432 low deck. Howards hydraulic flat tappet cam, Crower lifters. MRE 1.6 roller rocker arms and MRE rocker shafts. 8.90 effective length pushrods with 5/32 radius ball/cup. Felpro .039 head gasket #1009.
Rocker arm sweep contact on valve stems was approx .055 inch width, contact starting at valve stem max diameter and moving toward exhaust side. This was for .550 valve lift.
FYI...the "long" ARP head bolts were too long on RH side of 1969 383 block. Cleaned and tapped the holes as deep as possible and still had to grind off/clean up the 5 "long" head bolts..shorten them about 1 thread pitch. They were bottoming out before the head bolts were fully torqued.
View attachment 1714988363 View attachment 1714988364
