DieselDavy
09-05-2003, 07:59
Hey Doc,
Over on the 6.2 forum in a thread called "Blockoversy" you commented about which newer blocks to use for buildups. Painthorsman commented on the early '82s.
"If you cant' find a "599" block or afford to buy a late AM General block, the next best thing is a very early casting...the blocks cast in 1981 and 1982 have (by all available info), a higher nickel content than the blocks produced in the later years. This gives them a significant increase in strength and thus, less likely to have main web cracking problems. The earliest one I have ever seen, is the one that I'm building for my truck. It was cast in March of 1981, has well over 200,000 miles on it and no web cracks! The downside is... it takes a little more hone action to get a good crosshatch pattern in the bores due to the higher than normal nickel content."
What do you think? Anything to this? I have an '82 (red block) that is still running with about 322K miles. I admit it's tired, very tired. Could these blocks really be stronger than there descendants? Might these blocks be good candidates for a buildup?
(At 290K I got a look at the cylinder walls during the only head gasket replacement this truck has seen and there were certainly no hone/hatch marks here! smile.gif
Dave
Over on the 6.2 forum in a thread called "Blockoversy" you commented about which newer blocks to use for buildups. Painthorsman commented on the early '82s.
"If you cant' find a "599" block or afford to buy a late AM General block, the next best thing is a very early casting...the blocks cast in 1981 and 1982 have (by all available info), a higher nickel content than the blocks produced in the later years. This gives them a significant increase in strength and thus, less likely to have main web cracking problems. The earliest one I have ever seen, is the one that I'm building for my truck. It was cast in March of 1981, has well over 200,000 miles on it and no web cracks! The downside is... it takes a little more hone action to get a good crosshatch pattern in the bores due to the higher than normal nickel content."
What do you think? Anything to this? I have an '82 (red block) that is still running with about 322K miles. I admit it's tired, very tired. Could these blocks really be stronger than there descendants? Might these blocks be good candidates for a buildup?
(At 290K I got a look at the cylinder walls during the only head gasket replacement this truck has seen and there were certainly no hone/hatch marks here! smile.gif
Dave