Inliners International Forums General Discussion Vortec 4200 4200 parts - whats needed to help folks use this

I have agree that in stock form the early engines are a bit lacking in the low end torque dept. One thing these engines are begging for is a set of small diameter (like 1 1/8 or 1 1/4") x 36" (38"?) primary tube headers and on the early engines port the exhaust port its so darn restrictive. The headers will really help the bottom end.

If your handy with a welder there is a place on the web that sells exhaust head flanges for the 4200. A '54 should have lots of room for headers.

On the hwy in OD this engine is really good on fuel.