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1995 Chev 1500 Pick-up Other - Drive Train & Driveline
Question: I got a 95 k1500 w/bad transfer case 421c assy #1598 6096 ratio 272, the question is can i use transfer case out of 90 sierra 421c assy #1560 4178 ratio 272 also how can i tell the spline count in these new process transfer cases thanks vince
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Technican: Hi;
As far as I can remember the spline count should be the same. The only thing that will make the difference is the size of the out shaft. Not the ID but the OD. If you can use a set of calipers to check the size this will help. If you have the drive shaft that came out of the one you are putting in the u-joints are the same size. Just use the output shafts out off the new transfer case. .
Technican: Hello, Will you please clarify something so I may try to help?
You state the TCs to be "421c", could they actually be "241c"?
Trying to research,
Owner: it is 241 thanks
Technican: What a relief! Now I can get busy. It may have been the reason others have not been responding to your question sooner.
Technican: No luck today. I went to one of the largest Chevy Dealers in our state and gave the info to the parts department.
The part numbers from your printed message did not find a response in their data base. I was told that the spline count would not be in the info the parts dept has.
I then spoke to the service manager and asked him to teach me how to determine the spline count without disassembly of the TC. All he could offer was that a larger OD out shaft has a higher spline count.
Monday, when the sidewalks roll back out, I'll be contacting a four wheel truck center and a truck salvage to see if I can find a chart that says what model/year range the 90 Sierra TC you talked about will fit. Someone has a book somewhere.
Any four wheeler clubs in your area? Some sixteen year old knows what we need (at 16 they know everything) and if he is sober we might have a chance.
Back Monday,
Technican: Today I talked to men who told me that the 90 model 241C will work in your 95 K1500 Chevy if you use the front drive shaft from the 90 model also.
The only real difference is how the front drive shaft is connected to the TC. The 90 model uses a flat platform with a ring of attaching bolts. The 95 has the "U"-shaped yoke that cradles the universal joints.
The 90 model uses the 241C New Process TC. The 95 uses the 241C New Venture TC. Ratios are the same as you stated.
No one really addressed the spline count issue/question. I was advised that the using of the 90 model front drive shaft would eliminate the spline count concern.
I have exploded view graphics on each of these TCs if you want them. Do you have a FAX number?
Thoughts?,
Owner: , fax # is 412-253-0647, thanks alot the exploded views would be great
vince
Technican: Vince, Sorry for the delay. I had my gall bladder surgically removed today. I'm pretty sore.
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