340 street build help from experienced input

Crap... valve springs by PAC. 1.800 height installed.
I forget the part number. Sorry about that. But it’ll be easy enough to look up for yourself.

With the 3.55’s and a 27 inch tire, that thing will have long legs and pull far. You’ll have a really good top end. It’ll just take a little bit to get there. The cylinder head being very good will extend the rpm range of the cam a little bit.