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Mack Cat V8 transplant


Roscoetaggart
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5 hours ago, Roscoetaggart said:

Hi guys, 

Just got my hands on a 3208 cat v8 motor, it was cheap so I bought it,  has anyone ever tried to put one in an r600 mack? Does it fit? Cheers 

the 3208 was a factory option in the R400 series,model R492,same hood length,just lower GVW

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On 7/26/2019 at 3:35 PM, Superdog said:

the 3208 was a factory option in the R400 series,model R492,same hood length,just lower GVW

Thanks for that,  I'm guessing it doesnt bolt straight up to a mack 10 speed but definitely tempted to go that way.

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I think flywheel housings and bellhousings tend to be fairly standardized. I.e. if you can put an 8ll on a Mack and a Cat, there's probably a bellhousing/flywheel housing combination that'll match a Mack 10 speed to the Cat.

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Back in the 90’s. Worked at a DD dealership. We worked on a bunch of Roadway stuff. Always thought the 3208 was kinda like the 8.2 DD’s. We did a bunch of R&R on the 3208’s for them. They were better than 8.2 for sure but always told they were throw away engines. Run till they quit & replace. Really don’t know but that’s what I was told.

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12 minutes ago, theakerstwo said:

A 3208 is fully rebuildable.i have did a few back when.We always bored the block and installed dry sleeves and used standard pistons.The 1100 series was not rebuildable.

Long time ago; don’t remember but I bet it was costly to bore & install sleeves. I could see on 1,cylinder but all 8? 

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On 7/26/2019 at 1:35 AM, Superdog said:

the 3208 was a factory option in the R400 series,model R492,same hood length,just lower GVW

I saw this truck in an old data book but I always wondered if they ever actually built any of them. It seemed like a better choice than the Scania motor but they weren't exactly popular either.

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1 hour ago, AITG said:

I saw this truck in an old data book but I always wondered if they ever actually built any of them. It seemed like a better choice than the Scania motor but they weren't exactly popular either.

They made 135 of the R492 models.

"OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK"  Thomas Edison

 “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’

P.T.CHESHIRE

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If you ever been next to a 1160 starting up when it was cold god help you we would start them up in the shop and it would stink us out. The 3208 was a better engine design but they were put in trucks that they should never have been in. We used them in ford flat bed single axle 33,000 gross they worked good. If an engine needed 8 sleeves we figured it was better to get a block exchange. Cat had some pretty good deals years ago on reman's. You could get a reman 3406 head and 9 times out of 10 it was new for not a lot of difference money wise when doing a valve job with new valves.

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4 hours ago, 41chevy said:

They made 135 of the R492 models.

Thanks for that information. Do you know if a specific fleet wanted this setup? I remember seeing a U model with a 903 Cummins once... I think some fleet on the East Coast wanted them for some unimaginable reason.

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2 hours ago, AITG said:

Thanks for that information. Do you know if a specific fleet wanted this setup? I remember seeing a U model with a 903 Cummins once... I think some fleet on the East Coast wanted them for some unimaginable reason.

My MACK production papers only list model call outs, years of production and number built.  Probably not one specific company as the 135 built  were spread out over from 1975 to 1981. There was also a run  40 R492R models built from 1976 to 1980.

"OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK"  Thomas Edison

 “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’

P.T.CHESHIRE

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14 hours ago, AITG said:

Do you know if a specific fleet wanted this setup?

A large customer for the Mack DM-492 was the US Air Force. 

The trucks were built as 5,000 gal. refueling tankers with the 3208 and automatic transmission.  The DM-492 were built between 1975-84 with 1,536 units produced.  I would say that almost all the DM-492 trucks probably went to this application.

 

Jim

It doesn't cost anything to pay attention.

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There were three of them at the Peoria, IL regional airport supporting the helo squadrons based there. Good running trucks that wouldn't get out of their own way.

Dog.jpg.487f03da076af0150d2376dbd16843ed.jpgPlodding along with no job nor practical application for my existence, but still trying to fix what's broke.

 

 

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