Hey, didn't someone post a while back that some of the aftermarket
blocks have no numbers on them on that machined pad. Maybe it was about
Jasper engines?

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's


Lee Ayrton wrote:
>
> marvin martian wrote:
> > anyone here have a website i can look up engine casting #'s to find out
> > what the motor i just got with my cj rolling chassis is? thought it to
> > be 258 and that is what i was told but i am having my doubts now that it
> > is home. any help greatly appreciated thanks
> >
>
> It took me a while, but I think I've found what you are looking for:
>
> <URL:http://www.amxfiles.com/archive/show.cfm?postid=90288&row=2>
>
> The above URL has a listing covering AMC _head_ casting numbers from
> 1966 to 1979 (you didn't say what year you thought you had). This list
> won't help you sort out a block with a 232 crank from a block with a 258
> crank, but it could help you narrow down the year or ID an engine
> cobbled up from multi-year parts.
>
> <URL:http://www.butlers-a1.com/amcm.htm>
>
> The above URL is probably what you are looking: It gives block casting
> numbers, head casting numbers and crank casting numbers for a variety of
> AMC engines from 1970 to 1993, ranging from the 151ci/2.5L to the 401ci.
>
> <URL:http://www.planethoustonamx.com/parts%20&%20Literature/engine_casting_numbers.htm>
>
> This last won't help you because it only covers AMC V8s from 1957 to
> 1984, but I'm including it here against the chance that someone will
> find it useful.
>
> As Bill and Mike said, the best way to ID the engine is to look for the
> machined pad on the passenger (right) side of the block and decode the
> "Engine Day Build Code". On the other hand, depending on what sort of
> life the engine lead there might be nothing left there to read -- AMC
> didn't strike those stamps very deep on some engines.
>
> <URL:http://members.aol.com/brimiljeep/WebPages/ArchiveJeepSerialNumberPage.html#JeepCJSerialNumbe rLocation>
>
> If you can find a VIN stamped on the right front part of the frame (as
> described in the above URL) you should be able to decode what engine the
> frame originally came with. Good luck with that, though, as I've never
> been able to find one on an older CJ.
>
> Let us know what you find.

 

I found a couple of mentions while I was searching for the below that
some factory warranty replacement blocks had no numbers, but I think
that those were more in relation to cars instead of Jeeps. I guess it
might make sense if AMC only used to day build codes to account for
engines going to the vehicle assembly plant -- the code isn't a serial
number, after all, and had no relation to VINs except displacement.


Mike Romain wrote:
> Hey, didn't someone post a while back that some of the aftermarket
> blocks have no numbers on them on that machined pad. Maybe it was about
> Jasper engines?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
>
> Lee Ayrton wrote:
>
>>marvin martian wrote:
>>
>>>anyone here have a website i can look up engine casting #'s to find out
>>>what the motor i just got with my cj rolling chassis is? thought it to
>>>be 258 and that is what i was told but i am having my doubts now that it
>>>is home. any help greatly appreciated thanks
>>>
>>
>>It took me a while, but I think I've found what you are looking for:
>>
>><URL:http://www.amxfiles.com/archive/show.cfm?postid=90288&row=2>
>>
>>The above URL has a listing covering AMC _head_ casting numbers from
>>1966 to 1979 (you didn't say what year you thought you had). This list
>>won't help you sort out a block with a 232 crank from a block with a 258
>>crank, but it could help you narrow down the year or ID an engine
>>cobbled up from multi-year parts.
>>
>><URL:http://www.butlers-a1.com/amcm.htm>
>>
>>The above URL is probably what you are looking: It gives block casting
>>numbers, head casting numbers and crank casting numbers for a variety of
>>AMC engines from 1970 to 1993, ranging from the 151ci/2.5L to the 401ci.
>>
>><URL:http://www.planethoustonamx.com/parts%20&%20Literature/engine_casting_numbers.htm>
>>
>>This last won't help you because it only covers AMC V8s from 1957 to
>>1984, but I'm including it here against the chance that someone will
>>find it useful.
>>
>>As Bill and Mike said, the best way to ID the engine is to look for the
>>machined pad on the passenger (right) side of the block and decode the
>>"Engine Day Build Code". On the other hand, depending on what sort of
>>life the engine lead there might be nothing left there to read -- AMC
>>didn't strike those stamps very deep on some engines.
>>
>><URL:http://members.aol.com/brimiljeep/WebPages/ArchiveJeepSerialNumberPage.html#JeepCJSerialNumbe rLocation>
>>
>>If you can find a VIN stamped on the right front part of the frame (as
>>described in the above URL) you should be able to decode what engine the
>>frame originally came with. Good luck with that, though, as I've never
>>been able to find one on an older CJ.
>>
>>Let us know what you find.

