IDIBRONCO
IDIBRONCO
VERY nice job on the up pipe.
7.3 idi build for my S1654
- Thread starter Isaac Ristow
- Start date
FrozenMerc
Full Access Member
Crazy is OK (at least that is how I justify these not-normal thoughts...) You are doing exactly what I am planning for my next project, just with this old COE Ford, rather than an IH. Even my build plan for the 7.3 I have sitting in the corner of the shop is very similar to your 6.9. I plan on keeping the Clark 5 spd, and swapping to a lower gear rear axle (the 6.89 / 8.83:1 two speed rear is not going to do it for me). Stay with 40" tires and target that 70 to 75 mph @ 2500 RPM range.
Keep up the good work, and maybe by the time I get around to this one, yours will be done.
Keep up the good work, and maybe by the time I get around to this one, yours will be done.
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asmith
Full Access Member
I love those old ford cabovers!! I have thought about doing a project like you are talking about many times. I have never been close enough to one to know if an IDI or a DT or even a 6.7PS would fit in them. Love both of these projects ideas!!
FrozenMerc
Full Access Member
Mine has a Lincoln Y-Block in it (either a 302 or 332, I haven't tore it down far enough to measure the stroke) from the factory. Later on, Ford put 10.4 Liter 3208 CAT's and 534 ci Super Duty gassers in them in the 70's and 80's, so just about any V8 smaller than a 3408 will fit. I think you could even stuff a 8.3 Cummins or DT466 Corn Binder in if you are resourceful. A big 6 may require some modification to the middle seat area though.
IDIBRONCO
IDIBRONCO
I don't remember the biggest size, but I don't think that there was a 302. There was a 312 and (I think) and 292 for the smallest. I do also know that some Thunderbirds had an optional supercharged 312, but that's a different story.
FrozenMerc
Full Access Member
You guys are getting your Ford Y Blocks and Lincoln Y-Blocks confused. Two completely different engine families.
Ford Y-Block - Used in Ford and Mercury cars, pickups and up to Class 6 trucks. 272, 292, and 312 displacements. The 312 was car only. In production from 1954 to 1964, replaced by the Windsor V8 (260,289,302,351).
Lincoln Y-Block - Used in Lincoln Cars and Heavy Duty Trucks. 279, 302, 317, 332, 341, and 368 displacements. These engines had a much taller deck height then the Ford Y-block and the heads had a regular intake port layout unlike the stacked configuration used in the Ford Y-Block. Essentially the big block of the line-up in the early and mid 50's. In production from 1953 to 1963. Replaced by the MEL V8's in Lincoln cars, and the FE/FT and SuperDuty V8's in big trucks.
Ford Y-Block - Used in Ford and Mercury cars, pickups and up to Class 6 trucks. 272, 292, and 312 displacements. The 312 was car only. In production from 1954 to 1964, replaced by the Windsor V8 (260,289,302,351).
Lincoln Y-Block - Used in Lincoln Cars and Heavy Duty Trucks. 279, 302, 317, 332, 341, and 368 displacements. These engines had a much taller deck height then the Ford Y-block and the heads had a regular intake port layout unlike the stacked configuration used in the Ford Y-Block. Essentially the big block of the line-up in the early and mid 50's. In production from 1953 to 1963. Replaced by the MEL V8's in Lincoln cars, and the FE/FT and SuperDuty V8's in big trucks.
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I stand corrected.
IDIBRONCO
IDIBRONCO
Well I sure learned something here. If it would have happened early in the morning, I might have just gone back to sleep.
