Posted by jdemaris on August 13, 2013 at 06:04:12 from (70.192.22.121):
In Reply to: Re: gm 6.5 pickup posted by 4020deereboy on August 12, 2013 at 21:35:27:
I've had over 20 rigs with 6.2s and 6.5s. Not because I love them. More because other people got disgusted with them and sold them cheap. Or some mechanic could not figure out how to fix.
6.2 was created to be a higher MPG power replacement for the 305 gasser. 6.5 isn't much different. Just bigger bore and turbo added with slightly enhanced cooling. Still an ultra lightweight V8 diesel for the time. Lightweight block that sometimes cracks by the mains. Heads that also crack when overheated. Cast-iron crankshaft (instead of forged steel), etc. Timing chain in front instead of all gear. Also is less efficient then a Cummins or later Ford since it's IDI.
Nothing wrong with having one for everyday use as long as "everyday" does't include pulling 30K lbs. as you mention.
I'd certainly never pick one for HD use.
The US military is stuck with the 6.2/6.5 format and those engines have failed miserably under military use. That led to the new 6.5s being made now with heavier high-nickel blocks, heavier heads, forged steel cranks, etc. Not going to find one in civialian truck unless someone spent $10K and installed it.
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