What transfer case do I have, H type pattern - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**71swb4x4** · 03-27-2005, 11:31 PM

The TC in my 70 Blazer has been replaced.
2 high is to the left and down.
4 low is to the right and up
N is to the right
4 high is to the right and down
Anyone know what it is by the shift pattern? I will try to get pictures tomorrow.
Thanks!
Shawn

1969 GMC · 03-27-2005, 11:32 PM

sounds like a dana 20 to me. np205 shifts in a straight line.

**JIMs70GMC** · 03-28-2005, 07:11 AM

I second dana20, had one in a scout II.

Blazer1970 · 03-28-2005, 08:01 AM

Dana 20, and that would most likely be the case that came in the truck. What tranny does it have?

Hoods69BadBowTie · 03-28-2005, 02:39 PM

I would also have to say dana 20.
-Later

krue · 03-30-2005, 01:19 AM

Well I thought I had a dana 20 behind my 250 / 3 speed but mine shifts in a straight line.

CraigS · 03-30-2005, 08:06 PM

Dana 20s shift in a straight line, most of the time. I don't know what GM may have done to them, but there is also a "J" shift pattern in early Broncos.

Blazer1970 · 03-31-2005, 07:52 AM

Quote:

Originally Posted by CraigS

Dana 20s shift in a straight line, most of the time. I don't know what GM may have done to them, but there is also a "J" shift pattern in early Broncos.

It is actually a J pattern in the Blazers also, not an H.

**special-K** · 04-02-2005, 02:54 PM

I had a Dana20(straight pattern)behind the 3spd manual in a `71 K/5.

03-27-2005, 11:31 PM	#1
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,499	What transfer case do I have, H type pattern The TC in my 70 Blazer has been replaced. 2 high is to the left and down. 4 low is to the right and up N is to the right 4 high is to the right and down Anyone know what it is by the shift pattern? I will try to get pictures tomorrow. Thanks! Shawn __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

03-27-2005, 11:32 PM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	sounds like a dana 20 to me. np205 shifts in a straight line. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

03-28-2005, 07:11 AM	#3
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	I second dana20, had one in a scout II. __________________ 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

03-28-2005, 08:01 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Dana 20, and that would most likely be the case that came in the truck. What tranny does it have? __________________ Tim

03-28-2005, 02:39 PM	#5
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	I would also have to say dana 20. -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!!

03-30-2005, 01:19 AM	#6
krue Designated A-hole! Join Date: Mar 2003 Location: South Mississippi Posts: 36,448	Well I thought I had a dana 20 behind my 250 / 3 speed but mine shifts in a straight line. __________________ "If it ain't broke, fix it 'til it is!" Being stupid ain't illegal. We're Still Debt Free Except for the House!!! www.daveramsey.com 70 GMC SWB Stepside project "Green Booger" soon to be 6.0l/4l80e 93 S-10 "Poppaw's Truck"

03-30-2005, 08:06 PM	#7
CraigS Registered User Join Date: Dec 2000 Location: Gresham, OR, USA Posts: 106	Dana 20s shift in a straight line, most of the time. I don't know what GM may have done to them, but there is also a "J" shift pattern in early Broncos. __________________ 72 GMC K20, 454, TH350 00 GMC Yukon 66 Ford Bronco

04-02-2005, 02:54 PM	#9
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	I had a Dana20(straight pattern)behind the 3spd manual in a `71 K/5. __________________ "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 ~

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