manifold but I'm planning on port matching my manifold because it is tiny compared to my heads.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Trending Topics
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
On second thought, it does look weird - like one complete bank of cylinders is on one side of the intake, all connected together, while the other side is separate.
The FE doesn't fire bank-to-bank evenly, so that would be a weirdo thing.
The FE doesn't fire bank-to-bank evenly, so that would be a weirdo thing.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Single and dual plane has nothing to do with the plenum. To be a dual plane manifold requires that runner cross over each other. Two distinct levels. This is a single plane, one level. It also has to do with which cylinders are tied together, the reason for a dual plane manifold and on the FE the bad cylinders to tie together are #7 and #8 as they fire one after the other. With a dual plane #7 and #8 are on separate sides of the carb (plenum if you prefer). With this manifold they are on the same side which quite often leads to a lean condition on #8.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
The confusion here is the separator running down the middle. Looks like a "dual plane" but the wrong cylinders are tied together.
For instance, cylinders 1-4 are on one plane, 5-8 on the other.
That's one dang weird setup.
For instance, cylinders 1-4 are on one plane, 5-8 on the other.
That's one dang weird setup.
Posting Guru
Joined: Dec 2004
Posts: 1,474
Likes: 5
From: Shasta Lake, Ca.
That is a Split Plane ( Single plane ) It is split by Left bank and right back for a reverse rotation Marine FE. I have work with a few of these and there good for a engine that works at one small range of rpm constantly. Marine engine work all the time while Automotive engine coast a lot. Do Not Run this on a car or truck, You be wishing for a new enegine by the end of the day running this intake
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
That is a Split Plane ( Single plane ) It is split by Left bank and right back for a reverse rotation Marine FE. I have work with a few of these and there good for a engine that works at one small range of rpm constantly. Marine engine work all the time while Automotive engine coast a lot. Do Not Run this on a car or truck, You be wishing for a new enegine by the end of the day running this intake
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
manifold
Good eye Art, it does look like it has had the bejeebers milled off the sides. I wouldn't pay more than 20 $ for it. I've seen these tested, and wondered what they were for. The marine idea makes sense, 'cause they didn't do well at all in the tests I read. DinosaurFan