Lee Ayrton

You are quite welcome. I'd done some of that legwork before so part of
it was simply mining my old posts.

Thomas Pedersen wrote:
> Thanks very much for your reply :-)
>
>

Lee Ayrton

You are quite welcome. I'd done some of that legwork before so part of
it was simply mining my old posts.

Thomas Pedersen wrote:
> Thanks very much for your reply :-)
>
>

Lee Ayrton

You are quite welcome. I'd done some of that legwork before so part of
it was simply mining my old posts.

Thomas Pedersen wrote:
> Thanks very much for your reply :-)
>
>

Rich

About 15 years ago I rebuilt an AMC 304 for my first CJ7. Fortunately, I had
a buddy who worked for AMC in Kenosha, WI. He helped me out with one of my
first builds. He also turned me on to a bunch of parts and info. The AMC
304, 360 390 and 401 blocks were from the same basic casting. So much so
that I had complete heads, cam, intake lifters, rods etc right out of a 390
that just bolted right on. The kicker for me was the heads were factory
stamped XX experimental heads the had been ported and polished with 3 angle
valve jobs and custom valves that were so big they almost touched each
other. When the engine went together it ran like a raped ape. Drank fuel
like a fish too. Anyway the only difference between the engines "basically"
is bore and stroke. You could literally build a 390 from a 304 by boring the
block and putting in a different crank, pistons and connecting rods. Some
years the block did change some but not enough where you can't interchange
most parts.

--
Rich Harris :1986 CJ7, Detroits F/R, 4:10's, 33"BFGMT's, Mopar F/I, 4.0L
head, Rubicon Express 2.5" Wrangler springs, Procomp MX6 Shocks, and a bunch
more fun stuff. To Reply; shave my hair.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:dqpdf9$2iv$1@reader2.panix.com...
>
> If you go here: <URL:http://www.amcrc.com/tech/tech.html>
> and page down to the section "The AMC/Jeep V8 (290cid, 304cid, 343cid,
> 360cid, 390cid, 401cid)" you'll find these two links:
>
> "V8 Cylinder Head identification information by Casting Numbers"
> <URL:http://amccf.com/tech/heads.xls> An Excel-format chart that lists
> head casting numbers from 1970 to 1981.
>
> A few lines down you'll find "V8 Engine Specifications (Dimensions,
> Camshafts, Connecting Rods, Pistons... (from '75 TSM)"
> <URL:http://amccf.com/tech/v8_specs.html>. It might be useful to you.
> Note that a lot of the sections are common for the 304, 360 and 401.
>
> This link: <URL:http://www.butlers-a1.com/amcm.htm> isn't very detailed
> for your application but it might help someone. It gives block, head and
> crank casting numbers for a variety of AMC engines.
>
> You of course know that the easiest way to ID and date an AMC engine is to
> decode the Engine Day Build Code:
> engine<URL:http://www.amcrc.com/tech/engine.html> Of course since your
> engine has been remanned it might not have the original tags on it.
>
> This guy says that "the AMC 290, 304, 343, 360, 390, and 401 all share the
> same external specifications, and the intake manifolds interchange." See:
> <URL:http://www.carcraft.com/techfaq/116_9906_guide/index3.html> (A
> junkyard engine spotter's guide.)
>
> This site agrees:
> <URL:http://www.planethoustonamx.com/main/amc_engine_casting_numbers.htm>
> All AMC V8s were made from the same mold, the differences are all in the
> bode and stroke. Absent a valid EDBC it looks like the best you can hope
> to do is establish a range of years that your block was made.
>
>
> Thomas Pedersen wrote:
>> I'm replacing my old 360 with a remanufactured 304 in my CJ7. Is it
>> possible to tell from which year an AMC engine is build ?
>>
>> Any other things that I should consider, for example 360 parts that
>> doesn't fit on a 304 ?
>>
>> Regards,
>> Thomas
>>

Rich

About 15 years ago I rebuilt an AMC 304 for my first CJ7. Fortunately, I had
a buddy who worked for AMC in Kenosha, WI. He helped me out with one of my
first builds. He also turned me on to a bunch of parts and info. The AMC
304, 360 390 and 401 blocks were from the same basic casting. So much so
that I had complete heads, cam, intake lifters, rods etc right out of a 390
that just bolted right on. The kicker for me was the heads were factory
stamped XX experimental heads the had been ported and polished with 3 angle
valve jobs and custom valves that were so big they almost touched each
other. When the engine went together it ran like a raped ape. Drank fuel
like a fish too. Anyway the only difference between the engines "basically"
is bore and stroke. You could literally build a 390 from a 304 by boring the
block and putting in a different crank, pistons and connecting rods. Some
years the block did change some but not enough where you can't interchange
most parts.

