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Toro Flow Diesel Engines For GMCs that came with the Toro Flow Diesel Engines |
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#1
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Diesel to gas reversion
Hey guys. just got a 62 3/4 ton 4wd with the D351 Toroflow. the only problem seems to be the injector pump but was wondering for future reference if you could convert this engine back to a gasser. Any and all info is much appreciated. Thanks.
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#2
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Re: Diesel to gas reversion
First of all the ToroFlow 351 Diesel isn't a converted gas to Diesel type engine, yes the ToroFlow shares similar architecture to the gas V6 engines there are too many differences that would not make it practical to convert to gas. The balancing is completely different between the two engines. The Toroflow uses a balance shaft with weights, the head bolts are a larger diameter. It would be far more cost effective to just swap in a gas 351 or any other larger gas V6 like a 401 or 478. The only Toroflow that was the same with it's gas counterparts was the 637 V8, it was designed as a Diesel and a gas version only differed with a different set of heads and possibly balancing.
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#3
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Re: Diesel to gas reversion
awsome. Thank you.
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#4
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Re: Diesel to gas reversion
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#5
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Re: Diesel to gas reversion
Hi I owned aboat with a turbo diesel toroflow it worked well and gave no trouble. I was able to get all the usual parts ie filters hoses and parts from later models. However in Australia no other parts where available. I had a stainless conector for the engine to turbo made. And a new exaust manufactured. One disadvantage was that even at reasonable low revs it drank fuel at about 40 litres (10galls) an hour however I love the truck it looks awsome
Best wishes with the restoration post a picture when its done Alan |
#6
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Re: Diesel to gas reversion
Quote:
I heard that these diesel options were available but rarely ever ordered so you might have a very desirable unit there. Would love to see pictures or video on here? Good luck with it! |
#7
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Re: Diesel to gas reversion
There was no Diesel option in pickup trucks, though many GMC truck dealers could do such a conversion if the customer requested such.
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#8
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Re: Diesel to gas reversion
Does anyone have pictures of a dealer-installed Toro Flow into a 6066 pickup? I'm mostly interested in motor/transmission mounts but would love detailed pics of everything. GMJakers13, does your conversion look like a dealer may have done it? I'm assuming a dealer installation would look professionally done. I have a DH-478 in a 72 5500 that I'd like to put in the 65 2500 NAPCO and want to do it the way a dealership or upfitter would have done it.
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#9
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Re: Diesel to gas reversion
I think what he really ment about converting it back to a gas engine is more like Swaping it back. I would say it would not bee too hard a job to remove the D351 and in stall either a 351 or 401 back in its place.
The Toro-Flow diesel did not come out tell 1964, a lot of the later trucks got dieselized, and many of the factory trucks that came with those diesels, got gas engines installed. the rating on the diesel were not really that good, a D478 had about the same power as a 401, and the D351 was not much better then a 305. I think GMC missed the boat with the Toro-Flow, it should have been a light truck diesel, they work good in 14000 lbs or less trucks, and they also got good fuel milage when compeared to a GMC V6 gas engine. the D351 was more rare of the two Toro-Flow sizes, a lot more of the D478 or DH478 got built, so don't scrap that engine, if you don't want it I'll bring my trailer to Wyo and pick it up. I got a 351C here at the house if you wanted to trade, I was told it ran when pulled but it been here for about 15 years now.
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#10
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Re: Diesel to gas reversion
Nothing a turbocharger won't fix!
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