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Thanks to everyone for the input! I think I will give the 3:55's a shot (it helps that I have a set already)! :-)

Will probably be running a 26" tall tire for both street and strip. Would like to keep shift points pretty low (5200-5400). Looks like 3.55's with a 26" tire would be about 2980 rpm @ 65 mph (about where I would like to be).

Aldo, do you think a 741 case will hold up OK?

I'm putting together a street/strip '71 Demon, will be running a slightly warmed over 318 and a 4 speed. Approx. 26" tall drag radials, 8 3/4 posi. Should I run with 3:55 or 3:91 gears? Thanks in advance!

Was told by Rob at Midwest that Hughes would do nothing since they are race parts. I was at my local machine shop when the springs were tested, none were the same pressure out of 5 springs tested (and all way too low of pressure).

I think some of the Hughes stuff is OK, I do have a set of their rockers, much better than the Pro Comps. I would not recommend their valves or springs, even to run on a farm truck.

Just a warning, do not conduct business with Rob at Midwest Performance Products in Diller Nebraska. He sells questionable quality parts, does not stand behind his work or the parts he sells. The Pro Comp CNC castings are pretty nice, the valves, springs etc. he installed are JUNK! The springs...

Has anyone run the Procomp aluminum big block heads? The CNC ported ones look to have pretty decent flow numbers.