Quote:

I mean 7 tenths. 3.9 V6 in a Dakota. Same exact specs, cam, heads, intake everything except the shortblocks. The first one was not honed with a plate. The second one was and it picked up 7 tenths and became incredibly consistent where before it wasn't. YMMV



There had to be other things. I can't believe that a simple torque plate hone would result in ~3/4 of a second gain.
Something else had to be off in the first shortblock.

1969 Dodge Super Bee A12 (440 Six Pack, 4-speed, Dana 60 4.10)

1972 Plymouth Road Runner (400, 4-speed, 8.75" 3.23)

1974 Plymouth Duster 360 (360, 4-speed, 8.75" 3.23)