The block has oval coolant ports and two bumps between the middle cyl.
the block is definitely 74 or newer.
http://www.buickperformance.com/idblock.htm
I have no valve or rockers,
may as well get Stage 1 valves and have the heads cut for them if the seats aren't large enough.
http://www.buickperformance.com/455hdcompare.htm
don't know that anybody has actually tabulated the piston casting numbers but here's an article comparing them:
http://www.buickperformance.com/pistons.htm
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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