badassblazer03
Registered Member
I got an 82 blazer, whats all needed to do a 24V cummins swap?
-Stew
-Stew
CK5
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Whats needed for a cummins swap
- Thread starter badassblazer03
- Start date
Diesel Dan
1/2 ton status
Hmmm, this could be a loaded question /forums/images/graemlins/thinking.gif.
First the 24V motors were computer controlled. So you'll need wiring and a ECM. The 12Vs are mechanical, easier.
Second, what trans do you want too use?
GM trans will require the hard to find 4BT/TH400 adapters from the P30 bread trucks. Not a lot of these trucks around but probably the most common for this setup.
You could use a NV4500 from a dodge and have the output shaft changed over to use a GM np241 or np208. Then there is the first gen dodges that have a 727/np205(RH drop).
Many options in the trans department.
Most likely you'll have to run electric fans, unless you have a body lift and it allows you enough room to slide the motor back for fan clearance.
If I keep my suburban I would pull the entire drivetrain out of my '98 dodge to repower the sub. It is an early '98 with the 12V motor.
First the 24V motors were computer controlled. So you'll need wiring and a ECM. The 12Vs are mechanical, easier.
Second, what trans do you want too use?
GM trans will require the hard to find 4BT/TH400 adapters from the P30 bread trucks. Not a lot of these trucks around but probably the most common for this setup.
You could use a NV4500 from a dodge and have the output shaft changed over to use a GM np241 or np208. Then there is the first gen dodges that have a 727/np205(RH drop).
Many options in the trans department.
Most likely you'll have to run electric fans, unless you have a body lift and it allows you enough room to slide the motor back for fan clearance.
If I keep my suburban I would pull the entire drivetrain out of my '98 dodge to repower the sub. It is an early '98 with the 12V motor.
DwarF
1/2 ton status
So the venerable 700R4 is out of the question for the 12/24v?
Diesel Dan
1/2 ton status
" venerable 700R4 " /forums/images/graemlins/histerical.gif.
Ohhh, that's a good one!
I'm a GM fan and the later 4L60Es are much better. But when you say venerable I think of the TH350 and Th400, and the 700 just isn't there, IMO.
Ohhh, that's a good one!
I'm a GM fan and the later 4L60Es are much better. But when you say venerable I think of the TH350 and Th400, and the 700 just isn't there, IMO.
I don't think a 700R4 could stand up to the torque of the Cummins. I'm sure there's some specialty place who could build one up, but I'd still be skeptical./forums/images/graemlins/thinking.gif Cummins' seem to be fond of destroying wimpy transmissions. /forums/images/graemlins/cool.gif
Anyway, it can be done so that you can run the stock mechanical fan, if you're willing to "massage" the firewall a little. If you're going to work the Cummins much, I'd definitely try to use the mechanical fan. I posted some pics of my 12V in another post recently.
Anyway, it can be done so that you can run the stock mechanical fan, if you're willing to "massage" the firewall a little. If you're going to work the Cummins much, I'd definitely try to use the mechanical fan. I posted some pics of my 12V in another post recently.
mcinfantry
1/2 ton status
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i run a 4bt, my opinion a better swap.
1) 800lbs vs 1200 over the front axle. if you wheel it, you will have to put a d60.
2) fits easier
3) 105hp/286ftlbs tq.
4) 20mpg in my rig.
you can buy the frito lay trucks with th400's or sm465's behind them.
1) 800lbs vs 1200 over the front axle. if you wheel it, you will have to put a d60.
2) fits easier
3) 105hp/286ftlbs tq.
4) 20mpg in my rig.
you can buy the frito lay trucks with th400's or sm465's behind them.
joez
1/2 ton status
[ QUOTE ]
105hp/286ftlbs tq.
[/ QUOTE ]
Not to mention PLENTY of room to grow from there /forums/images/graemlins/waytogo.gif
Im looking for a 4bt right now, but im not sure how well it will tow in stock form, as thats what it will be stuck at for a little while. I dont have the funds for a 6bt. /forums/images/graemlins/frown.gif
105hp/286ftlbs tq.
