I ran several cams through Desktop Dyno 2000 and it looks like the Comp Cams XM270H-12 is the one I'd pick based on the horsepower and torque numbers. This cam made 447 hp@5000 and 521ft.lbs@3500. The torque curve is very nice with 499@2000, 521@3500, and 469@5000. Let me know if you'd like all the profiles I ran. Dave

Just curious crazyhorse, when entering cam data into the dyno 2000 do you just enter the opening and closing points of the valves or do you enter a cam "file". If it is the "file", where do you get the file?

Dave

Dave. that is crazy the @ 5000 numbers are EXACTLY the same as mine on DD2000 and the others are Real close. Rag's

Rags, I think it's a conspiracy by the guys that were on the grassy knoll,,,,,
B.T., I enter the timing events. The cam files have several cams but unless you've got the catalogs right in front of you it's hard to tell what they're applications are. The actual numbers aren't as important to me as the ability to compare cams and the power/torque curves.

Crazyhorse,

Is that the Extreme Marine Cam. It might be just what I'm looking for. What are the results with the stock 502 Mag cam? I'd like to know just for comparison.

Thanks, Doug

With that kinda hp, You guys should let me build ya a small block Then we'll mke soooome HP

You can call tyler crockett. We called him for my dads 502 and he decides which one is best then has cam motion camshafts custom grind it.

Last chance for a small block build

yes, I think that's it. the grind number is XM 270H-12 and the part number is 11-236-4.

Crazy,

I checked the comp cams website and put in that part#. It is the Extreme Marine cam.

They have a couple and I ran both of them through DD.

I have dd 2000 as well Crazyhorse but am not real familiar with it yet. What do you use for exhaust typically? It makes a huge difference on the outcome. With my combo, when it change the exhaust from stock to small tube headers (going to KEs this winter) I get a jump of 125hp and over 100ft-lbs torque. Seems optimistic, but I like the answer. What do you think?

Dave