700R4 with NP205? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*72longbed* · 11-20-2004, 11:49 PM

Who can help with the necessary info to be able to adapt a 700R4 to a 205 transfer case in a 72 K20?? Need to know if the output shaft on the 700R4 needs to change, if any adapters are needed, and so forth??

Thanks to all,

72longbed

Hause · 11-21-2004, 12:01 AM

This may help:advance adapters

Phil

breeh · 11-21-2004, 02:35 AM

You need the Advance Adapters shorter main shaft or I have heard that someone makes a spacer plate to make up for the longer original shaft. Also, the 205 needs to be the one that fits the TH350 trans due to spline count differences.

Cethern · 11-21-2004, 11:39 AM

Did you see the thread started by teeitup? There are pic's of the spacer I used when I put a 205 behind my 700R.

4X4 Adaptor

That mite work if not just look for the thread...4X4 Adaptor

*72longbed* · 11-21-2004, 12:35 PM

This is great info, Thanks!! So let's see if I understand, Advance Adapters can supply me with either the proper output shaft for my 700R4 to fit a T350 ready NP205 transfer case, or they can sell me the Adapter itself to mate up a T350 ready NP205 transfer case to my stock 700R4, right??

If I was to use the adapter only and my 700R4, this would probably require sliding the crossmember back and changing the driveshaft lengths, front and rear, right??

Let me know if I'm on the right track here guys, and thanks for your help, this is good stuff!!

72longbed

Cethern · 11-21-2004, 02:06 PM

I'm not sure if A/A is selling that spacer when I did mine they were not. There was someone out of Texas selling them. You mite try Coloradok5.com someone over there mite have the info.
If you were to use just the spacer you would have to move the crossmember back I think it was...
When I did mine the biggest pain was the four bolts on the back of the tranny trying to find metric studs or all thread on a weekend was not easy lol

Cethern · 11-21-2004, 04:16 PM

If you were to cut off the 2+ inches I think you would loose the splines on the output shaft.

The spacer is 2+ inches thick and with that you still have to grind about 1/8 off each shaft so they will not bind up if you forget to grind the shafts you will not get the two parts to seal. let alone have the bindding problem.
The other way is to get the short shaft from A/A

hugger67 · 11-21-2004, 08:53 PM

do not cut the splines this does not work i just did this tonight and basically screwed up the whole process now i have to find another output shaft and geut the spacer the spacer seems like the way to go to me it looks like the front drive shaft will hit the trans pan if you use the shorter output shaft

*72longbed* · 11-21-2004, 09:13 PM

hugger67,
sorry for your troubles, but I think we can all learn from the experience. How difficult is it to replace the output shaft on a 700R4 vs. adding the spacer?? Is it true that the shaft is about $153.00 vs. $450.00 for the spacer?? Maybe I read the price for the wrong part, let me know please.

Thanks,
72longbed

Cethern · 11-21-2004, 10:05 PM

a while back the spacer was only 75$ or so. To change the output shaft you have to tear down the tranny, Unless you plan on a rebuild the spacer is a better way IMO.
In some of those pic's you can see how close my driveshaft came to the pan. I had a deep pan on as well it cleared but it was close.

hugger67 · 11-21-2004, 10:51 PM

cethern
where did you get your spacer from do you have a phone number or website other than advane adaptors i need to get one of these as soon as possible and would like to have a couple of options available if i could i need to be able to move this truck in the next week
thanks

*72longbed* · 11-21-2004, 11:01 PM

cethern,

same as hugger, need the info on where to get that adapter plate 'CHEAP' ??

Thanks,
72longbed

Cethern · 11-22-2004, 08:57 AM

I wish I had a answer you guys. But the only one I have is to go on www.coloradok5.com
And ask those guys. It has been almost two since I did my swap. And I got most of my setup from another member of CK5.
But when I get home tonight I'll look around just the same, I would like to have the info as well.

