Dennis;
I have basically the setup you are talking about except I up graded to a “big block” 251 CI Desoto engine. I have installed a reground cam from Earl Edgerton. 260 degrees duration @ .410” lift both intake and exhaust. Dual Carter B&B carburetors and a split exhaust manifold. This combination is coupled to a T-5 five speed over drive transmission from an S-10. I have installed a 3.55/1 differential from a Dodge Charger. My engine is fresh and has about 10 hours run time on a test bench. I hope to have this car (1948 Plymouth) on the road this spring. I anticipate my 65 MPG cruising RPM to be about 2000 with 215-75R 15 tires. And I should have gobs of low end torque. I know people who will turn these flat 6’s in excess of five grand for short time periods. But I don’t think they would hold up long at this speed. I have posted lots of pictures at the following URL.
http://photo.starblvd.net/DonCoatney?st=album&pg=0 Don Coatney