Isaac Ristow
Full Access Member
That will be a very cool build! What would you use the truck for? Just because its bad a$$ or you got a something in mind for it? Mines a 7.3 I pulled a 6.9 out of it. Is that clark 5 speed a overdrive unit? My perkins swapped square body has a clark 580VO the O is for overdrive and behind that is a under over spicer brownie box gives me double over drive it doesn't have a tach but I'd guess its around 1500 rpm @ 70-75mph. If i go to 11r22.5 tires on my binder with the overdrive from the eaton fuller I should be around 2800rpm at 75mph which is just fine by me it will deffinetly need some rpm to keep that big turbo going I put on but I figure turning some more rpm is better than trying to lug at lower rpms making lots of heat and smoke. That 13 speed will enable me to keep it right in the power band. On your truck I would consider putting more modern axles under it with disc brakes because I'm assuming it has juice brakes then I would find a way to mount a hydroboost and make it dual circuit brakes too. I have a 69 ford F6000 dump truck the extra 0 over a F600 means it's diesel that being said it has a Ford v150 diesel under the hood which is just a Caterpillar 1140 painted blue. Ford had a contract with Cat for the first cat medium duty diesel truck engines.
FrozenMerc
Full Access Member
I want to make a roll-off out of it, alah the image below and use it for transportation of some of my other cars, or possibly customer cars.
The Clark is not an overdrive, but that is OK. With the 40" tall tires and a 3:90 or 4:10 rear, the rpms will be right in the range I want at highway speeds.
I plan on getting a more modern rear axle, with the right ratio, juice disc brakes, 10 bolt hubs, and hopefully also converting the rear to air ride. There is a guy locally trying to sell a 2013 Navistar flatbed that has had the emissions crap pulled off of it, so the old 6.4 is in permanent limp mode. It has a 4.10 rear, with juice brakes, 10 bolt hubs and the right weight rating. I am really debating weather or not I should snatch that up, peal the rear axle, brake system, front hubs and possibly the Allison out of it and scrap the rest. The problem, I just don't have the time or space to do it right now, so we will see. I have to get my '51 F1 out of the shop and off to the painters first.
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The Clark is not an overdrive, but that is OK. With the 40" tall tires and a 3:90 or 4:10 rear, the rpms will be right in the range I want at highway speeds.
I plan on getting a more modern rear axle, with the right ratio, juice disc brakes, 10 bolt hubs, and hopefully also converting the rear to air ride. There is a guy locally trying to sell a 2013 Navistar flatbed that has had the emissions crap pulled off of it, so the old 6.4 is in permanent limp mode. It has a 4.10 rear, with juice brakes, 10 bolt hubs and the right weight rating. I am really debating weather or not I should snatch that up, peal the rear axle, brake system, front hubs and possibly the Allison out of it and scrap the rest. The problem, I just don't have the time or space to do it right now, so we will see. I have to get my '51 F1 out of the shop and off to the painters first.
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Isaac Ristow
Full Access Member
As an update the engine is in the truck and running along with the 13 speed transmission. Intercooler water system has been plumbed to its own radiator and 12v brushless water pump, fuel system all hooked up, added isspro temp, oil pressure, EGT, and autometer boost gauges. Transmissions air system and shifter are all plumbed in along with the beefy 12v oil filled air compressor I got I'm just waiting for a pressure switch for the compressor. The driveshaft is at the shop being built using the 4 inch shaft from the L8000 Ford truck. The transmission has a 1710 series Ujoint on it while the truck/rear end use a 1480 series joint. The guy I have do my driveshafts said he will have to get creative to get it from 1710 to 1480 on a 4 inch shaft but he has a plan. Once I get a driveshaft in it I'm going to drive it just up the road to my buddies place he has a exhaust bender and we are going to run 3 inch off the turbo down to the 4 inch single stack then build a crossover pipe to finish the turbo kit then I can drive it see how it does make changes and adjustments where needed then I have a few minor things I want to do to the truck like chop the extra frame sticking out the back off and build a new gooseneck plate as the one it has isn't build to my standards. I'll have another update hopefully within the next few weeks when it's drivable
Isaac Ristow
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The_Josh_Bear
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I love it! That's my new favorite way to mount a water to air CAC! 