 

I found a couple of mentions while I was searching for the below that
some factory warranty replacement blocks had no numbers, but I think
that those were more in relation to cars instead of Jeeps. I guess it
might make sense if AMC only used to day build codes to account for
engines going to the vehicle assembly plant -- the code isn't a serial
number, after all, and had no relation to VINs except displacement.


Mike Romain wrote:
> Hey, didn't someone post a while back that some of the aftermarket
> blocks have no numbers on them on that machined pad. Maybe it was about
> Jasper engines?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
>
> Lee Ayrton wrote:
>
>>marvin martian wrote:
>>
>>>anyone here have a website i can look up engine casting #'s to find out
>>>what the motor i just got with my cj rolling chassis is? thought it to
>>>be 258 and that is what i was told but i am having my doubts now that it
>>>is home. any help greatly appreciated thanks
>>>
>>
>>It took me a while, but I think I've found what you are looking for:
>>
>><URL:http://www.amxfiles.com/archive/show.cfm?postid=90288&row=2>
>>
>>The above URL has a listing covering AMC _head_ casting numbers from
>>1966 to 1979 (you didn't say what year you thought you had). This list
>>won't help you sort out a block with a 232 crank from a block with a 258
>>crank, but it could help you narrow down the year or ID an engine
>>cobbled up from multi-year parts.
>>
>><URL:http://www.butlers-a1.com/amcm.htm>
>>
>>The above URL is probably what you are looking: It gives block casting
>>numbers, head casting numbers and crank casting numbers for a variety of
>>AMC engines from 1970 to 1993, ranging from the 151ci/2.5L to the 401ci.
>>
>><URL:http://www.planethoustonamx.com/parts%20&%20Literature/engine_casting_numbers.htm>
>>
>>This last won't help you because it only covers AMC V8s from 1957 to
>>1984, but I'm including it here against the chance that someone will
>>find it useful.
>>
>>As Bill and Mike said, the best way to ID the engine is to look for the
>>machined pad on the passenger (right) side of the block and decode the
>>"Engine Day Build Code". On the other hand, depending on what sort of
>>life the engine lead there might be nothing left there to read -- AMC
>>didn't strike those stamps very deep on some engines.
>>
>><URL:http://members.aol.com/brimiljeep/WebPages/ArchiveJeepSerialNumberPage.html#JeepCJSerialNumbe rLocation>
>>
>>If you can find a VIN stamped on the right front part of the frame (as
>>described in the above URL) you should be able to decode what engine the
>>frame originally came with. Good luck with that, though, as I've never
>>been able to find one on an older CJ.
>>
>>Let us know what you find.

 

I found a couple of mentions while I was searching for the below that
some factory warranty replacement blocks had no numbers, but I think
that those were more in relation to cars instead of Jeeps. I guess it
might make sense if AMC only used to day build codes to account for
engines going to the vehicle assembly plant -- the code isn't a serial
number, after all, and had no relation to VINs except displacement.


Mike Romain wrote:
> Hey, didn't someone post a while back that some of the aftermarket
> blocks have no numbers on them on that machined pad. Maybe it was about
> Jasper engines?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
>
> Lee Ayrton wrote:
>
>>marvin martian wrote:
>>
>>>anyone here have a website i can look up engine casting #'s to find out
>>>what the motor i just got with my cj rolling chassis is? thought it to
>>>be 258 and that is what i was told but i am having my doubts now that it
>>>is home. any help greatly appreciated thanks
>>>
>>
>>It took me a while, but I think I've found what you are looking for:
>>
>><URL:http://www.amxfiles.com/archive/show.cfm?postid=90288&row=2>
>>
>>The above URL has a listing covering AMC _head_ casting numbers from
>>1966 to 1979 (you didn't say what year you thought you had). This list
>>won't help you sort out a block with a 232 crank from a block with a 258
>>crank, but it could help you narrow down the year or ID an engine
>>cobbled up from multi-year parts.
>>
>><URL:http://www.butlers-a1.com/amcm.htm>
>>
>>The above URL is probably what you are looking: It gives block casting
>>numbers, head casting numbers and crank casting numbers for a variety of
>>AMC engines from 1970 to 1993, ranging from the 151ci/2.5L to the 401ci.
>>
>><URL:http://www.planethoustonamx.com/parts%20&%20Literature/engine_casting_numbers.htm>
>>
>>This last won't help you because it only covers AMC V8s from 1957 to
>>1984, but I'm including it here against the chance that someone will
>>find it useful.
>>
>>As Bill and Mike said, the best way to ID the engine is to look for the
>>machined pad on the passenger (right) side of the block and decode the
>>"Engine Day Build Code". On the other hand, depending on what sort of
>>life the engine lead there might be nothing left there to read -- AMC
>>didn't strike those stamps very deep on some engines.
>>
>><URL:http://members.aol.com/brimiljeep/WebPages/ArchiveJeepSerialNumberPage.html#JeepCJSerialNumbe rLocation>
>>
>>If you can find a VIN stamped on the right front part of the frame (as
>>described in the above URL) you should be able to decode what engine the
>>frame originally came with. Good luck with that, though, as I've never
>>been able to find one on an older CJ.
>>
>>Let us know what you find.

