I have a B&M 162 on a 408. It’s too small. It’s overdriven the most I can get it, makes 4-5 psi. It’s fun in my ‘74 W-200, it really moves out. It’d be even more fun in a car.

So I’m building another 408 with a 671. TBS billet blower, high helix, Teflon stripped. For the cost of the blower alone, had I known they existed for carburetors, I woulda went with a Whipper screw blower for a couple thousand more.