Originally Posted by Sniper
Originally Posted by RoadRunnerLuva
Back in the late '80's...I had the "677" MP cam in my 440 powered '69 300 'vert.
Stock block/heads, just a three angle valve job, and fresh valve train. 10.1 comp. and headers.
We used a reconditioned CH4B intake, with a Holley 650. Engine ran out of steam at 4,500ish RPM.

A few months later, we swapped out to the .509 cam, installed at .104 degrees, and a new 3310 750 Holley.
What a huge night and day difference the way that car ran. With that combo (and a 3.91 sure grip)...
It ran 14 teens -low 20's @99mph in the quarter mile..on street tires and full 2-1/2" exhaust.
Won a few street races as well, including against a new (at the time) turbo T type Buick Regal.
Mr. Regal was shocked and saddened that a "big boat" had kicked his ass! laugh2


You changed at least two things, the cam and the carb. Any idea what made the biggest difference?


I would say they both made a big difference, but that .509 cam was perfect, for that combo.
If that same combo was in an A body, it would have been a high 11 second car...IMO.

Plymouth Makes It!