need help decoding this engine...

[no1udknow]

So I was looking to see the engine configuration on my truck and I cant seem to find out what it is. The casting on the drivers rear is 3970010 which means it is a 68-72 motor but the engine code info on the front dosent match anything. The number stamped on the water pump boss is V111CTYY and there is a partial vin code (which dosent match the truck... not surprised) but the only thing I found that said CTY says its a 400?

[no1udknow]

Originally Posted by no1udknow

So I was looking to see the engine configuration on my truck and I cant seem to find out what it is. The casting on the drivers rear is 3970010 which means it is a 68-72 motor but the engine code info on the front dosent match anything. The number stamped on the water pump boss is V111CTYY and there is a partial vin code (which dosent match the truck... not surprised) but the only thing I found that said CTY says its a 400?

Looks like I fou d it actually, 1976, 350, 165 hp....found a decoder on superchevy.com

[sKnNyPpY]

Have a web link to that decoder? I'm looking for it now.

[geezer#99]

A couple more.

http://www.nastyz28.com/decode.php
http://www.mortec.com/

[no1udknow]

i was going to list the nastyz28.com one, but it was incomplete as far as suffix codes go, this one was awesome

http://www.chevymania.com/partsid/su...fm?block=Small

[sKnNyPpY]

Good one! Just found it.

[Ironangel]

I have the same motor with a different suffix code...Can you run it? V02O5TDJ...Dont mean to hijack the thread, just cant make heads or tails out of that last link. Thanks

[GASoline71]

TDJ = 1972 175 hp 350 with a 4bbl. Or 1980 155hp 350 with a 4bbl... Lots and lots of those made... I have the same code on my '72 GMC's 350

Gary

[no1udknow]

Originally Posted by Ironangel

I have the same motor with a different suffix code...Can you run it? V02O5TDJ...Dont mean to hijack the thread, just cant make heads or tails out of that last link. Thanks

So, you need to use the chevymania link in conjunction with the nastyz28.
You need to get the casting numbers from the right rear just in front of where the bell housing mates up. Should be a leter, 2 numbersm a space, and then another number, that will tell you the year, the single digit at the end will be either a 2 or a 0. Then you take the last 3 letters of the v0205tdj, "tdj" and plug it in to the chevy mania decoder. It says it is either a 1972 350 or a 1980 350. V=Flint, MI factory, 0205 is the month and day it was produced, and tdj means a 350

[sKnNyPpY]

I've got a 26-3970010 which comes to 350 1969-79 but

either V0614TR which is a 78 LeMans 305
or V0614TRJ 72 C30 Truck 350 with a TH400.
or V0614TRC 73 4x4 350

I can't find the date code and don't necessarily want to remove my valve covers. I also have a long water pump with the alternator on the passenger side and compressor on the drivers side with a vintage air replacement of the factory AC.

I know I have a TH350 from replacing seals and a long water pump I can fit my fingers in between. Hope this is a TRJ or TRC replacement. There may be a worn off last digit after the TR...

Attachment 1303460

Attachment 1303461

Attachment 1303462

[Ironangel]

Cool, no wonder I wasnt getting anywhere! I was entering VO2 instead of TDJ...Gary, is your 350 a four bolt? PS. Thanks you guys!

[no1udknow]

Originally Posted by sKnNyPpY

I've got a 26-3970010 which comes to 350 1969-79 but

either V0614TR which is a 78 LeMans 305
or V0614TRJ 72 C30 Truck 350 with a TH400.
or V0614TRC 73 4x4 350

I can't find the date code and don't necessarily want to remove my valve covers. I also have a long water pump with the alternator on the passenger side and compressor on the drivers side with a vintage air replacement of the factory AC.

I know I have a TH350 from replacing seals and a long water pump I can fit my fingers in between. Hope this is a TRJ or TRC replacement. There may be a worn off last digit after the TR...

Attachment 1303460


Attachment 1303461

Attachment 1303462

date code is on the right rear of the engine where the bell hoising bolts up basically oposite the 3970010

[sKnNyPpY]

I think it might be in this junk..the 6 looks visible in the first shot. I will get out the cleaner and the camera tomorrow morning. Thanks!

[sKnNyPpY]

Sorry...indicated better where I think it is in these pics, Thanks for helping and letting me hijack....

[kwmech]

other side, behind the drivers cyl head

[no1udknow]

[sKnNyPpY]

Originally Posted by kwmech

other side, behind the drivers cyl head

Got that one, looking for the date code, pretty sure it is behind the tranny dip stick under that junk



Got this one from the front, too ther may be a worn off last letter C or J

[sKnNyPpY]

Really trying to find the year. Getting confused

From Z28
"Casting Date
Small block casting date is located on driver side (???) rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails.
Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec"

or from Mortec:
http://www.mortec.com/images/diagram1.gif
"Casting number and casting date locations
The diagram above shows where each of the casting identifiers is located on the engine. (1) shows the location of the HEAD CASTING NUMBERS and the HEAD CASTING DATE located under the valve covers, in the rocker arm valley. (2) shows the position of the BLOCK CASTING DATE on the rear ledge of the block near the bell housing mounting surface. If you have an early big block or a late model smallblock, the BLOCK CASTING DATE may be on the passenger side of the engine block, (see 2A), instead of the rear ledge of the block. Some smallblock blocks may also have the BLOCK CASTING DATE on the driver's side of the block. "

[no1udknow]

Originally Posted by sKnNyPpY

Really trying to find the year. Getting confused

From Z28
"Casting Date
Small block casting date is located on driver side (???) rear of block on flange forward of bellhousing. Big block on the right side of engine above the oil pan rails.
Casting Date Example: E038 - (E = Month, 03 = Day, 8 = Last digit of model year (1978)).

Month: A = Jan, B = Feb, C = Mar, D = Apr, E = May, F = Jun, G = July, H = Aug, I = Sep, J = Oct, K = Nov, L = Dec"

or from Mortec:
http://www.mortec.com/images/diagram1.gif
"Casting number and casting date locations
The diagram above shows where each of the casting identifiers is located on the engine. (1) shows the location of the HEAD CASTING NUMBERS and the HEAD CASTING DATE located under the valve covers, in the rocker arm valley. (2) shows the position of the BLOCK CASTING DATE on the rear ledge of the block near the bell housing mounting surface. If you have an early big block or a late model smallblock, the BLOCK CASTING DATE may be on the passenger side of the engine block, (see 2A), instead of the rear ledge of the block. Some smallblock blocks may also have the BLOCK CASTING DATE on the driver's side of the block. "

i think "drivers side" was a typo, I found mine it was on the passenger side just forward of the tranny dip stick mount. mine was like *j02 6 *

[sKnNyPpY]

I WILL FIND IT...Brake cleaner and perseverance....or opening the valve covers, but they aren't leaking SOOO...(it runs pretty great shut up and drive ur dang truck idjit...)

[no1udknow]

Originally Posted by sKnNyPpY

Got this one from the front, too ther may be a worn off last letter C or J

Attachment 1303536

i used a razor blade and scraped the paint off mine by holding the razor blade perfectly perpendicular to the surface, made it very easy to read

[sKnNyPpY]

I've got it!
26-3970010 which comes to 350 1969-80
V0614TRJ 72 C30 Truck 350 with a TH400.
Flint MI June 14 assembled
F122 cast June 12 1972
Not original but a good engine

[GASoline71]

Originally Posted by Ironangel

Cool, no wonder I wasnt getting anywhere! I was entering VO2 instead of TDJ...Gary, is your 350 a four bolt? PS. Thanks you guys!

It sure is.

Gary