Yes, Running those heads on a 350 demand’s valve notches and even more so on the exh side then if you where running iron heads with 1.77” exh valves.
This is due to the E heads having the exh valve moved over .040” from stock .
My 71 455 2 bbl block was taped for 4 bolt mains and had no valve notches, but I added them.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
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