72 400 Transmission - The 1947 - Present Chevrolet & GMC Truck Message Board Network

palerider · 03-23-2019, 12:09 AM

Anyone know how to read the plate on the side of this 400 I got other day. reads 72-CJ 428 and the Trans SN from what I found 72 truck year and 396 BB does this sound correct or ? Thanks

palerider · 03-23-2019, 10:16 AM

any trans guys here ??

**jocko** · 03-23-2019, 01:31 PM

There were no 396 engines in 72 (so am not sure the SN lookup you used is reliable), however, TH400 would be the correct trans for a 72 (2WD only) that came with a 402.

TH400 SN is usually stamped on driver side just above the pan rail - any additional info there?

**Steeveedee** · 03-23-2019, 02:01 PM

CJ-428 looks like F*%d nomenclature.

Somebody will turn up eventually who can tell you what the CJ means.

palerider · 03-23-2019, 02:18 PM

The CJ stands for chevy truck or Suburban 72 was year I guess the one I used shows 396 in 72 for 3/4 ton suburban I will post the site when I get home what site you all using to decode.?

palerider · 03-23-2019, 02:20 PM

I think the 428 is year code?

**FirstOwner69** · 03-23-2019, 03:59 PM

There is a lot of discussion about decoding engines and transmissions in these threads including discussion about my TH400.

http://67-72chevytrucks.com/vboard/s...hlight=69t+328

http://67-72chevytrucks.com/vboard/s...69t+328&page=3

Do you have a picture of the tag that is riveted to your transmission?

I believe the J in the code (CJ) you supplied indicates it is for a big block.

03-23-2019, 12:09 AM	#1
palerider Registered User Join Date: Sep 2013 Location: Camel Hump Virginia Posts: 57	72 400 Transmission Anyone know how to read the plate on the side of this 400 I got other day. reads 72-CJ 428 and the Trans SN from what I found 72 truck year and 396 BB does this sound correct or ? Thanks

03-23-2019, 10:16 AM	#2
palerider Registered User Join Date: Sep 2013 Location: Camel Hump Virginia Posts: 57	Re: 72 400 Transmission any trans guys here ??

03-23-2019, 01:31 PM	#3
jocko Senior Member Join Date: Oct 2009 Location: Godley, TX Posts: 17,995	Re: 72 400 Transmission There were no 396 engines in 72 (so am not sure the SN lookup you used is reliable), however, TH400 would be the correct trans for a 72 (2WD only) that came with a 402. TH400 SN is usually stamped on driver side just above the pan rail - any additional info there?

03-23-2019, 02:01 PM	#4
Steeveedee Who Changed This? Join Date: Jan 2013 Location: Simi Valley, CA Posts: 10,946	Re: 72 400 Transmission CJ-428 looks like F*%d nomenclature. Somebody will turn up eventually who can tell you what the CJ means. __________________ ~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA

03-23-2019, 02:18 PM	#5
palerider Registered User Join Date: Sep 2013 Location: Camel Hump Virginia Posts: 57	Re: 72 400 Transmission The CJ stands for chevy truck or Suburban 72 was year I guess the one I used shows 396 in 72 for 3/4 ton suburban I will post the site when I get home what site you all using to decode.?

03-23-2019, 02:20 PM	#6
palerider Registered User Join Date: Sep 2013 Location: Camel Hump Virginia Posts: 57	Re: 72 400 Transmission I think the 428 is year code?

03-23-2019, 03:59 PM	#7
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,854	Re: 72 400 Transmission There is a lot of discussion about decoding engines and transmissions in these threads including discussion about my TH400. http://67-72chevytrucks.com/vboard/s...hlight=69t+328 http://67-72chevytrucks.com/vboard/s...69t+328&page=3 Do you have a picture of the tag that is riveted to your transmission? I believe the J in the code (CJ) you supplied indicates it is for a big block.

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