Did they ever put a NP-203 in a early Blazer? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ABLAZN · 02-25-2007, 12:54 AM

I was looking at a 1971-72 Blazer that other day that I am considering buying. Someone has stuffed a 454 under the hood, but it looked like a Turbo 350/NP-203 transfer case combo behind it. I thought that all the Blazers of this vintage had the 205. then again, this might have been a 6 cylinder truck at one time also, if that makes a difference. I am thinking that it may have been a 4 speed originally because there was an after market floor shifter in it and not the column shift that I would expect to see with an auto. I have a couple of other engine/trans combo that I would like to put in it, but I was wondering if this was in any way original. This Blazer is nice enough that I would be willing to sell my current 1970 Blazer to get it.

Critter · 02-25-2007, 02:29 AM

To my knowledge there was never a NP203 in the first generation K5. Somebody likely changed out the entire drivetrain when they put in the 454. Which by the way, there wasn't any factory big blocks in the 1st Gen K5s either. If you think it might have originaly been a manual tranny I would look for remains of clutch linkage. That is usaully a dead givaway...pedal under the floormat, pivot bracket still attached to the frame under the steering colum...etc.

vtblazer · 02-25-2007, 06:57 AM

As Critter stated, sounds like the whole drive train was swapped out for something from a 73 & up.

Your correct about the 205, that's the only T-case our years used.

Have you driven this one yet?

Blazer1970 · 02-25-2007, 08:05 AM

A lot of '69 - '72 Blazers and Jimmys came with Dana 20 transfer cases (so the 205 was not the only case), but no NP203s until '73.

vtblazer · 02-25-2007, 08:50 AM

Quote:

Originally Posted by Blazer1970

A lot of '69 - '72 Blazers and Jimmys came with Dana 20 transfer cases (so the 205 was not the only case), but no NP203s until '73.

Yep, true...my bad.

I thought the 20's were only in the 69/70's, didn't realize they came in the 71/72 models which the inquirey was about.

Good to know.

ABLAZN · 02-25-2007, 11:04 PM

I was 99% sure that was the case (or transfer case). Come to think of it, the thing may be a 208. I really did not spend to much time looking at the drive terrain, I was really trying to check out the body for rust, since we all know what a problem that can be. I did not get a chance to drive it, but I could if I wanted. Thanks for the answers guys. !!!!!

1969k10stepside · 02-25-2007, 11:07 PM

208s were in 80s models and they require a different cv joint IIRC,hold on and I will get ya a pic of a 205 for reference

1969k10stepside · 02-25-2007, 11:11 PM

Here is a pic of a np 205 I pulled from a wrecked 72 cst k5 blazer.It was bolted to a th350.the 4 spds came with 205s too.Only 69-70 blazer/jimmys came with Dana T cases IIRC
Name: 205.jpg
Views: 152
Size: 72.6 KB

ABLAZN · 02-25-2007, 11:26 PM

Thanks for the picture, I also have the a 205 under my 1970 Blazer with a Turbo 400. I know that one was not stock either, but it does have some nice trading value for what I want.

**special-K** · 02-26-2007, 12:12 PM

Quote:

Originally Posted by Blazer1970

A lot of '69 - '72 Blazers and Jimmys came with Dana 20 transfer cases (so the 205 was not the only case), but no NP203s until '73.

...w/3spd manual.

Blazer1970 · 02-26-2007, 07:19 PM

Quote:

Originally Posted by special-K

...w/3spd manual.

Also behind some SM465s, but not TH350s.

**special-K** · 02-26-2007, 07:46 PM

Was that in`69 before the NP205?Help me learn

1969k10stepside · 02-26-2007, 07:51 PM

All this talk and no rockwell 221s?I assume they were never in blazers before chevy started using 205s?

ABLAZN · 02-26-2007, 11:50 PM

I know this is a different question, but since the three speed thing came up, was there ever a three speed with a floor mounted shifter. For that matter, was there ever a floor mounted auto shifter?

**special-K** · 02-27-2007, 06:46 AM

Quote:

Originally Posted by ABLAZN

I know this is a different question, but since the three speed thing came up, was there ever a three speed with a floor mounted shifter. For that matter, was there ever a floor mounted auto shifter?

Answer:No

ABLAZN · 03-02-2007, 09:58 PM

UPDATE

I got another chance to look this Blazer over, and this time really look at the transfer case. It is a NP205 which made me very happy with the Turbo 350. I was in such a rush to look at it with the rain coming down that I did not get a good look at it. It is indeed a original 4 speed truck, since it still had the clutch peddle hanging. I did not get to drive it though, the battery was dead from from setting and it need needs a good tune so it will start better. I think my 1970 Blazer is going up for sale so I can pick this one up .

**special-K** · 03-02-2007, 11:04 PM

That`s great to here.Love to see pictures if possible.

