4x4 trans what years will work - The 1947 - Present Chevrolet & GMC Truck Message Board Network

hillbillyrider · 11-29-2009, 10:00 PM

i have a 77 model chevy 4x4. it has the bulldog 4 speed in it. the transmission busted the other day. i was wondering what years will interchange on the trans. i want a direct bolt in. thanks in advance

BIG V · 11-30-2009, 09:45 PM

the Bulldog as you call it is the sm465 it will work with 4wd models only from 1972-80 the earlier ones didnt have syncros the later modelones has syncros on the 1st gear

hillbillyrider · 11-30-2009, 10:02 PM

thanks, thats what i needed to know

sailed2japan · 12-01-2009, 02:26 AM

Will earlier/later models not bolt up?

*2tons of fun* · 12-01-2009, 05:02 AM

Quote:

Originally Posted by BIG V

the Bulldog as you call it is the sm465 it will work with 4wd models only from 1972-80 the earlier ones didnt have syncros the later modelones has syncros on the 1st gear

wtf?

they will bolt up to ANY sbc/bbc.

will work with ANY tcase from the t221 to the np 203 205 208 231 241, with the proper STOCK adapters.

intsalled from 69-91.

mech clutchs till 85, hydro after, doesnt affect the tranny at all, is only the bell housing.

the only 2 real changers are in the LATE 80's when the changed from a short 10spline to a long 32spl out put for the aluminum tcases and the round pattern 205's. and they changed the top to aluminum in 88ish.

granny gear was never syncro'd afiak.

gm used the 465/205 all the way up to 91.

*2tons of fun* · 12-01-2009, 05:05 AM

Quote:

Originally Posted by sailed2japan

Will earlier/later models not bolt up?

depends on what you want to do or swap to.

you can swap an entire setup if you want, or swap a rear output if you feel like getting dirty or have a particular case you want to use.

far and a way the most versitile trans gm ever used. can be found on 2wd half tons, dump trucks, crew cabs, dually's and 4x4, hell the only thing they didnt come in was cars.

hillbillyrider · 12-03-2009, 02:39 AM

heard dat. thanks for the replies. picked up a trans and t-case yesterday for $400. and it came out of a 77. imagine that, could hardly find one and when i did, its the same year as mine.

BIG V · 12-03-2009, 03:05 AM

Quote:

Originally Posted by 2tons of fun

wtf?

they will bolt up to ANY sbc/bbc.

will work with ANY tcase from the t221 to the np 203 205 208 231 241, with the proper STOCK adapters.

intsalled from 69-91.

mech clutchs till 85, hydro after, doesnt affect the tranny at all, is only the bell housing.

the only 2 real changers are in the LATE 80's when the changed from a short 10spline to a long 32spl out put for the aluminum tcases and the round pattern 205's. and they changed the top to aluminum in 88ish.

granny gear was never syncro'd afiak.

gm used the 465/205 all the way up to 91.

for his 1977 only 1972-1980 will work thats wtf 81 went to 35 spline and a different adapter 1971 you have to change the output shaft nuts to fit in to his adapter. so like i originally stated 1972-80 will work. thanks for all the useless information about all that won't work with his 1977 t-case.

charlie diaz · 12-03-2009, 12:18 PM

also, the 205 was replaced by the np208 in 1985

*2tons of fun* · 12-04-2009, 05:01 AM

Quote:

Originally Posted by BIG V

for his 1977 only 1972-1980 will work thats wtf 81 went to 35 spline and a different adapter 1971 you have to change the output shaft nuts to fit in to his adapter. so like i originally stated 1972-80 will work. thanks for all the useless information about all that won't work with his 1977 t-case.

uh, 35 spl is 2wd ONLY!!

there are no OUT PUT SHAFT NUTS on a 4x4, again 2wd ONLY

i have pulled many 10spl 465s out of newer than 82

mickman77 · 12-05-2009, 02:33 AM

Sorrry 2tons, I've gotta agree with bigv. The 205 I bought last weekend came out of an 87 K3500 (took it out myself). It had the SM465 true enough BUT, the transfer had a 32 spline female input...SOOO, the 465 musta had a 32 male output. Not 10.