Cethern

earl87gta · 11-22-2004, 05:35 PM

ask and you will recv.
A & Reds Transmission Parts
2501 E Truman Road
Kansas City, MO 64127
(816) 483-7337

The part # 7Q35A and it sells for around $50.00.

clarkjw24 · 11-22-2004, 06:05 PM

Whats the advantage of using the 205 behind the 700 other than the cast iron casing and no chain? Does it give a better 4wd gear ratio? Wouldn't that give a longer tranny? having to shorten the rear and lengthen the front drive shafts? Making a bad angle in the rear.

earl87gta · 11-22-2004, 06:19 PM

a 205 is just stronger having a shorter rear and longer front isntbad most guys that run dubblers in their k5 trail rigs try to have the same linght drive thaft for front and back then all you need is one spair or if you break the rear you can use the one from the front to get you home.

Cethern · 11-22-2004, 08:37 PM

Earl your the man Bother!!

I see you moved when did that happen?

Bhull2 · 11-22-2004, 11:53 PM

With just the 2" spacer installed, do you still need to shorten the rear and lengthen the front driveshaft?

Cethern · 11-23-2004, 10:42 PM

Yes... You will.

Bhull2 · 11-24-2004, 08:24 PM

I just ordered the part (# 7Q35A) from A and Reds yesterday. I spoke with Bob and then to Richard at their "techline"and both informed me that the part is made for a 700r4 to 350 conversion, not the other way around

. We discussed the issue ( I mentioned this thread

) and determined that it could be used either way. It was $60 and I will let you know.....just in case it does not work

. I have been looking for this adaptor for quite some time. I will take pics of the part and install, and maybe we can add it to the FAQ list.

Cethern · 11-24-2004, 09:21 PM

Good deal! you'll love the OD !

I need to do it again 3200 @ 70MPH does not cut it

earl87gta · 11-25-2004, 12:04 AM

Glad I could help. work transferd me a in may I hated th move but I do like it here.

Cethern · 11-25-2004, 12:05 AM

Well Good deal. To bad we could not of met when I was running the roads.

*72longbed* · 11-25-2004, 10:51 AM

This is what it's all about!! This Board and its members have come to the rescue and helped me every time! And not just by guessing and maybe's, but with 'tried and true' real experience and knowledge. I really appreciate it!!

Thank you all for your input and research, I think you have found another valuable solution for us fellow members!!

Bhull2, I look forward to hearing if that adapter plate is the 'key'.

Happy Thanksgiving to All,
72longbed

hugger67 · 11-25-2004, 12:52 PM

i ordered mine on monday and got it wednesday we put the tranny and everything in last night everything bolted up good and fit nice but we ran into one major issue make sure that you grind enough off both shafts or you'll run into problems like i did i tightened up the t case and cracked the stock adaptor so now i need to find a adaptor asap if anybody has one they want to get rid of let me know i need to get my truck moved by dec 1st
andy

11-20-2004, 11:49 PM	#1
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	700R4 with NP205? Who can help with the necessary info to be able to adapt a 700R4 to a 205 transfer case in a 72 K20?? Need to know if the output shaft on the 700R4 needs to change, if any adapters are needed, and so forth?? Thanks to all, 72longbed

11-21-2004, 12:01 AM	#2
Hause Registered User Join Date: Oct 2004 Location: Lawrence Posts: 26	np205 adapter This may help:advance adapters Phil

11-21-2004, 02:35 AM	#3
breeh Recovering 67-72 Addict Join Date: Oct 2000 Location: North Bend, WA Posts: 1,788	You need the Advance Adapters shorter main shaft or I have heard that someone makes a spacer plate to make up for the longer original shaft. Also, the 205 needs to be the one that fits the TH350 trans due to spline count differences. __________________ 68 Short Fleet 4x4; 427; BTO Level 3 700R4; NP205; Dana 60 front and rear; 4" lift with 35's; Disc brakes; AGR variable ratio steering; factory bucket seats; factory tach and tilt. "Friends call me cruzer cuz I like fast cars and fast women"

