Dual Plane vs Single Plane
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Cross-Country
Joined: Feb 2007
Posts: 56
Likes: 7
From: Iowa
Dual Plane vs Single Plane
Hello everyone, I am looking for some opinions/advice here. I am building a daily driver 351W, basic rebuild, torque cam, factory exhaust manifolds, upgrading to an Edelbrock 1405 (600 cfm). Running a 3 speed automatic and 3.23 rear gears. Built mainly for driving, hauling stuff and pulling the occasional trailer, nothing to taxing.
My issue is an intake, I originally thought I had located a cast iron 4V manifold that I was going to use, but that fell through. I am now looking at aluminums. One is a dual plane (Power+Plus Typhoon) the other is a single plane (Offenhauser 360 degree equaflow - I know this is a hybrid, but essentially a single plane). They are priced relatively equally and I can get them before the weekend.
I have always thought and read that a dual plane is the best choice for streetability and low-end torque, while a single plane is mainly for racing and high-end power. But in the reading I have found on this site it would seem most folks choose a single plane.... This is my first SBF rebuild so I was wondering if there was something that made the SBF work better with a single plane.
Any thoughts or advice is appreciated.. I am picking up one of the manifolds on Thursday afternoon.
Thanks
My issue is an intake, I originally thought I had located a cast iron 4V manifold that I was going to use, but that fell through. I am now looking at aluminums. One is a dual plane (Power+Plus Typhoon) the other is a single plane (Offenhauser 360 degree equaflow - I know this is a hybrid, but essentially a single plane). They are priced relatively equally and I can get them before the weekend.
I have always thought and read that a dual plane is the best choice for streetability and low-end torque, while a single plane is mainly for racing and high-end power. But in the reading I have found on this site it would seem most folks choose a single plane.... This is my first SBF rebuild so I was wondering if there was something that made the SBF work better with a single plane.
Any thoughts or advice is appreciated.. I am picking up one of the manifolds on Thursday afternoon.
Thanks
Junior User
Joined: Jun 2010
Posts: 86
Likes: 0
From: South Jersey
i've never heard of power+plus.. but offenhauser has a great reputation and great (but expensive) parts.. i would suggest sticking with well known aftermarket parts and go with the offy.
as for single vs dual plane, i prefer to run singles on any motor i build (whether for a customer or personal). it basically breaks down to personal preference and your overall expectations of your motor.. i've heard several people say they get more bang for the buck with their dual plane when towing, but i have no complaints about hauling with my single planes..
it all depends on who you talk to.. motor combo.. etc etc
as for single vs dual plane, i prefer to run singles on any motor i build (whether for a customer or personal). it basically breaks down to personal preference and your overall expectations of your motor.. i've heard several people say they get more bang for the buck with their dual plane when towing, but i have no complaints about hauling with my single planes..
it all depends on who you talk to.. motor combo.. etc etc
Postmaster
Joined: Mar 2005
Posts: 2,949
Likes: 6
From: Earth
The Typhoon is a Performer RPM knockoff. Other than the fact the finish on Chinese made knockoff parts is usually pretty lousy, that design (or a Weiand Stealth manifold) is about is as good as it gets for trucks.
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