4bt cummins and trannys

[DKarvwnaris]

dk how much money for one of those gm 4 speed setups? i will be needing one very soon,please let me know...

Are you putting a 4bt in front of it or a 6bt?

What do you need for a transmission? a 4 speed 2wd transmission or a 4wd model, I have both. They are both SM465 models, is that what you want? They are not rebuilt yet, but appeared to work fine when pulled out, the trucks were driven home they came out of. The 4wd transmission was in a 1 ton 4wd pickup 1978I believe.

Make an offer on what you need, I'm reasonable.

 

[JUeckert]

dk,thanks for the quick reply. . i will be installing it behind a 95 model 6bt from a school bus,it currently has a 4 spd ally behind it. dont know if i will use the ally or not. i would like to,but if i went this route i would have to change my rear gear ratio[4. 10] cant at the moment find a od set up for the ally,or even if one exist. the engine will be installed into a 83 chev 1 ton 2wd 4spd,currently has a bad gasser. exactly what conversion parts do you have for that type setup? please give me a buzz at -- email address removed -- to talk more about it... .

 

[DKarvwnaris]

dk,thanks for the quick reply. . i will be installing it behind a 95 model 6bt from a school bus,it currently has a 4 spd ally behind it. dont know if i will use the ally or not. i would like to,but if i went this route i would have to change my rear gear ratio[4. 10] cant at the moment find a od set up for the ally,or even if one exist. the engine will be installed into a 83 chev 1 ton 2wd 4spd,currently has a bad gasser. exactly what conversion parts do you have for that type setup? please give me a buzz at -- email address removed -- to talk more about it... .

Final ratio of the Allison is 1 to 1 when the converter locks up. The 4th gear in the GM trans. will be 1 to 1. Either way, you'll be revving way to high without an overdrive. If I wanted to make money off you, I would just sell you the GM adapters and let you figure it out for yourself when you get the truck running again, I don't do things like that though. You are going to be much better off finding an overdrive transmission like the NV-4500 and using it instead. The cost of a Gear Vendors or U. S. Gear overdrive unit for your GM transmission is going to be more than buying a brand new NV-4500 on a crate with a full warranty. Get an overdrive from the start and be done with it, you'll be better off and I won't feel I sold you worthless parts for your application. Feel free to PM me for more info on motor mounts etc. I can refer you to a shop I worked at who builds custom GM/Cummins mounts. Hope you have a good outcome with your setup.

 

[blkdragon]

while were on ratios i have a question about my upcomming swap. will my ford(i know,its a ford)ranger with 3. 73 gears,a nv4500,and cummins 4bt drive the same like in mph and rpm wise as a Ram with 3. 73 gears,a nv4500,and 6bt?

 

[DKarvwnaris]

while were on ratios i have a question about my upcomming swap. will my ford(i know,its a ford)ranger with 3. 73 gears,a nv4500,and cummins 4bt drive the same like in mph and rpm wise as a Ram with 3. 73 gears,a nv4500,and 6bt?

Unless you glaze the clutch or snap the Ranger's rear axle, it will be the same. Have you considered the extra nose weight and made provisions to counterbalance it? You'll have no problem smoking the rear tires off if you don't, whether you want to or not.

Have you considered possibly upgrading the rear end to a ford 9"?, specifically the Lincoln Versailles application. It will fit the rear of your ranger within a few inches of stock width. Best part is you get disc brakes as well.

I doubt the 7. 5 or 8. 8 axles that are stock under the rangers will survive if you're looking to drive it like a full size dodge.

Have you considered a VW TDI engine for your Ranger? It would allow you to remain in nearly the same RPM range as the gasser engine now. I have seen a few guys doing this in S-10 pickups and Blazers, impressive fuel mileage and more than enough power for a mini pickup. I saw a GM transmission hanging off the back of a TDI at a trade show last year, so you should be able to find adapters from someone.

 

[DKarvwnaris]

That was another reason why I was thinking about an M1009, they use a hydroboost brake booster and not vacuum.



Do the K-Blazers have vacuum or cable actuated heater controls?



Don

Hydro boost units are no problem to find regardless, most bread trucks will have them on them, just mounted sideways on a canitlevered pedal arm. You can take it as well if you find a whole p-30.

Heater controls are my only reasoning for vacuum pumps. Most all blazers I have seen are vacuum operated, I can't remember of the military versions were cables or not. I have seen the military trucks with electric vacuum pumps on them at government auctions so they must have some with vacuum controls, I can't see what else the pumps would be there for.

 

[blkdragon]

iv done quite some research. i have a 6" skyjacker suspension lift and will use spacers under the coils in the front to even up the truck height for the extra weight. i will probably transfer the batterie to the back and put kind of weight where the spare tire goes b/c i cant carry one cause my tires are 33x12. 50's. the 8. 8 rear end will hold up fine. im going to transfer over to 31 spline axles to make them a little stronger. i might get stronger ring and pinion gears if the ones now blow out. i will probably use a good ceramic clutch or a dual disk McLeod. im not going to drive it like a full size dodge. i just wanted to know if the speed to rpm range would be the same. the truck will see no towing and no more bedweight than 500 lbs.