11-21-2004, 11:39 AM	#4
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	Other thread Did you see the thread started by teeitup? There are pic's of the spacer I used when I put a 205 behind my 700R. 4X4 Adaptor That mite work if not just look for the thread...4X4 Adaptor __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit... Last edited by Cethern; 11-21-2004 at 11:41 AM. Reason: Link didn't work

11-21-2004, 12:35 PM	#5
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	This is great info, Thanks!! So let's see if I understand, Advance Adapters can supply me with either the proper output shaft for my 700R4 to fit a T350 ready NP205 transfer case, or they can sell me the Adapter itself to mate up a T350 ready NP205 transfer case to my stock 700R4, right?? If I was to use the adapter only and my 700R4, this would probably require sliding the crossmember back and changing the driveshaft lengths, front and rear, right?? Let me know if I'm on the right track here guys, and thanks for your help, this is good stuff!! 72longbed Last edited by 72longbed; 11-21-2004 at 01:06 PM.

11-21-2004, 02:06 PM	#6
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	I'm not sure if A/A is selling that spacer when I did mine they were not. There was someone out of Texas selling them. You mite try Coloradok5.com someone over there mite have the info. If you were to use just the spacer you would have to move the crossmember back I think it was... When I did mine the biggest pain was the four bolts on the back of the tranny trying to find metric studs or all thread on a weekend was not easy lol __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-21-2004, 04:16 PM	#7
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	If you were to cut off the 2+ inches I think you would loose the splines on the output shaft. The spacer is 2+ inches thick and with that you still have to grind about 1/8 off each shaft so they will not bind up if you forget to grind the shafts you will not get the two parts to seal. let alone have the bindding problem. The other way is to get the short shaft from A/A __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-21-2004, 08:53 PM	#8
hugger67 Registered User Join Date: Jul 2002 Location: wisconsin Posts: 67	do not cut the splines this does not work i just did this tonight and basically screwed up the whole process now i have to find another output shaft and geut the spacer the spacer seems like the way to go to me it looks like the front drive shaft will hit the trans pan if you use the shorter output shaft

11-21-2004, 09:13 PM	#9
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	hugger67, sorry for your troubles, but I think we can all learn from the experience. How difficult is it to replace the output shaft on a 700R4 vs. adding the spacer?? Is it true that the shaft is about $153.00 vs. $450.00 for the spacer?? Maybe I read the price for the wrong part, let me know please. Thanks, 72longbed

11-21-2004, 10:05 PM	#10
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	a while back the spacer was only 75$ or so. To change the output shaft you have to tear down the tranny, Unless you plan on a rebuild the spacer is a better way IMO. In some of those pic's you can see how close my driveshaft came to the pan. I had a deep pan on as well it cleared but it was close. __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-21-2004, 10:51 PM	#11
hugger67 Registered User Join Date: Jul 2002 Location: wisconsin Posts: 67	cethern where did you get your spacer from do you have a phone number or website other than advane adaptors i need to get one of these as soon as possible and would like to have a couple of options available if i could i need to be able to move this truck in the next week thanks

11-21-2004, 11:01 PM	#12
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	cethern, same as hugger, need the info on where to get that adapter plate 'CHEAP' ?? Thanks, 72longbed

11-22-2004, 08:57 AM	#13
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	I wish I had a answer you guys. But the only one I have is to go on www.coloradok5.com And ask those guys. It has been almost two since I did my swap. And I got most of my setup from another member of CK5. But when I get home tonight I'll look around just the same, I would like to have the info as well. Cethern __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-22-2004, 05:35 PM	#14
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	ask and you will recv. A & Reds Transmission Parts 2501 E Truman Road Kansas City, MO 64127 (816) 483-7337 The part # 7Q35A and it sells for around $50.00. __________________ Earl 68 2500 4x4 GMC Burb

