340 Street Build

that'll be a little lopey for a 340 street car, but you've got a 4spd to back it up and with those current SCR numbers i'd say the compression as well.

personally, i'd tear it down and see what cam it has and make a determination from there. if you have a stock cam, that's a big jump. if you have say, a 268 then not so much.

anyway, once you've got it apart you can see where the pistons are at in the hole, then CC your heads and determine the direction you want to go.
The car was running when I bought it. If it's a stock cam it may be something like maybe a 262 or 268 adv duration cam. It did have some lope to it but nothing like the 280H Comp Cam I had in the SBC 350. Didn't think about CCing the new ProMaxx heads. Hopefully will find some cam info and possibly piston manufacturer and number on the pistons when I get in there.