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Old 07-22-2006, 09:30 AM   #15
3 Rivet Member
1978 31' Excella 500
Goose Creek , South Carolina
Join Date: Aug 2003
Posts: 136
Images: 9
Good point Tin Knocker.
The dowel pin is an easy fix. Less than an hour . Where it to come out, different story.

The dreaded 53 Block-Most 53 show up in 99 and 00 trucks built at ST Louis plant- I can relate to this one. I had the 53 Block and yes it cracked at a 131,701 miles. Cummins made good on it with giving me a new long block. Was it still a pain? Sure it was, but that is for a different thread. there are also plenty of these 53's with 200,000 plus miles out there that have'nt cracked.
Would I buy a Truck with the 53, probadly not but I would not shy away from any of the others, dowel pin or no dowel pin

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Old 07-22-2006, 11:07 AM   #16
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Originally Posted by Goin camping
Don't do it! Why? That diesel is a gas engine Chevy converted to diesel. The injection pump on those models is weak and expensive.
Not so. While never mistaken for a Cummins, or even a Navistar, the 6.2 was developed by Detroit Diesel, and was actually a pretty decent engine. There were several problems which arose when it was bored out to 6.5 liters, but they were worked out over the years and the 6.5 is still being built every day for use in Humvees.

On the other hand, it is a very low hp engine. 125 hp, if I remember correctly. Even with diesel torque, that is not a lot of umph for towing large metal boxes at highway speeds.


'85 Sovereign, 25'
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Old 07-22-2006, 05:17 PM   #17
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1960 24' Tradewind
santa barbara , California
Join Date: Apr 2006
Posts: 1,352
Hello everyone,

The only gas to diesel GM engine was the oldsmobile 350 ,it is not a chevy
design engine .GM took an olds 350 gas engine and put diesel heads on it
basically ,it was a pile of crap ,really was ,people would convert them back
to gas sometimes ,head changes etc. waste of good money.The 6.2 came along and was pretty good ,got a reputation for burning oil.The 6.5 came
after and a turbo on it .They are a good engine ,and if taken care of last
for a long time .That said ,the lift pumps ( a basic frame mounted fuel pump)
failed and the injection pumps sometimes ,usually misdiagnosed ,as the
fuel timing control motor and shaft (has a small tiny ball crimped on it)
would come off causing fuel timing to be all over the place.The module controller is a common replaced part.Alot of the 6.5 replaced parts are misdiagnosed as even the dealerships piled on parts trying to fix them.
A computor scan tool with data stream capability is a must to confirm
proper fuel timing ,injection pump timing and desired timing .Thats it in addition to glow plugs every 100k miles .NEVER EVER use starting fluid in
any diesel to try to start it .Major damage is almost always immediate.And
as was posted that 6.5 is still in use today.And most of the problems
have been worked out .They can really take it though.

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Old 07-22-2006, 06:28 PM   #18
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1992 29' Excella
madison , Wisconsin
Join Date: Aug 2002
Posts: 4,644
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good post scott

my '97 6.5 turbo diesel has been a pretty good truck, it is retired to snow plow duty now. every once in a while i tow the trailer with it.

other than changing the pump mounted driver it has worked flawlessly.

it pulls the trailer or any other heavy load very well.


you call them ferrets, i call them weasels.
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