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Offenhauser 4bbl manifold front wiew
 revhead001  2008/6/14 8:19  Tell a friend
 1956  2  0.00 (0 votes)
| If you look closely you will see a divider to seperate the primary from the secondarys. Bottom is primary and has approx 30% of the volume. Theory goes that when you are driving on the primarys throttle response will be increased as only the lower 30% of the manifold will be used until the secondaries open. |
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| CrazyHawaiian |
Posted: 2012/12/20 2:24 Updated: 2012/12/20 2:24 |
Just can't stay away   Joined: 2012/8/29 From: San Diego,California Posts: 116 |
 Re: Offenhauser 4bbl manifold front wiew I used a Offenhauser once...once ,I thought my stock manifold made more power .My friend ran one.... and I always beat him by a car length...Bazinga!
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| ddgonzal |
Posted: 2012/12/20 7:21 Updated: 2012/12/20 7:22 |
Moderator   Joined: 2001/5/3 From: 48 North Posts: 31575 |
Re: Offenhauser 4bbl manifold front wiew A dual-plane manifold like this will never make top HP, that's what single-planes are for.
But a dual-plane can have a better torque curve, and make more HP at part throttle. Also the carburetor needs to be setup right.
How did you run a 4-bbl carb on your stock manifold? Adapter plate?
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