#'s Matching 340 build

Stock x head 408 builds are on here.
Search.Iirr 375-425hp/440-460lbs done by mid 5500rpm was the trend, some ported , but no numbers or volumes to verify to what extent.

Streetable , strong vacuum, with limited rpm and restricted exhaust is shirt lived fun without a 4-5 speed auto.

Ever drive a 1975 455 trans am ?
That is a GREAT example of how short lived the fun is.
Either do the work to the heads. or stay in 3.31-3.58 stroke imo cause it's one thing to battle the heads.. But then to battle the exhaust.
If it were not limit by $$$$, but it is.