So bets are that I will find them on my 302.....and the book says you need to literally destroy them to remove them..... note to self.... be patient you do not have the heads removed yet????
Bob C.
In reading the only manual I have so far, it seems that N0 6 cyl has a tendency to run hot....so did the 216 and to resolve that issue the military installed whatn was called a steam tube...... basically a 3/8 steel line from the temp port of the 216 to the neck of the radiator filler..... remember military 216 ran at 0 rad pressure. When I isntalled my rebuilt 261 stock I retro fitted a steam linesimialr to the 216 BUT installed temporarily a 1/4 ball valve and a see thru vinyl line...... and ran the engine on a test run in the back field with the valve fully closed....stopped, left the engine running and opened the line......for a few minutes the tube flowed only bulbe antifreeze foam then it cleared up...... repeated the test with the valve fully open...... and the fluid was a solid green color with no bubbles.
I concluded to remove the temporary fittings and installed the steam line permanently on the 261 and so far, with lots of hard driving, never had a heat issue on the rear cylinder. I my aging memory is correct I detected a pipe plug on the rear of the block between or near NO 5 and 6n cyl which I intend to test out with a view of fitting a steam line.
Thanks Guys
BobC