 

I found a couple of mentions while I was searching for the below that
some factory warranty replacement blocks had no numbers, but I think
that those were more in relation to cars instead of Jeeps. I guess it
might make sense if AMC only used to day build codes to account for
engines going to the vehicle assembly plant -- the code isn't a serial
number, after all, and had no relation to VINs except displacement.


Mike Romain wrote:
> Hey, didn't someone post a while back that some of the aftermarket
> blocks have no numbers on them on that machined pad. Maybe it was about
> Jasper engines?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
>
> Lee Ayrton wrote:
>
>>marvin martian wrote:
>>
>>>anyone here have a website i can look up engine casting #'s to find out
>>>what the motor i just got with my cj rolling chassis is? thought it to
>>>be 258 and that is what i was told but i am having my doubts now that it
>>>is home. any help greatly appreciated thanks
>>>
>>
>>It took me a while, but I think I've found what you are looking for:
>>
>><URL:http://www.amxfiles.com/archive/show.cfm?postid=90288&row=2>
>>
>>The above URL has a listing covering AMC _head_ casting numbers from
>>1966 to 1979 (you didn't say what year you thought you had). This list
>>won't help you sort out a block with a 232 crank from a block with a 258
>>crank, but it could help you narrow down the year or ID an engine
>>cobbled up from multi-year parts.
>>
>><URL:http://www.butlers-a1.com/amcm.htm>
>>
>>The above URL is probably what you are looking: It gives block casting
>>numbers, head casting numbers and crank casting numbers for a variety of
>>AMC engines from 1970 to 1993, ranging from the 151ci/2.5L to the 401ci.
>>
>><URL:http://www.planethoustonamx.com/parts%20&%20Literature/engine_casting_numbers.htm>
>>
>>This last won't help you because it only covers AMC V8s from 1957 to
>>1984, but I'm including it here against the chance that someone will
>>find it useful.
>>
>>As Bill and Mike said, the best way to ID the engine is to look for the
>>machined pad on the passenger (right) side of the block and decode the
>>"Engine Day Build Code". On the other hand, depending on what sort of
>>life the engine lead there might be nothing left there to read -- AMC
>>didn't strike those stamps very deep on some engines.
>>
>><URL:http://members.aol.com/brimiljeep/WebPages/ArchiveJeepSerialNumberPage.html#JeepCJSerialNumbe rLocation>
>>
>>If you can find a VIN stamped on the right front part of the frame (as
>>described in the above URL) you should be able to decode what engine the
>>frame originally came with. Good luck with that, though, as I've never
>>been able to find one on an older CJ.
>>
>>Let us know what you find.

 

couldnt get exact year but did find out it was a 258 thanks for the help
guys

 

couldnt get exact year but did find out it was a 258 thanks for the help
guys

 

couldnt get exact year but did find out it was a 258 thanks for the help
guys

 

couldnt get exact year but did find out it was a 258 thanks for the help
guys

 

Yer welcome. What year were you hoping for? There were model-year
changes to emission controls and manifolds, and changes in the valve
cover helps mark a few years as well, so if you give us a ball-park on
the year someone here might be able to match it to the engine they have.

Oh, and the engine plant ran on a calendar year schedule, while the
vehicle plant ran on a model-year schedule. This means that the engine
put in by the factory might not have the same year ID as the frame.



marvin martian wrote:
> couldnt get exact year but did find out it was a 258 thanks for the help
> guys
>