Match Race '67' Dart 273 Commando vs. Rambler American 290

Cudavert,

That Carter #4252 AFB is correct,,,,,,,625 CFM

1 7/16" Primary x 1 11/16" Secondary........with 1.062" x 1.562" Venturi Sizes

It had 'one-size' smaller jets installed at the Factory, but still a 'Thirsty Rambler'.
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Also, the Cast Iron Dual-Plane Medium-Riser Intake Manifold

Had a good Runner Port Design, but was one heavy bastard.