I’m still waiting to see a picture of what Jim Carter offers but I split mine using a heavy wall 90 degree steel elbow with a steel flange and fit it up for a welder who knew what to do with it. It turned out like
this. I.M.O. retaining the heatbox by using a split stock manifold, Fentons with built in heat riser, or the Corvette cast dual are the way to go for the best driveability and sound.
Grinding or machining the manifolds usually is only required when using an Offenhauser intake with Fenton headers to eliminate interference and should never be required with a stock intake. If you decide to go with the repop Fenton headers a heat kit will give some warmth to the manifold but I believe direct contact is best. No matter how you split it you’ll love the sound.
Curt B.
