Deve,
The importance of the 1/2" ports was pointed out near the beginning of this thread.
Also, DFauberWoodsmith posted (just before your post): "The oil lines are plugged in intake side of engine and obviously the movable pin is in the right position."
"Also, the 848 head is NOT a native 261 head, but is a GREAT head for the 261 IF the engine shop drills two steam holes in the appropriate place"
The additional coolant passages (oddly called "steamed holes" due to a Jim Carter description) that are needed when using a 235 head is not just "two steam holes in the appropriate place" in the head. Two coolant passages must be drilled in the head above each of three "siamesed" pairs of 261 cylinders (6 additional coolant passages should be drilled in the head).
Last edited by Woogeroo; 03/02/2015 1:09 AM.
