Originally Posted by Diplomat360
I would recommend something less than 230 dur @0.050".

Here is why:
1) you want good vacum for PB
2) you want a bit of a lumpy idle, but not overdo it

I used to run this Crower Compu-Pro 282HDP in a SB 360 motor. With 3.55 gearing and 9.5:1 CR it was a blast, loved the street manners, no complaints. The car still pulled pretty good vacum, I think about 12-14" if I remember (it was a good 20 yrs ago).

I stepped up to a Hughes Engines HE3844AL (238/244 @0.050" on 108LSA) on my last build. That cam really needed a 4k converter in a heavy car like mine. It is pretty rumpy alright, but only pulls 7" of vacum, the throttle response suffers. Now, the car overall combo is very different than when the Crower was in. I am running a 4.10 gear now for one and 10.5:1 CR.

So while I throughly enjoy my current setup, given what you stated as your goals and focus I would recommend you watch the duration @0.050".


I have that 282 HDP sitting on the shelf. I have the smaller 271 HDP in a similar combo 360 that ran a 12.8 @ 105.5 mph. Did you ever run that combo at the track?

The 271 would be too small in a 440 with what the OP was looking for in my view.

Hysteric


Last edited by hysteric; 02/16/20 11:24 PM.