Torque Converter? Where am I at? What is compromised?

A TA “tight” 10” would be a pretty good compromise converter for the OP’s combo.

I’d expect it to have a true flash stall of 3500-3700 behind his 512.

Next step up would be something like a tight custom 9.5” from PTC or UCC, but frankly....... those might end up being a little loose for the OP’s [email protected] cam.

Agree my 3500 stalls quite a bit higher than 3500--
I called one of the big convertor guys about my car, told him all of the details of it , he said it would take $975 to custom build me one , but , that my convertor sounded pretty close to what I need, when I picked it out , I matched it to the cam, read later that he sold out to an employee-----I `d hate to have to pull the trans at my age , spend the $ and not get much out of it . Laying on a concrete floor at my age aint much fun anymore ! lol