 

[JUeckert]

Final ratio of the Allison is 1 to 1 when the converter locks up. The 4th gear in the GM trans. will be 1 to 1. Either way, you'll be revving way to high without an overdrive. If I wanted to make money off you, I would just sell you the GM adapters and let you figure it out for yourself when you get the truck running again, I don't do things like that though. You are going to be much better off finding an overdrive transmission like the NV-4500 and using it instead. The cost of a Gear Vendors or U. S. Gear overdrive unit for your GM transmission is going to be more than buying a brand new NV-4500 on a crate with a full warranty. Get an overdrive from the start and be done with it, you'll be better off and I won't feel I sold you worthless parts for your application. Feel free to PM me for more info on motor mounts etc. I can refer you to a shop I worked at who builds custom GM/Cummins mounts. Hope you have a good outcome with your setup.

karvwnaris its funny you should mention getting a nv-4500 transmission for my setup,i did just that, bought a 96 gmc dually with one in it,it has the 6. 5 diesel in it. this one runs but has a blown head gasket. i have had great luck with 6. 2 and 6. 5 gm diesels. however i will be pulling this engine and installing the earlier mentioned 6bt into this newer truck,gave 800 bucks for the whole shabang!!!

 

[Rman]

Has anone ever mounted a Ford T-18 transmission behind a 4bt? I have a nice T-18 and Dana 300 tansfer case with a curry twin stick. I really want to use this setup cause of what I have invested in it. Can it be done... somehwat reasonably priced?

 

[DKarvwnaris]

iv done quite some research. i have a 6" skyjacker suspension lift and will use spacers under the coils in the front to even up the truck height for the extra weight. i will probably transfer the batterie to the back and put kind of weight where the spare tire goes b/c i cant carry one cause my tires are 33x12. 50's. the 8. 8 rear end will hold up fine. im going to transfer over to 31 spline axles to make them a little stronger. i might get stronger ring and pinion gears if the ones now blow out. i will probably use a good ceramic clutch or a dual disk McLeod. im not going to drive it like a full size dodge. i just wanted to know if the speed to rpm range would be the same. the truck will see no towing and no more bedweight than 500 lbs.

If your running stock ford gears, there isn't much made stronger for the 8. 8. The companies like Precision, Genuine Gear, Reider, and US Gear have far less quality than Ford's OEM tempered sets. Going to a lower numerical gear like a 3. 55 will help you more for strength because it increases the pinion size and # of teeth. Ring gear will be thinner, but its not usually the ring gear that shatters, its the pinion. I used to work for Dick Cepek Four Wheel Parts Wholesalers as a service manager, take my word on this, spend your money on something else if it breaks.

The factory dodge clutch is more than you will ever need in such a light weight vehicle, spend you money on other things like larger radiator, or driveshafts. If you make the clutch too much for the truck, something will have to give elsewhere. Since your not expecting a heavy load in the truck, it isn't neccessary.

For a spare tire, how about a 33x9. 50xR15? It will be the same diameter, just easier to carry width wise and weight wise to lift. I ran them on my '94 Ranger and K-5 Blazer in the dunes, they worked well.

 

[DKarvwnaris]

Has anone ever mounted a Ford T-18 transmission behind a 4bt? I have a nice T-18 and Dana 300 tansfer case with a curry twin stick. I really want to use this setup cause of what I have invested in it. Can it be done... somehwat reasonably priced?

I've seen those trannies in front of a GM small block in a Jeep with an adapter from Advance Adapters. If you used the 4bt with the p-30 GM bellhousing adapter and GM flywheel on it, you could do it set up with those parts without too much trouble, I doubt it will be cost effective though. No overdrive, so plan on high RPM's on the road. You'll be wanting to gear the axle/s around 3. 08 or possibly 3. 42 at the highest numerically.

 

[Rman]

It's my rock crawlin rig anyway, so high gearing is optimal. It has 4. 11 axles now, with 35 in ch tires I think it should do well for what I want. I'll be towing it to location wherever it goes anyways.

 

[DKarvwnaris]

It's my rock crawlin rig anyway, so high gearing is optimal. It has 4. 11 axles now, with 35 in ch tires I think it should do well for what I want. I'll be towing it to location wherever it goes anyways.

Perfect, go for it.

 

[DKarvwnaris]

karvwnaris its funny you should mention getting a nv-4500 transmission for my setup,i did just that, bought a 96 gmc dually with one in it,it has the 6. 5 diesel in it. this one runs but has a blown head gasket. i have had great luck with 6. 2 and 6. 5 gm diesels. however i will be pulling this engine and installing the earlier mentioned 6bt into this newer truck,gave 800 bucks for the whole shabang!!!

Advance adapters sells an input shaft that will allow you to use the GM nv-4500 in front of a dodge bellhousing and clutch setup. There are a few models of the NV-4500 that have the slave cylinder mounted internally in the bellhousing, these may require staying with the GM adapter plates off the 4bt's.

Gear spacing/ ratio, bearing size, and ease of replacement with a brand new crate transmission from the dealer are the reasons I prefer the nv-4500's. You're on the right track with your plans.

 

[blkdragon]

yeh. makes sense to use stock dodge clutch. if it can handle a big ram and a 5. 9 then it could handle a 3. 9 in a ranger. iv heard Yukon Gear's are really strong gears?maby you can clarify this. i dont think ill have a problem with the 8. 8. theirs people on the ranger forums running them in drag trucks with 31 spline axles. i dont need a spare. i have rodeside hazzard warrenty with my shop. they come and fix it if you get a flat. Plus the tires are Mickey Thompson Baja Claw Radials. they are really strong mud tires if you havnt heard of them. im going to take a rim and weld steel to it and put it back in the hanger and secure it in to counteract the extra weight thats in the front.

 

[jayhawktrailers.com]

I got a buddy looking for an auto for his 4b. Price me all the stuff you got and I'll let him know. Where are you at. I'm in denver