T-case to frame please help - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Dads 68 GMC · 12-12-2007, 02:42 PM

I took a mounting bracket off a `69 blazer today and bolted it to my frame,now the bolts that go in the right side of the T-Case will not go in.I took the upper transmission mounts out & they almost line up. the mounts seem too thick,they are 1 1/8in.thick I called Carquest they only show one from `68 to `81.pn#31-2107 which is what I bought. Maybe i have to drill holes in my frame? I would appreciate any input,Thanks Philip

Blazer1970 · 12-12-2007, 03:48 PM

Do you have the correct factory crossmember for the TH350/NP205 combo?

**Yukon Jack** · 12-12-2007, 04:33 PM

The side mounting bracket you have from the 69 K5 may be for a Dana 20 transfer case instead of an NP205. Can't guarantee they are different, but I know the crossmember is different for a Dana 20 compared to the NP205 so likely the side bracket is different too.

Jtrux · 12-12-2007, 04:45 PM

Quote:

Originally Posted by Yukon Jack

The side mounting bracket you have from the 69 K5 may be for a Dana 20 transfer case instead of an NP205. Can't guarantee they are different, but I know the crossmember is different for a Dana 20 compared to the NP205 so likely the side bracket is different too.

Yep, what he said. Machine some spacers for it and run it.

Dads 68 GMC · 12-12-2007, 06:06 PM

thanx for the help guys, I think i need a different cross member.This truck had a v-6 4 speed,rockwell t-case from factory. When i put the v-8 cross member in i moved it ahead 2 in. & the trans. mount lined up so i thought i had it made until i got this side bracket maybe it is different also. I do some hunting for new parts tomorrow. THIS SIGHT IS GREAT LOTS OF AWSOME PEOPLE,Philip

:

Blazer1970 · 12-13-2007, 05:39 AM

Your transfer case might also hit the floor pan if you try to use the crossmember that you have.

jaros44sr · 12-13-2007, 07:33 AM

Maybe it's me, but is that crossmember upside down, can't really see, don't have my glaases on... J.

**CUSTOM/10** · 12-13-2007, 07:43 AM

If that crossmember was from a 221 then that's your problem. There's a 1 in difference in height between the 221 & the 205 crossmembers. You need to get a crossmember from a truck ( 69-72 )that had a np205 t-case, standard or auto dosen't matter there both the same. I'm not sure about the torque mount that may also be different.

Gary

**Yukon Jack** · 12-13-2007, 10:24 AM

I should have added, I used 1" spacers to lower my Dana 20 transfer case crossmember to fit my NP205. Otherwise the NP205 was hitting the floor like mentioned above in relation to the Rockwell T221 crossmember.

pumpkin · 12-14-2007, 05:04 AM

Quote:

Originally Posted by jaros44sr

Maybe it's me, but is that crossmember upside down, can't really see, don't have my glaases on... J.

Ya, the crossmember looks upsidedown to me also.

Dads 68 GMC · 12-14-2007, 04:50 PM

I got a crossmember today for a 205t-case, it is one inche deeper than the original.thankyou to all of you that helped me get out of this bind,and no its not upside down,that would really put it waaaaaaaaaaaaaaaaaaay high.

jaros44sr · 12-15-2007, 12:24 AM

OK, glad I was wrong

**Yukon Jack** · 12-15-2007, 05:31 AM

Quote:

Originally Posted by Dads 68 GMC

I got a crossmember today for a 205t-case, it is one inche deeper than the original.thankyou to all of you that helped me get out of this bind,and no its not upside down,that would really put it waaaaaaaaaaaaaaaaaaay high.

Any chance you can get some comparison pics, always nice to have pics to show differences.

Dads 68 GMC · 12-19-2007, 02:48 PM

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Thanx for the help everyone,Yukon Jack,sorry it took me so long to get back I just got my old crossmember out last night,I hope you can see the comparision pics OK. the 205 crossmember measured about 1/2 in. deeper than the t-221. I installed it today & it went together good.Y-jack I like your truck,Philip

12-12-2007, 02:42 PM	#1
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	T-case to frame please help I took a mounting bracket off a `69 blazer today and bolted it to my frame,now the bolts that go in the right side of the T-Case will not go in.I took the upper transmission mounts out & they almost line up. the mounts seem too thick,they are 1 1/8in.thick I called Carquest they only show one from `68 to `81.pn#31-2107 which is what I bought. Maybe i have to drill holes in my frame? I would appreciate any input,Thanks Philip Attached Images

12-12-2007, 03:48 PM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: T-case to frame please help Do you have the correct factory crossmember for the TH350/NP205 combo? __________________ Tim

12-12-2007, 06:06 PM	#5
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	Re: T-case to frame please help thanx for the help guys, I think i need a different cross member.This truck had a v-6 4 speed,rockwell t-case from factory. When i put the v-8 cross member in i moved it ahead 2 in. & the trans. mount lined up so i thought i had it made until i got this side bracket maybe it is different also. I do some hunting for new parts tomorrow. THIS SIGHT IS GREAT LOTS OF AWSOME PEOPLE,Philip:

12-13-2007, 05:39 AM	#6
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	Re: T-case to frame please help Your transfer case might also hit the floor pan if you try to use the crossmember that you have. __________________ Tim

12-13-2007, 07:33 AM	#7
jaros44sr Registered User Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,446	Re: T-case to frame please help Maybe it's me, but is that crossmember upside down, can't really see, don't have my glaases on... J. __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

12-12-2007, 04:33 PM	#3
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: T-case to frame please help The side mounting bracket you have from the 69 K5 may be for a Dana 20 transfer case instead of an NP205. Can't guarantee they are different, but I know the crossmember is different for a Dana 20 compared to the NP205 so likely the side bracket is different too. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

12-13-2007, 07:43 AM	#8
CUSTOM/10 Senior Member Join Date: May 2003 Location: Sandown, NH Posts: 2,801	Re: T-case to frame please help If that crossmember was from a 221 then that's your problem. There's a 1 in difference in height between the 221 & the 205 crossmembers. You need to get a crossmember from a truck ( 69-72 )that had a np205 t-case, standard or auto dosen't matter there both the same. I'm not sure about the torque mount that may also be different. Gary __________________ Gary 72 SWB 4x4 My 72 SWB Build http://67-72chevytrucks.com/vboard/s...d.php?t=259859

12-13-2007, 10:24 AM	#9
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,683	Re: T-case to frame please help I should have added, I used 1" spacers to lower my Dana 20 transfer case crossmember to fit my NP205. Otherwise the NP205 was hitting the floor like mentioned above in relation to the Rockwell T221 crossmember. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

12-14-2007, 04:50 PM	#11
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	Re: T-case to frame please help I got a crossmember today for a 205t-case, it is one inche deeper than the original.thankyou to all of you that helped me get out of this bind,and no its not upside down,that would really put it waaaaaaaaaaaaaaaaaaay high.

12-15-2007, 12:24 AM	#12
jaros44sr Registered User Join Date: May 2006 Location: Philadelphia, Pa. 19454 Posts: 9,446	Re: T-case to frame please help OK, glad I was wrong __________________ Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim

12-19-2007, 02:48 PM	#14
Dads 68 GMC Registered User Join Date: Feb 2006 Location: Sidney; MT Posts: 172	Re: T-case to frame please help Thanx for the help everyone,Yukon Jack,sorry it took me so long to get back I just got my old crossmember out last night,I hope you can see the comparision pics OK. the 205 crossmember measured about 1/2 in. deeper than the t-221. I installed it today & it went together good.Y-jack I like your truck,Philip



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