02-25-2007, 12:54 AM	#1
ABLAZN Oh..never mind.... Join Date: Aug 2006 Location: Oregon Posts: 588	Did they ever put a NP-203 in a early Blazer? I was looking at a 1971-72 Blazer that other day that I am considering buying. Someone has stuffed a 454 under the hood, but it looked like a Turbo 350/NP-203 transfer case combo behind it. I thought that all the Blazers of this vintage had the 205. then again, this might have been a 6 cylinder truck at one time also, if that makes a difference. I am thinking that it may have been a 4 speed originally because there was an after market floor shifter in it and not the column shift that I would expect to see with an auto. I have a couple of other engine/trans combo that I would like to put in it, but I was wondering if this was in any way original. This Blazer is nice enough that I would be willing to sell my current 1970 Blazer to get it.

02-25-2007, 02:29 AM	#2
Critter Future TOTM Winner Join Date: Aug 2006 Location: Bulverde, TX Posts: 2,692	Re: Did they ever put a NP-203 in a early Blazer? To my knowledge there was never a NP203 in the first generation K5. Somebody likely changed out the entire drivetrain when they put in the 454. Which by the way, there wasn't any factory big blocks in the 1st Gen K5s either. If you think it might have originaly been a manual tranny I would look for remains of clutch linkage. That is usaully a dead givaway...pedal under the floormat, pivot bracket still attached to the frame under the steering colum...etc. __________________ 72 Chevy CST K5 HIGHLANDER BLAZER Getting a 6.0,NV4500,NP205,14BFF (Currently laying all over the place in little pieces) 72 Chevy swb step-side "LS" 6.0 Here's a build thread of sorts 2002 HD2500 Crew Cab, 8.1L Allison 4x4 Daily Driver Check it out www.lsdyno.com Last edited by Critter; 02-25-2007 at 10:05 PM.

02-25-2007, 06:57 AM	#3
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Re: Did they ever put a NP-203 in a early Blazer? As Critter stated, sounds like the whole drive train was swapped out for something from a 73 & up. Your correct about the 205, that's the only T-case our years used. Have you driven this one yet?

02-25-2007, 08:05 AM	#4
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: Did they ever put a NP-203 in a early Blazer? A lot of '69 - '72 Blazers and Jimmys came with Dana 20 transfer cases (so the 205 was not the only case), but no NP203s until '73. __________________ Tim

02-25-2007, 11:04 PM	#6
ABLAZN Oh..never mind.... Join Date: Aug 2006 Location: Oregon Posts: 588	Re: Did they ever put a NP-203 in a early Blazer? I was 99% sure that was the case (or transfer case). Come to think of it, the thing may be a 208. I really did not spend to much time looking at the drive terrain, I was really trying to check out the body for rust, since we all know what a problem that can be. I did not get a chance to drive it, but I could if I wanted. Thanks for the answers guys. !!!!! Last edited by ABLAZN; 02-25-2007 at 11:04 PM.

02-25-2007, 11:07 PM	#7
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Did they ever put a NP-203 in a early Blazer? 208s were in 80s models and they require a different cv joint IIRC,hold on and I will get ya a pic of a 205 for reference

02-25-2007, 11:11 PM	#8
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Did they ever put a NP-203 in a early Blazer? Here is a pic of a np 205 I pulled from a wrecked 72 cst k5 blazer.It was bolted to a th350.the 4 spds came with 205s too.Only 69-70 blazer/jimmys came with Dana T cases IIRC Last edited by 1969k10stepside; 02-25-2007 at 11:15 PM.

02-25-2007, 11:26 PM	#9
ABLAZN Oh..never mind.... Join Date: Aug 2006 Location: Oregon Posts: 588	Re: Did they ever put a NP-203 in a early Blazer? Thanks for the picture, I also have the a 205 under my 1970 Blazer with a Turbo 400. I know that one was not stock either, but it does have some nice trading value for what I want.

02-26-2007, 07:46 PM	#12
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Did they ever put a NP-203 in a early Blazer? Was that in`69 before the NP205?Help me learn __________________ "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 ~

02-26-2007, 07:51 PM	#13
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: Did they ever put a NP-203 in a early Blazer? All this talk and no rockwell 221s?I assume they were never in blazers before chevy started using 205s? Last edited by 1969k10stepside; 02-26-2007 at 07:54 PM.

02-26-2007, 11:50 PM	#14
ABLAZN Oh..never mind.... Join Date: Aug 2006 Location: Oregon Posts: 588	Re: Did they ever put a NP-203 in a early Blazer? I know this is a different question, but since the three speed thing came up, was there ever a three speed with a floor mounted shifter. For that matter, was there ever a floor mounted auto shifter?

03-02-2007, 09:58 PM	#16
ABLAZN Oh..never mind.... Join Date: Aug 2006 Location: Oregon Posts: 588	Re: Did they ever put a NP-203 in a early Blazer? UPDATE I got another chance to look this Blazer over, and this time really look at the transfer case. It is a NP205 which made me very happy with the Turbo 350. I was in such a rush to look at it with the rain coming down that I did not get a good look at it. It is indeed a original 4 speed truck, since it still had the clutch peddle hanging. I did not get to drive it though, the battery was dead from from setting and it need needs a good tune so it will start better. I think my 1970 Blazer is going up for sale so I can pick this one up .

03-02-2007, 11:04 PM	#17
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,851	Re: Did they ever put a NP-203 in a early Blazer? That`s great to here.Love to see pictures if possible. __________________ "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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