11-22-2004, 06:05 PM	#15
clarkjw24 I like cheese Join Date: Aug 2004 Location: McBee, SC Posts: 192	Whats the advantage of using the 205 behind the 700 other than the cast iron casing and no chain? Does it give a better 4wd gear ratio? Wouldn't that give a longer tranny? having to shorten the rear and lengthen the front drive shafts? Making a bad angle in the rear. __________________ Cruiser: 1972 K5, 400/TH350/NP205, D44 and 12Bolt, 35 TSLs. Trail rig: 86 K5, 350 TBI, SM465/NP205, 5.13s, 14ff locked, h1 beadlocks, 42" TSLs, 64" rears, 56" fronts, D60 locked, 35pline, drive flanges, crossover, hydro assist, OBA. Tow rig: 2002 F350 PSD CC Dually FX4, chipped, cold air intake, BFGs



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11-22-2004, 06:19 PM	#16
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	a 205 is just stronger having a shorter rear and longer front isntbad most guys that run dubblers in their k5 trail rigs try to have the same linght drive thaft for front and back then all you need is one spair or if you break the rear you can use the one from the front to get you home. __________________ Earl 68 2500 4x4 GMC Burb

11-22-2004, 08:37 PM	#17
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	Earl your the man Bother!! I see you moved when did that happen? __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-22-2004, 11:53 PM	#18
Bhull2 Registered User Join Date: Jul 2000 Location: Jasper, IN Posts: 84	driveshaft length? With just the 2" spacer installed, do you still need to shorten the rear and lengthen the front driveshaft?

11-23-2004, 10:42 PM	#19
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	Yes... You will. __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-24-2004, 08:24 PM	#20
Bhull2 Registered User Join Date: Jul 2000 Location: Jasper, IN Posts: 84	I bought one! I just ordered the part (# 7Q35A) from A and Reds yesterday. I spoke with Bob and then to Richard at their "techline"and both informed me that the part is made for a 700r4 to 350 conversion, not the other way around . We discussed the issue ( I mentioned this thread ) and determined that it could be used either way. It was $60 and I will let you know.....just in case it does not work . I have been looking for this adaptor for quite some time. I will take pics of the part and install, and maybe we can add it to the FAQ list.

11-24-2004, 09:21 PM	#21
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	Good deal! you'll love the OD ! I need to do it again 3200 @ 70MPH does not cut it __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-25-2004, 12:04 AM	#22
earl87gta Senior Member Join Date: Dec 2003 Location: Kingsport TN Posts: 4,641	Glad I could help. work transferd me a in may I hated th move but I do like it here. __________________ Earl 68 2500 4x4 GMC Burb

11-25-2004, 12:05 AM	#23
Cethern What was I thinking?? Join Date: Dec 2003 Location: Commerce City Co Posts: 636	Well Good deal. To bad we could not of met when I was running the roads. __________________ 72 K5 that needs lots of parts.. 71 GMC 3/4 4x4 That doesn't need much which is a good thing I don't think I could aford another money pit...

11-25-2004, 10:51 AM	#24
72longbed Account Suspended Join Date: Jun 2003 Location: PA Posts: 1,411	Great Board!!! This is what it's all about!! This Board and its members have come to the rescue and helped me every time! And not just by guessing and maybe's, but with 'tried and true' real experience and knowledge. I really appreciate it!! Thank you all for your input and research, I think you have found another valuable solution for us fellow members!! Bhull2, I look forward to hearing if that adapter plate is the 'key'. Happy Thanksgiving to All, 72longbed

11-25-2004, 12:52 PM	#25
hugger67 Registered User Join Date: Jul 2002 Location: wisconsin Posts: 67	i ordered mine on monday and got it wednesday we put the tranny and everything in last night everything bolted up good and fit nice but we ran into one major issue make sure that you grind enough off both shafts or you'll run into problems like i did i tightened up the t case and cracked the stock adaptor so now i need to find a adaptor asap if anybody has one they want to get rid of let me know i need to get my truck moved by dec 1st andy

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