If you already own the 750DP, bolt it on and don't look back! The carb will always tell you if it is too big, by the way it can't be tuned, or is hard to tune for low-speed operation
I have run that bad boy on my 367 with a 230*, a 223*, and a 249* cam. With a 3.55,a 4.88 and a 2.76 and just about everything in between but always with about a 8.5 or better DCr. I also tried an AVS, a TQ,a 600 and a 750 vacuum secondary carb. I like the 750DP best, and it's been on there now since about 2004,so 10 years, and it's staying on there. Fuel consumption be hanged.
I agree with rumble as to timing. I ran a less initial (14*), cuz with 3.55s and a 2.66 low, things get a little jumpy down at 600rpm. To compensate. I ran a 22* Vcan, bringing it in as fast as she'll take it. I have since, switched to a 3.09low gear. I left the timing alone cuz it's just soo sweet, to idle around at 600.
Yeah so don't look back!
