Tom, I really dont know which cam is in it...engine had been installed by PO, I merely changed heads...the engine was out of a 72 , it was rebuilt...had 7J2 heads...I replaced with 5C heads from a 75, had milled to around 88-90 CC to get +-9.2- 9.3 CR...she gets out of the hole pretty well...but not as well as some of my other fgf friends with big 455s etc, LS1s...but it gets me to the destination ,usually quicker than them anyway ,as when you drive on the roads (I like cruising) the initial out of the hole doesnt matter , only how you get yourself thru traffic or how you drive on the highway...
an overdrive would certainly save some gas....(I added one in my TR6 as it was 3300 rpms at 70....but I found a great J-type OD tranny for it for $800)...if you find a good OD tranny for not too myuch money ,go for it...I just try to figure out how much you drive, how much gas you use, vs how much gas you save , what it costs you...then is it worth it , and how many years payback....if you save 5 mpg , spend $2000..it may take awhile to pay for it....thats how I look at it...so far 14 mpg does well for me...I drive 3 to 4 k miles /year
and yes a 4v, a Holley 650