identifying a GM diesel engine?

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Originally Posted by Pierre

LARC 5 I did my training in had Cummins power, but wouldn't have been surprised to hear of alternate engines.

Pete

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555 (triple 5) or more commonly called triple trouble? Basiclly a NA VT 190

according to wikipedia the LARC spec 6-71's were a 165hp unit.....

Brian, what would you reccomend re: transmission and differentials? i know where i can source a 2 speed diff from a early/mid 50's chev

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Originally Posted by Sprint

according to wikipedia the LARC spec 6-71's were a 165hp unit.....

Brian, what would you reccomend re: transmission and differentials? i know where i can source a 2 speed diff from a early/mid 50's chev

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6 ser 9/10/13sp roadranger, they may be hard to find but a 9 ser would do.

wouldnt that be a bit of overkill for a 5 ton truck?

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Originally Posted by Sprint

wouldnt that be a bit of overkill for a 5 ton truck?

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Be the easiest option for finding flywheel housing for the GM.

any idea what it'd be like on fuel compared to something like a 7.3L powerstroke V8 from a F350?

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Originally Posted by Sprint

any idea what it'd be like on fuel compared to something like a 7.3L powerstroke V8 from a F350?

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I believe driven sensibly they can be ok, lots of options to get GMs marching. I've never owned one, ask someone ancient like Brian:p;):D

A 6-71 will chew up and spit out a 610/613 Fuller if you work it to capacity. You need a 9509/910/9513/915. Dont bother with two speed diffs if you have a range change trans. Two speed diffs are Fred Flintstone vintage crap, obsolete by 1960. Flywheel and flywheel housing on automotive spec 6-71 engines is usually SAE #2. Go around some specialist truck wreckers. Fuel usage on my 8V92TA's was comparable with other engines doing the same work. The couple of 53 series I owned were heavy on fuel but I feel in hindsight that this was because they were really too small for the job and were working their rings out just about all the time.

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Originally Posted by Brian Hjelm

A 6-71 will chew up and spit out a 610/613 Fuller if you work it to capacity. You need a 9509/910/9513/915. Dont bother with two speed diffs if you have a range change trans. Two speed diffs are Fred Flintstone vintage crap, obsolete by 1960. Flywheel and flywheel housing on automotive spec 6-71 engines is usually SAE #2. Go around some specialist truck wreckers. Fuel usage on my 8V92TA's was comparable with other engines doing the same work. The couple of 53 series I owned were heavy on fuel but I feel in hindsight that this was because they were really too small for the job and were working their rings out just about all the time.

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If the 71 is set below 200 hp the 6 ser box will handle it Brian, the hardest thing would be finding one these days.

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Originally Posted by V8Ian

If the 71 is set below 200 hp the 6 ser box will handle it Brian, the hardest thing would be finding one these days.

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That combination is right on the limit of a 600 series capacity. A used or rebuilt box will not be as strong. OK for light work but if you push the power through it regularly you will have a short-lived transmission. 900 series were always put behind a 6-71 for prime mover or dog trailer work. At White Motor we never built anything with a 600 series transmission. Truckies could stuff 900 series so why risk the lighter box to their tender care.