What are the odds that they come from the same foundry?
i would say 0%.
TA Performance casts their own heads, have been as long as they've offered aluminums for sale. they derive their Stage 2 head from the original Buick Stage 2 blueprints but they've made some modifications.
Edelbrock has had to make some changes in the upper geometries to get the Chevy rocker assemblies to fit. and doesn't Edelbrock do all of their own casting work?
something to think about, if you go with the Edelbrock i'm sure there will be Beehive valve springs that will plop right in there. really nice if you want high spring rates and/or to turn a lot of rpm.
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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