Daughter needs Gas mileage from 273 commando

one mile said

Rumblefish360 F.Y.I. - Not just because I have one, but the Offenhauser 360 split plane Intake is the best Intake I have ever used for bottom end torque. I bought it for this car but bolt angle was a problem for me.(found this out later) "Wallowing" out the bolt holes to make it fit was not an option for me. I was into offroad heavily years ago (still love it) and it was THE Intake to have along with a offroad Cam and Kit on ANYTHING you wanted torque low down. you can tell Seat of the pants difference with intake only change. Hope that helps, Tim
:D

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Are you referring to the Offy dual-port dual-plane intake where the top of the ports are split from the bottom. That is great for low end and fuel economy. It 's a little restrictive to flow above 5000, because the split port takes away some of the area of the ports, but it works great below 5000 rpm. It would be great for a car where you don't want the daughter to hot rod. (built in restrictor without a restrictor plate...)


I found out about these from an old guy that had one on a 76 Volare station wagon with a 360 4 speed, .484 lift Worshowski's cam, rhoades lifters, and the Offy dual-port dual-plane who claimed he got 23 MPG with this set up. It's a good street intake. I still have one or two of them around here...