I dropped a B20E into my 1967 220 back in Nov 2007.

Nearly ALL of the exhaust and intake setups are compatible. ANY combo manifold should work - assuming you don't have the secondary manifold butterflies.

I have a double downpipe exhaust from a B20E on my 68 Sedan's B18B right now with an aluminum intake. Fit fine. I had a B18 combo manifold bolted to my B20 head as well. Also fit fine.

You will notice that the intake "rings" on the B18 will be missing from the B20 Head. No problems. You might need to rustle-up a double exhaust downpipe to complete the setup, but other than that you are sitting good.

The B18 dizzy will work fine on the B20 motor. Did that too to keep my electronic ignition.

Other parts... just about everything but the head and the PCV system (oil breather box is different diameter and the valve is different) The rest just bolts right up. Water pump, pulleys, timing cover, rear seal, etc. Having the alternator "ear" on the B20 block will also be very nice for you.

Different head gaskets (of course) as well as a slight difference in the intake manifold gasket. There's a little button on the B20 that the B18 did not have.


The only exception *might* be if you had one of the later model Metric B20s. I think those were 1975 only. Someone will probably clarify.

Let me know if you have any specific issues.