Questions about Big Block Chevy Tall Deck Engines

[Dave Williams]

-> The 366 heads were terrible from a flow standpoint.

 Back in the '60s or early '70s, before Chevy started coming out with
over-the-counter race-only big block stuff, Reher-Morrison used 366
heads on their 500 inch drag motors.  The stock heads did flow badly,
but RH said there was so much extra metal in the port walls they were
able to grind nicely flowing shapes into them.  But I bet it took a
long, long time...