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VIN Help

VIN Help
Nomad127

Nomad127

Jeeper
Posts
208
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Location
Austin, TX
Vehicle(s)
'73 CJ5 with '84 258, D30/D44
I've looked all over the various forums and many other Jeep and engine info sites but still can't figure out what my engine actually is. The PO said something about the engine coming from an oilrig but he was an idiot so I didn't pay much attention. Here's what I know:

  • The body is a '73 CJ5 that originally came with a AMC 304 based on the body VIN.
  • The engine block does not have any stamps or markings on the passenger side.
  • 158 84 stamped closer to the front of the block.
  • EF3235444 stamped closer to mid-rear of the block.
  • B2 (maybe BZ) stamped just above the longer number
  • H3 stamped closer to the Transmission .
  • Manifold has 6-1-84 on a small tag and 3237096-2W stamped next to that.
Any Ideas? Thanks in advance.
 
ftwflh said:
This may help
Vehicle Identification Number: Jeep
Click to expand...
I've got the VIN of the body which is a '73, 3 speed, AMC 304 engine, etc. but the engine has been swapped out. I'm trying to find out where this engine came from.

I also have no clue about the frame as there are not any numbers stamped in the original spot on the passenger side frame rail just behind the front wheel area. Haven't checked the rear spot behind the passenger wheel and may do so when I change the body mounts. Thanks though.
 
looked up engine code specs. here goes...quote "engine build code is located at the centre, upper right side of the engine block. The Engine Code consists of six (6) digits with either alphabetical or numerical characters, and may be interpreted as follows: FIRST DIGIT / Year...4 = 1971 ...5 = 1972 ... 6 = 1973. SECOND and THIRD DIGIT / Month ie 01>12. FOURTH DIGIT / Type... A = SIX-AMC 258 i6 / 4.2l Single Bbl. Carb 8.0 To 1. B = Six-AMC 258 i6 / 4.2l Single Bbl Carb 7.6 To 1 L/C (low compression). E = Six-AMC 232 i6 Single Bbl Carb 8.0 To 1. F = Six-AMC 232 i6 Single Bbl Carb 7.5 To 1. FIFTH and SIXTH DIGIT / Day of Month." Other years are possible, I just dug out this particular manual to start with. Happy hunting./wwwthreads_images/icons/smile.gif

This is from a post is Off-Road.com forums
 
Busted Knuckles said:
1981-1985 AMC 258 i6 / 4.2l , per the 323544.
Click to expand...

That would make sense as I know its not the original engine. The tag on the manifold and stamping on the block both have "84" so my guess is that's the year. Where did you look-up that engine code? Thanks!

ftwflh said:
looked up engine code specs. here goes...quote "engine build code is located at the centre, upper right side of the engine block. The Engine Code consists of six (6) digits with either alphabetical or numerical characters, and may be interpreted as follows: FIRST DIGIT / Year...4 = 1971 ...5 = 1972 ... 6 = 1973. SECOND and THIRD DIGIT / Month ie 01>12. FOURTH DIGIT / Type... A = SIX-AMC 258 i6 / 4.2l Single Bbl. Carb 8.0 To 1. B = Six-AMC 258 i6 / 4.2l Single Bbl Carb 7.6 To 1 L/C (low compression). E = Six-AMC 232 i6 Single Bbl Carb 8.0 To 1. F = Six-AMC 232 i6 Single Bbl Carb 7.5 To 1. FIFTH and SIXTH DIGIT / Day of Month." Other years are possible, I just dug out this particular manual to start with. Happy hunting./wwwthreads_images/icons/smile.gif

This is from a post is Off-Road.com forums
Click to expand...
That would work if it was a early model AMC 258 i6 / 4.2l but there is nothing stamped on the right side. All stamping is on the left (driver) side. If this is an '84, and I now believe it is, maybe they changed sides. I've got more digging to do and thanks for taking the time to help. Much appreciated.
 
I just googled amc engine codes
 
Nomad127 said:
That would make sense as I know its not the original engine. The tag on the manifold and stamping on the block both have "84" so my guess is that's the year. Where did you look-up that engine code? Thanks!


That would work if it was a early model AMC 258 i6 / 4.2l but there is nothing stamped on the right side. All stamping is on the left (driver) side. If this is an '84, and I now believe it is, maybe they changed sides. I've got more digging to do and thanks for taking the time to help. Much appreciated.
Click to expand...


Out of a Block Casting numbers Book. The aftermarket, keeps track of what was built when for parts and interchangability reasons, so the compile all this info. That block was made between those years and interchanges between those model years.
 
I am trying to find out why I only have 13 numbers/ letters in my VIN#? I am trying to find out the history of my 1980 Jeep CJ5 . Any help out there? My vin #'s are: J0M83AB709220

Thank you, Tinman 2
 
Because the 80 CJ5 only has 13 numbers in the vin. The first 7 give the info. The last 6 are simply sequential serial numbers. You should be able to find a vin decoder through google. 1980 CJ5 vin decoder. Quadratech use to have a good one
 
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