Superdog

The 711 and 673C are pretty much laid out the same externally,Andy,except for the 673C having a turbo,although turbo's have been added to 711's,also.I had a '66 R model with a 673C and a Duplex and it handled it fine,someone either got tired of 2 sticking or wanted the lower gears of a 15 speed RR.A 15 speed Triplex mated to a 673C is a much sweeter set up in my opinion.As far as the air cleaner,all the 673C powered trucks that I've had all were equipped with oilbath air cleaners.Did they have both of yours hooked up,or just the one under the hood?

You got a 170 hp 673 somebody slapped a turbo on,not a 237,those were the ENDT675.The 673 never had the provisions for oil cooled pistons so you really have to be careful not to cook it.I'm not sure how much hp just adding a turbo to one would add,but the factory ENDT673 was 205 hp,and later in the '60s raised to 225 hp,and the ENDT673C was 250 hp.Hope you didn't pay 237 price for your 673.

The tag on the A's were inside the right door on the seat base.The Serial # on the A's will be stamped on the frame near the rear spring hanger up near the top of the flange on the right side.Every once in awhile you'll see one stamped on the left side too,so check there if you can't find it.Hopefully the frame hasn't been chopped or the 5th wheel plate isn't covering it up.This happened alot and is the reason they went to stamping frames by the front axle spring hanger.Check ebay for manuals and parts books,I've seen A model literature on there several times.

The Magnum was a limited edtion and available in both Superliner and MH in 1985.They were black with the Magum logos and were all E9 powered.

No,the 707 was never available in the DM800.The 707 gas engine dates back to the 40's and was last used in firetrucks into the later '60's.I believe there was even a early version of the 707 used in the AP of the late '20's. The DM replaced the B80 series trucks in 1966.

Pic's kinda blurry,is it a A50 or A54?You can adjust the air governor if you want it to build up more air pressure,90 to 100 psi would be fine.

I had a '86 R model with Neway and it weighed just a pinch heavier than another local R model spec'd simialr only with 34K Camelback.I'm sure the newer Hendrickson built Mack air ride would be a couple hundred lbs. lighter than Camelback.Oh yeah,that's with tires.

Charlie, You will probably have to do a little fabricating.There haven't been alot of Maxidynes put in L's.The only guy I know of that has a 237 in a L fire truck is Cal Little.You might wanna try to get ahold of him.I don't think your 707 waterpump will work on a 237.The rear engine mounts were usually bolted to the trans. on the diesels.If I was you,I believe I'd go with a newer TR1076 transmission,these are plentiful and usually pretty cheap,and should remedy your bellhousing problem.I'd go with a dry type element air cleaner off a R or U 685.These are a little smaller than the single outlet air cleaners on the later model 686 and 688's.You'll have to go to air or electric wipers,also.You also don't want to forget that your rear end will be of a ratio best suited for a gas engine,you'll have to change that also.

Looks like some real treasures in there,Barry.Be sure and keep those safe from any "torch happy" people.Do you have those B models listed in the Registry?

The R Model

Just like anything,you'll have good ones,bad ones and in between.Friend of mine has an early '85,started out as a 440.He bought it used in '87,ran it a few years and in-framed it,did an out of frame at one million and found some cracks in the block.He put in a new block and had it turned up to 750 hp,had turbo problems so he toned it down a little.He had some minor pump problems,and had some head bolts break,but nothing really major,and has never been stranded along the road with it.It's been majored once on the new block and is bumping 2 million miles on the truck.All in all,it's been a good truck. Worst part about them is cost and availabilty of parts since they've been out of production.

Nice looking U model,Doug.I always wanted to find a U795.

B models were NOT replaced by U models,the C model was replaced by U models,the U model was introduced in '64,not '65,and production ended in '89.

Dan, The C models used rubber seals,they probably kept using up the alum.windshield frames in the L cab B models till they ran out and switched them to rubber too.The '64 B755 I used to own had alum. frames,most of the ones I've seen with all rubber were '65 and '66 models.

I was 98% sure that's what VIN # you'd give me.I have one more question for you.Why didn't you use your old name on this board,Sarge?

There's no comparison between the 2,the E9 will out pull a Cat.But here's the downside.Since the E9 went out of production,parts are starting to get scarce and it's probably more expensive of the 2 to work on now,because of that. Another little bit of advice.You really shouldn't admit in public that you drive a Cat powered truck,especially a Pete.

The U model came out in '64,before the R model.It replaced the C model as a short BBC short haul,city tractor,and the offset cab and short hood was supposed to offer improved visibility in city traffic. I bought a '79 single axle U model last year for $900.It was in decent shape,very little rust,small crack in hood,excellent running 237.

In '84,there was a '57 B61 from Toledo,Iowa at the Walcott Truckers Jamboree that had a 8V92T in it.It was also Tractor of the Month in Overdrive in that same time period,'83 -'84.A year or so back,the same truck was for sale on one of the Truck Trader sites,but was in Kentucky.

What's the VIN # on your '73 R685?I know of one just like it,they might be twins.

Larry, I've got a complete s/a air ride with rear end,make you a good deal on the whole works.It's on 20" spokes.

High beam indicator light

I would think 22.5's would be simple for them,as the 5 hole wheels were available in that size.Transcon was still running them on it's Freightliners and trailers way up into the '80's.I've got a few sets of the original 5 hole 22.5's.

The engine was a ENDT673C,those were rated at 250 hp.,not to be confused with the older ENDT673 which was 205 hp.

I can tell you that all Visions don't do that,my Dad has a '01 and younger brother has a '04.Being it's a '05,that would make it a CXN,meaning it has the Volvo designed frame,the hood probably just wants the hell off for pride's sake.

If you can't find it stamped on the engine block,look at the VIN# of the truck,if it was a R795,then the engine is a ENDT865,325 hp ,if it was a R797,then it is a ENDT866,375 hp.Either way,parts are getting scarce for both.