Not a racer but asking a cam question.

rumblefish360 said
3.73 X .70 = 2.6— final drive ratio.
255/60-14 or 15 inch wheels?

I would look at cams no larger than 220 @.050. Plus 10* for a solid flat tappet cam at max.

I agree with rumblefish. Are you looking for a hydraulic flat tappet or mechanical? Roller?

Something like this could work Voodoo Hydraulic Flat Tappet Cam - Chrysler 273-360 262/268 - Lunati Power
or this if you can go a bit more exotic.. Voodoo Retro-Fit Hydraulic Roller Cam - Chrysler 273-360 270/279 - Lunati Power

Garth