offy Intake Ebay
Senior User
Joined: Nov 2005
Posts: 176
Likes: 0
I have found a handy little diagrahm on marine 427 stuff. Here's the link:
http://img.photobucket.com/albums/v4...27valveadj.jpg
Kinda interesting stuff on chris craft engine specs!
http://img.photobucket.com/albums/v4...27valveadj.jpg
Kinda interesting stuff on chris craft engine specs!
Posting Guru
Joined: Dec 2004
Posts: 1,474
Likes: 5
From: Shasta Lake, Ca.
Old marine specs are hard to find, Olny reason I know is I grew up working on them, Parents own a large marine back east. And I had a Pair in a 40ft Chriss craft cruiser. Reverse rotation is good for boats with 2 engines as it counters torque steer
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
I have found a handy little diagrahm on marine 427 stuff. Here's the link:
http://img.photobucket.com/albums/v4...27valveadj.jpg
Kinda interesting stuff on chris craft engine specs!
http://img.photobucket.com/albums/v4...27valveadj.jpg
Kinda interesting stuff on chris craft engine specs!
Doesn't clear up why that intake is a dual-plenum with each plenum service one complete bank. The firing order for the "right hand" rotation engines are still not side-to-side.
Guess it doesn't matter on an engine that's going to sit at one RPM for long periods of time like a boat motor.
Senior User
Joined: Jan 2002
Posts: 438
Likes: 0
From: Centreville USA
I have an Offy single-plane intake on the 390 in my 64 Galaxie. I have a 625 cfm Road Demon carb on a 1/2 inch, 4-hole spacer with an RV cam. The beast has great low end torque and throttle response. The 3-on-the-tree manual and 3.00:1 rear axle are what slow her down. Punch the throttle in second gear at about 1000 rpm and she will pin you in the seat.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
I have the exact same intake on the 390 in my 64 Galaxie. I have a 625 cfm Road Demon carb on a 1/2 inch, 4-hole spacer with an RV cam. The beast has great low end torque and throttle response. The 3-on-the-tree manual and 3.00:1 rear axle are what slow her down. Punch the throttle in second gear at about 1000 rpm and she will pin you in the seat.
Senior User
Joined: Jan 2002
Posts: 438
Likes: 0
From: Centreville USA
Since you know nothing about my car and have never driven it, on this subject I can truthfully say you are totally ignorant. And that hasn't changed either.
Buh-bye.
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Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
I've been away for awhile because I got fed up listening to the rantings of people like you. I see nothing has changed. You are completely incapable of responding in a civil manner to someone who disagrees with you.
Since you know nothing about my car and have never driven it, on this subject I can truthfully say you are totally ignorant. And that hasn't changed either.
Buh-bye.
Since you know nothing about my car and have never driven it, on this subject I can truthfully say you are totally ignorant. And that hasn't changed either.
Buh-bye.
You are the one making claims without any proof other than your rear end. Which I wasn't aware of being a precision instrument for measuring anything except you bad attitude. Your posting of non-factual and unlikely info is an example of why there is so much wrong info floating around on the net.
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
To be fair, Bear didn't say anything wrong in his first reply to you. You do NOT know the difference between single and dual plane intakes if you've never tried them both on the same vehicle and engine.
On the other hand, Bear's second reply left something to be desired in the insult department.
Keep it nicey-nice
On the other hand, Bear's second reply left something to be desired in the insult department.
Keep it nicey-nice
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
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