Quote:

My personal experience has been the 4150 w/4500 adapt. always performed better than the 4500 manifold.

Did direct in-car comparisons on a 440 Challenger street car and a S/C dragster with a 500" Stage 6 headed motor.

No dyno numbers, sorry




Good info!! Any others?

72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.