One of the other 454 4-bolt engines with small plugs that I had was a Volvo Penta high perf engine that Volvo bought for evaluation. According to the technician that I bought it from, they ordered ten 1971 street version LS-6 engines with forged everything. This is what was on the crate when I picked it up.
It had a 14015445 block, 3967416 crank, 3999295 pistons, 14096188 heads, 6269318 intake (like a #163 with brass water channels)