[/ QUOTE ]
Not to mention PLENTY of room to grow from there /forums/images/graemlins/waytogo.gif
Im looking for a 4bt right now, but im not sure how well it will tow in stock form, as thats what it will be stuck at for a little while. I dont have the funds for a 6bt. /forums/images/graemlins/frown.gif
mcinfantry
1/2 ton status
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i should be able to tow 7000-8000. my truck weighs 6500 and gvw for the 4bt "as is" is 13000 or so.
supersize75k5
OrganDonorRacing.com
why is nobody mentioning the frame /forums/images/graemlins/deal.gif
a cumminns in my thoughts would kill a old 1/2 ton frame /forums/images/graemlins/yikes.gif
a cumminns in my thoughts would kill a old 1/2 ton frame /forums/images/graemlins/yikes.gif
mcinfantry
1/2 ton status
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i doubt a 4bt would. at 24mpg at 70, its worth a try..
I checked out your page....very nice. So, you have 2 M715's?
mcinfantry
1/2 ton status
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no, the one in the back is my buddies. he let me look at it to make sure mine went back together correctly.
24mpg at 70 and approximately 2200rpm
if i did 55 to 60 which is 1600rpm to1700 i bet im in the 30's
the cummins is VERY easy to hook up, and work on
24mpg at 70 and approximately 2200rpm
if i did 55 to 60 which is 1600rpm to1700 i bet im in the 30's
the cummins is VERY easy to hook up, and work on
[ QUOTE ]
why is nobody mentioning the frame /forums/images/graemlins/deal.gif
a cumminns in my thoughts would kill a old 1/2 ton frame /forums/images/graemlins/yikes.gif
[/ QUOTE ]
Well I have one in my 76 K5, it's actually a 354ci perkins TD, the torque isn't as high as the new cummins but 415ft lbs @800RPM with an engine that weighs 1300lbs, this frame has held up fine for the past 7 years (4 with the PO and 3 with me) I oly broke the frame at the usual place at the steering box last year after I put a front locker and 35" tires and went on the rubicon.
Now I am getting a 1 ton frame to replace the blazer frame since I CAN but I don't think it's necessary.
/forums/images/graemlins/grin.gif
why is nobody mentioning the frame /forums/images/graemlins/deal.gif
a cumminns in my thoughts would kill a old 1/2 ton frame /forums/images/graemlins/yikes.gif
[/ QUOTE ]
Well I have one in my 76 K5, it's actually a 354ci perkins TD, the torque isn't as high as the new cummins but 415ft lbs @800RPM with an engine that weighs 1300lbs, this frame has held up fine for the past 7 years (4 with the PO and 3 with me) I oly broke the frame at the usual place at the steering box last year after I put a front locker and 35" tires and went on the rubicon.
Now I am getting a 1 ton frame to replace the blazer frame since I CAN but I don't think it's necessary.
/forums/images/graemlins/grin.gif
blasterD
1/2 ton status
Is the front half of a 1 ton any different than a 1/2 ton? I always thought they were the same from the cab forward.
supersize75k5
OrganDonorRacing.com
yes cab and mounts are same, the frame is a whole different enchalada though, I have a friend wondering on these issues right now /forums/images/graemlins/hack.gif
[ QUOTE ]
yes cab and mounts are same, the frame is a whole different enchalada though, I have a friend wondering on these issues right now /forums/images/graemlins/hack.gif
[/ QUOTE ]
Cab mounts are the same, the frame you can work around that issue with different length body lifts.
That is what i will do in combination with maybe raising a couple of mounts to make it closer.
I will post up once I have it done or at least figured out.
/forums/images/graemlins/thumb.gif
yes cab and mounts are same, the frame is a whole different enchalada though, I have a friend wondering on these issues right now /forums/images/graemlins/hack.gif
[/ QUOTE ]
Cab mounts are the same, the frame you can work around that issue with different length body lifts.
That is what i will do in combination with maybe raising a couple of mounts to make it closer.
I will post up once I have it done or at least figured out.
/forums/images/graemlins/thumb.gif
