4 speed in 84 Silverado - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dirtybird1 · 10-04-2005, 08:39 PM

So is the sm465 the only 4 speed offered in these trucks, trying to figure out what i have. I'm almost positive i have the np205 t-case. As i understand these are both pretty badass pieces? I'll add a pic of my sweet ride that i pretty much stole for 1,200 plus my 91 firebird formula w/ no engine

dirtybird1 · 10-06-2005, 07:08 PM

no one?

1967k30 · 10-06-2005, 07:28 PM

Is your t-case cast iron? If so it could be a 205.Most 81+ trucks had 208 alluminum t-case's.Most all Chevy 4spd's from 70'/71'-89' were sm465's to my knowledge.I haven't ever seen anything else but have heard of others.How much lift do you have and what size tires?

**JIMs70GMC** · 10-06-2005, 08:27 PM

how many pto covers? 2=sm465, 1=np435
I believe the only factory 205s were in the 1 tons and had slip yokes(in the 80s) What's the tc shift pattern? tranny shift pattern? the sm465 first is left and forward.

1967k30 · 10-06-2005, 09:00 PM

Yeah,I forgot to mention that.77'-87' and 88'-91' OBS 1ton's all had 205's except CUCV's.Some were slip yoke,some were not. We have 4 1ton t-case's{86+} and all are fixed yoke.

**special-K** · 10-06-2005, 09:11 PM

Is this a K/30?They`re the only ones with NP205s.

Blazer1970 · 10-07-2005, 06:58 AM

That truck would have come with a 465/208.

67-72williso · 10-08-2005, 06:47 PM

465 with 32 spline output shaft and a 208. The same as my 86 shortbed.
Later Willis

Jason915 · 10-14-2005, 05:22 PM

I have seen a limmited number of those trucks with a smaller 4 speed w/o granny gear and 4th is an OD real rare though

Blazer1970 · 10-14-2005, 07:33 PM

Quote:

Originally Posted by Jason915

I have seen a limmited number of those trucks with a smaller 4 speed w/o granny gear and 4th is an OD real rare though

In a 4WD?

10-04-2005, 08:39 PM	#1
dirtybird1 Registered User Join Date: Apr 2005 Location: Saint Clair, MI Posts: 35	4 speed in 84 Silverado So is the sm465 the only 4 speed offered in these trucks, trying to figure out what i have. I'm almost positive i have the np205 t-case. As i understand these are both pretty badass pieces? I'll add a pic of my sweet ride that i pretty much stole for 1,200 plus my 91 firebird formula w/ no engine Attached Images

10-06-2005, 07:28 PM	#3
1967k30 Senior Member Join Date: Sep 2005 Location: NE Posts: 363	Is your t-case cast iron? If so it could be a 205.Most 81+ trucks had 208 alluminum t-case's.Most all Chevy 4spd's from 70'/71'-89' were sm465's to my knowledge.I haven't ever seen anything else but have heard of others.How much lift do you have and what size tires? __________________ 01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel.

10-06-2005, 08:27 PM	#4
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	how many pto covers? 2=sm465, 1=np435 I believe the only factory 205s were in the 1 tons and had slip yokes(in the 80s) What's the tc shift pattern? tranny shift pattern? the sm465 first is left and forward. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm Last edited by JIMs70GMC; 10-06-2005 at 08:30 PM.

10-06-2005, 09:00 PM	#5
1967k30 Senior Member Join Date: Sep 2005 Location: NE Posts: 363	Yeah,I forgot to mention that.77'-87' and 88'-91' OBS 1ton's all had 205's except CUCV's.Some were slip yoke,some were not. We have 4 1ton t-case's{86+} and all are fixed yoke. __________________ 01 2500 Duramax,6spd,4x4,Not stock. Estimated 550rwhp/1100rwfp on fuel only. 03 3500 Duramax,6spd,4x4,Pac-Brake,not stock Estimated 500rwhp/1000rwfp fuel only 67 K10 in many pieces Little Brothers truck 67 K20 Cummins 12V/NV4500/205, D60/Eaton w/ Detroit,37" Xterrains,crossover steering, Future plans,Twins and lots of fuel.

10-06-2005, 09:11 PM	#6
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,862	Is this a K/30?They`re the only ones with NP205s. __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

10-06-2005, 07:08 PM	#2
dirtybird1 Registered User Join Date: Apr 2005 Location: Saint Clair, MI Posts: 35	no one?

10-07-2005, 06:58 AM	#7
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,510	That truck would have come with a 465/208. __________________ Tim

10-08-2005, 06:47 PM	#8
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	465 with 32 spline output shaft and a 208. The same as my 86 shortbed. Later Willis __________________ Daily Driver: 1970 C-20 400 sbc,sm-465,Dana 61 one ton SRW rear, 3.07 gears, locker. There are three kinds of people: those who make things happen, those who watch things happen, and those who have no idea what happened!

10-14-2005, 05:22 PM	#9
Jason915 Registered User Join Date: Jan 2005 Location: Colorado Springs Posts: 693	I have seen a limmited number of those trucks with a smaller 4 speed w/o granny gear and 4th is an OD real rare though __________________ 1971 GMC K1500 SWB Fleetside, 4" skyjacker softride and, 14 Bolt FF, HD Dana 44 4.10's 1970 K5 TBI conversion lifted etc SOLD 1968 C20 camper truck SOLD “To ban guns because criminals use them is to tell the innocent and law-abiding that their rights and liberties depend not on their own conduct, but on the conduct of the guilty and the lawless.” Jeff Snyder



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