BIG V · 12-05-2009, 02:38 AM

sorry my mistake 32 spline not 35 but i was close

*2tons of fun* · 12-05-2009, 02:58 AM

Quote:

Originally Posted by mickman77

Sorrry 2tons, I've gotta agree with bigv. The 205 I bought last weekend came out of an 87 K3500 (took it out myself). It had the SM465 true enough BUT, the transfer had a 32 spline female input...SOOO, the 465 musta had a 32 male output. Not 10.

didnt say they didnt exsits, i said that the 10spline ran longer than 80-82, which you just confirmed.

68 TT · 12-05-2009, 09:47 AM

Any idea what year the change to 32-spline occurred?

11-29-2009, 10:00 PM	#1
hillbillyrider Registered User Join Date: Nov 2009 Location: stinnett, ky Posts: 50	4x4 trans what years will work i have a 77 model chevy 4x4. it has the bulldog 4 speed in it. the transmission busted the other day. i was wondering what years will interchange on the trans. i want a direct bolt in. thanks in advance

11-30-2009, 09:45 PM	#2
BIG V Registered User Join Date: Jul 2009 Location: Northern California Posts: 411	Re: 4x4 trans what years will work the Bulldog as you call it is the sm465 it will work with 4wd models only from 1972-80 the earlier ones didnt have syncros the later modelones has syncros on the 1st gear

11-30-2009, 10:02 PM	#3
hillbillyrider Registered User Join Date: Nov 2009 Location: stinnett, ky Posts: 50	Re: 4x4 trans what years will work thanks, thats what i needed to know

12-01-2009, 02:26 AM	#4
sailed2japan Jonny Join Date: Apr 2008 Location: Outside the Box, Austin,TX Posts: 741	Re: 4x4 trans what years will work Will earlier/later models not bolt up? __________________ 1966 C30, Cummins, stacks, and a flat bed in progress... "Honor.....simply put, A veteran - whether active duty, retired, national guard or reserve is someone who, at one time in his life, wrote a blank check made payable to 'The United States of America', for an amount of 'up to and including his life.' That is Honor, and there are way too many people in this country who no longer understand it." -AEC Hundley USNR

12-03-2009, 02:39 AM	#7
hillbillyrider Registered User Join Date: Nov 2009 Location: stinnett, ky Posts: 50	Re: 4x4 trans what years will work heard dat. thanks for the replies. picked up a trans and t-case yesterday for $400. and it came out of a 77. imagine that, could hardly find one and when i did, its the same year as mine.

12-03-2009, 12:18 PM	#9
charlie diaz Registered User Join Date: May 2005 Location: Colorado Posts: 138	Re: 4x4 trans what years will work also, the 205 was replaced by the np208 in 1985

12-05-2009, 02:33 AM	#11
mickman77 Registered User Join Date: Nov 2008 Location: The land of fruits and nuts, Kingsburg CA Posts: 44	Re: 4x4 trans what years will work Sorrry 2tons, I've gotta agree with bigv. The 205 I bought last weekend came out of an 87 K3500 (took it out myself). It had the SM465 true enough BUT, the transfer had a 32 spline female input...SOOO, the 465 musta had a 32 male output. Not 10. __________________ '77 K20 LWB 454, NV4500, NP205, 4.10's rollin on 33's passin everything but a gas station.

12-05-2009, 02:38 AM	#12
BIG V Registered User Join Date: Jul 2009 Location: Northern California Posts: 411	Re: 4x4 trans what years will work sorry my mistake 32 spline not 35 but i was close

12-05-2009, 09:47 AM	#14
68 TT Still plays with trucks Join Date: Jul 2009 Location: Spokane, WA Posts: 3,556	Re: 4x4 trans what years will work Any idea what year the change to 32-spline occurred? __________________ miSSed opportunity - ground up creation of an AWD 1994 454 SS that never was http://67-72chevytrucks.com/vboard/s...d.php?t=795577 69 C10 shortbed stepside 400 small block - built like what a super sport truck could have been 69 K20 lwb TBI 350 4L60E NP208 14-bolt Dana-44 w/disc 68 Camaro SS / RS 500hp 439 inch roller cam big block 4L80E 79 Malibu TPI 350 4L60 w/ Z28 steering & sway bars



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