Offenhauser single plane SB 360

If the intake has the 340/360 size ports, it may not work the best. The smaller intake ports in the heads will act as a restriction. Normally, it works ok. Chrysler did it from the factory on the 318 and they worked good. But I think the smaller 273 might not work as well. That is IF the intake has the larger ports. Without pictures and of measurements, it's hard to tell.