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All Other GM Diesels Discuss any other GM Diesel engines... 5.7l Olds, Chevette Diesel, or anything else that doesn't fit anywhere else...

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Old 01-02-2011, 12:30 PM   #1 (permalink)
gmtgmt
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5.7 Diesel info need

Im looking to convert my Volvo 740 to a V8 was looking for a 305/350 not looking for any real power.

so got the idea why not go diesel.
i have been thinking about the 6.2 but i might be a little overkill in size for the little volvo so what else? came to think of the olds 350 5.7 diesel

are they the same size as a normal chevy 305/350?
what year and model should i look for? D, DX ?

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Originally Posted by 4320Diesel View Post
Never forget the look on that guy with the fancey cummins who i blew by and he got a look at the Diesel 6.2L emblem on the tailgate, i imagine he was kicking his *** for shelling out 50+ grand for something that got wasted by a 900 dollar truck haha.
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Old 01-02-2011, 01:20 PM   #2 (permalink)
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The DX has the roller lifters which greatly reduced wear.If you can find a DX,i'd go that route,but a D block is also just as good.You've probably heard lots of horror stories about the 5.7 olds diesel but they are not as bad as some people make them out to be.

They are about the same size as a 305/350 chevy engine.

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1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filter setup,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne injectors,stanadyne blue tag 4911,DSG girdle,reman 89 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter setup,4 diamond eye exhaust/2 piece crossover

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Old 01-02-2011, 01:47 PM   #3 (permalink)
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Quote:
Originally Posted by dieselolds View Post
The DX has the roller lifters which greatly reduced wear.If you can find a DX,i'd go that route,but a D block is also just as good.You've probably heard lots of horror stories about the 5.7 olds diesel but they are not as bad as some people make them out to be.

They are about the same size as a 305/350 chevy engine.
Thanks Dieselolds
i know they have a gotten a bad rep but so does the 6.2s
they are only as bad as the person behind the wheel
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Originally Posted by 4320Diesel View Post
Never forget the look on that guy with the fancey cummins who i blew by and he got a look at the Diesel 6.2L emblem on the tailgate, i imagine he was kicking his *** for shelling out 50+ grand for something that got wasted by a 900 dollar truck haha.
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Old 01-02-2011, 02:12 PM   #4 (permalink)
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The engines are not that bad but I was expecting to see at least one crack in my 6.2 after removing the oil pan when preparing to install the DSG stud girdle,but I was really suprised to see none.The 660 blocks were known for cracks in that area but i'm real glad no cracks were found.

Crankshaft breakage seemed to be the problem with the 5.7 and 6.2/6.5 but i've read that there are some great castings and some not so good,so the crankshaft breaking in a low mileage engine would have to point to a quality control issue.
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1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filter setup,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne injectors,stanadyne blue tag 4911,DSG girdle,reman 89 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter setup,4 diamond eye exhaust/2 piece crossover

2008 Mercedes Benz E320 3.0 V6 turbo diesel

2013 Volkswagen Passat 2.0 TDI
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Old 01-02-2011, 06:01 PM   #5 (permalink)
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the 5.7 was a converted olds/pontiac 350 gas block. probably why they had all the head bolt/gasket issues, more compression was too much stress.
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Old 01-02-2011, 10:54 PM   #6 (permalink)
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Quote:
Originally Posted by flyinelvis11 View Post
the 5.7 was a converted olds/pontiac 350 gas block. probably why they had all the head bolt/gasket issues, more compression was too much stress.
The internals were strong enough for diesel useage but each cylinder only had 4 head bolts around it.There simply was not enough clamping load.4 head bolts as we know is not enough to do an adequate job.The GM head bolts were useless but ARP fasteners do a much better job.

The 6.0 powerstroke too only has 4 bolts per cylinder which explains why they have problems with head gaskets.
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1996 GMC Sierra ext.cab Z71....with new genuine GM 6.2 660 short block,4L80E/6.5TD cylinder heads,82' 6.2 rocker arms,acdelco TP1069/Racor 20S fuel filters,4" diamond eye exhaust,3.73 G80 locker,stanadyne injectors

1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filter setup,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne injectors,stanadyne blue tag 4911,DSG girdle,reman 89 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter setup,4 diamond eye exhaust/2 piece crossover

2008 Mercedes Benz E320 3.0 V6 turbo diesel

2013 Volkswagen Passat 2.0 TDI
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Old 01-03-2011, 12:34 AM   #7 (permalink)
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Was they converted gas engine or was the bottom end just designed like a gasser?
can they be converted to gas use again some state this?
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Quote:
Originally Posted by 4320Diesel View Post
Never forget the look on that guy with the fancey cummins who i blew by and he got a look at the Diesel 6.2L emblem on the tailgate, i imagine he was kicking his *** for shelling out 50+ grand for something that got wasted by a 900 dollar truck haha.
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Old 01-03-2011, 09:13 AM   #8 (permalink)
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They are similar to the oldsmobile 307,350,403 in many ways externally such has having the same valve covers,oil pan,oil filler tube and exhaust manifolds,etc.

But internally the differences are quite noticeable.Everything is built to a much heavier scale.Some oldsmobile gasoline blocks have "windowed" mains which meant you could look right through the block in the main bearing cap locations.But the diesel block is solid all the way through.The crankshaft,connecting rods,main bearing caps,etc are built to a much heavier scale.

They can be converted back to gasoline but you cannot convert a oldsmobile 350 or 403 gasoline block to diesel.The diesel block has a special built in casting for the injection pump to be mounted upon.It's integral and built into the block.Olds gasoline engines do not have this built in casting why is why they cannot be converted to diesel from scratch.
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1996 GMC Sierra ext.cab Z71....with new genuine GM 6.2 660 short block,4L80E/6.5TD cylinder heads,82' 6.2 rocker arms,acdelco TP1069/Racor 20S fuel filters,4" diamond eye exhaust,3.73 G80 locker,stanadyne injectors

1996 Chevy K1500 Z71.....with '99 6.5 506 goodwrench van engine,88-93 6.2 diesel Napa y-pipe,'87 700R4,acdelco TP630F/Racor 20S fuel filter setup,Bosch non-turbo injectors,stanadyne blue tag 5088

1993 Chevy K1500 Z71...with 97' 6.5 TD 506 block,82' 6.2 rocker arms,stanadyne injectors,stanadyne blue tag 4911,DSG girdle,reman 89 700R4,Banks boost/pyrometer gauges,acdelco TP1069/TP943 fuel filter setup,4 diamond eye exhaust/2 piece crossover

2008 Mercedes Benz E320 3.0 V6 turbo diesel

2013 Volkswagen Passat 2.0 TDI
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Old 01-03-2011, 11:03 AM   #9 (permalink)
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The one story about these engines that needs to die, but never will, is that they are a converted gas motor. They arn't .Though the Olds diesel shares many design similarities with the 350 ci gasoline engine, they are completely different engines. They do not use the same block, and the internals are completely different. Because they share the same bore & stroke, it was assumed that they were the same platform
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well to make your pump retarded, you could let it hang out with me for a day
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Old 01-03-2011, 12:46 PM   #10 (permalink)
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Quote:
Originally Posted by diaric View Post
The one story about these engines that needs to die, but never will, is that they are a converted gas motor. They arn't .Though the Olds diesel shares many design similarities with the 350 ci gasoline engine, they are completely different engines. They do not use the same block, and the internals are completely different. Because they share the same bore & stroke, it was assumed that they were the same platform
X-2 It bugs the heck out of me everytime I see someone say that.....

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