265 IND dismantle

[47 dodge 1.5 ton]

I pulled the head tonight to see where improvements can be made. Top of pistons is flush with top of block, head is flat to piston (no recess), head gasket measures .047” thick. Cam has .375 lift both valves, top of valve to block measures .425”. Head max valve depth pocket measures .495”.  This motor has a tremendous amount of build up behind the valves. Motor has never been pulled down for overhaul. Pictures to follow.

[55 Fargo]

18 hours ago, 47 dodge 1.5 ton said:

I pulled the head tonight to see where improvements can be made. Top of pistons is flush with top of block, head is flat to piston (no recess), head gasket measures .047” thick. Cam has .375 lift both valves, top of valve to block measures .425”. Head max valve depth pocket measures .495”.  This motor has a tremendous amount of build up behind the valves. Motor has never been pulled down for overhaul. Pictures to follow.

Looks like the usual when head pulled.

.375 or .380 lift is a general stock lift. Now duration and lobe separation may be different,than a car or truck or maybe not.

You could always measure combustion chambers to see where your at.

That head if never cut could be trimmed upwards to .100 if need be. Even at a prudent .060 it should bring up compression to near 8 to 1 with block decked flat too.

Going up to 9 to 1 most likely your looking at an aftermarket head.

 

Edited October 28, 2020 by 55 Fargo

[47 dodge 1.5 ton]

Do you happen to know what the differences are to the later truck head or a picture of the chamber? I thought there was a post here but only see the 23” heads. Or— is the only difference in CC’s? I’m on a hunt now for one and see what turns up. One difference is the hole is not through to cylinder 6 like my 237 1947 head. Wish I could just pop that off for a comparison but don’t want to go that route yet.

[DJ194950]

I have never seen that amount of buildup hear the valves on any motor especially at the exhaust that usually runs the hottest. Maybe it had no operating thermostat for years and ran cold for years would be my only guess. Non operating temp. gauge also.??

 

DJ

[47 dodge 1.5 ton]

I drove the combine 30 miles home, ran in the “r” part of “normal” the whole way. Remember this thing never turned over 1950rpms a day in its life. It ran cool for sure.