--
Rich Harris :1986 CJ7, Detroits F/R, 4:10's, 33"BFGMT's, Mopar F/I, 4.0L
head, Rubicon Express 2.5" Wrangler springs, Procomp MX6 Shocks, and a bunch
more fun stuff. To Reply; shave my hair.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:dqpdf9$2iv$1@reader2.panix.com...
>
> If you go here: <URL:http://www.amcrc.com/tech/tech.html>
> and page down to the section "The AMC/Jeep V8 (290cid, 304cid, 343cid,
> 360cid, 390cid, 401cid)" you'll find these two links:
>
> "V8 Cylinder Head identification information by Casting Numbers"
> <URL:http://amccf.com/tech/heads.xls> An Excel-format chart that lists
> head casting numbers from 1970 to 1981.
>
> A few lines down you'll find "V8 Engine Specifications (Dimensions,
> Camshafts, Connecting Rods, Pistons... (from '75 TSM)"
> <URL:http://amccf.com/tech/v8_specs.html>. It might be useful to you.
> Note that a lot of the sections are common for the 304, 360 and 401.
>
> This link: <URL:http://www.butlers-a1.com/amcm.htm> isn't very detailed
> for your application but it might help someone. It gives block, head and
> crank casting numbers for a variety of AMC engines.
>
> You of course know that the easiest way to ID and date an AMC engine is to
> decode the Engine Day Build Code:
> engine<URL:http://www.amcrc.com/tech/engine.html> Of course since your
> engine has been remanned it might not have the original tags on it.
>
> This guy says that "the AMC 290, 304, 343, 360, 390, and 401 all share the
> same external specifications, and the intake manifolds interchange." See:
> <URL:http://www.carcraft.com/techfaq/116_9906_guide/index3.html> (A
> junkyard engine spotter's guide.)
>
> This site agrees:
> <URL:http://www.planethoustonamx.com/main/amc_engine_casting_numbers.htm>
> All AMC V8s were made from the same mold, the differences are all in the
> bode and stroke. Absent a valid EDBC it looks like the best you can hope
> to do is establish a range of years that your block was made.
>
>
> Thomas Pedersen wrote:
>> I'm replacing my old 360 with a remanufactured 304 in my CJ7. Is it
>> possible to tell from which year an AMC engine is build ?
>>
>> Any other things that I should consider, for example 360 parts that
>> doesn't fit on a 304 ?
>>
>> Regards,
>> Thomas
>>

Rich

About 15 years ago I rebuilt an AMC 304 for my first CJ7. Fortunately, I had
a buddy who worked for AMC in Kenosha, WI. He helped me out with one of my
first builds. He also turned me on to a bunch of parts and info. The AMC
304, 360 390 and 401 blocks were from the same basic casting. So much so
that I had complete heads, cam, intake lifters, rods etc right out of a 390
that just bolted right on. The kicker for me was the heads were factory
stamped XX experimental heads the had been ported and polished with 3 angle
valve jobs and custom valves that were so big they almost touched each
other. When the engine went together it ran like a raped ape. Drank fuel
like a fish too. Anyway the only difference between the engines "basically"
is bore and stroke. You could literally build a 390 from a 304 by boring the
block and putting in a different crank, pistons and connecting rods. Some
years the block did change some but not enough where you can't interchange
most parts.

--
Rich Harris :1986 CJ7, Detroits F/R, 4:10's, 33"BFGMT's, Mopar F/I, 4.0L
head, Rubicon Express 2.5" Wrangler springs, Procomp MX6 Shocks, and a bunch
more fun stuff. To Reply; shave my hair.
"Lee Ayrton" <layrton@panix.com> wrote in message
news:dqpdf9$2iv$1@reader2.panix.com...
>
> If you go here: <URL:http://www.amcrc.com/tech/tech.html>
> and page down to the section "The AMC/Jeep V8 (290cid, 304cid, 343cid,
> 360cid, 390cid, 401cid)" you'll find these two links:
>
> "V8 Cylinder Head identification information by Casting Numbers"
> <URL:http://amccf.com/tech/heads.xls> An Excel-format chart that lists
> head casting numbers from 1970 to 1981.
>
> A few lines down you'll find "V8 Engine Specifications (Dimensions,
> Camshafts, Connecting Rods, Pistons... (from '75 TSM)"
> <URL:http://amccf.com/tech/v8_specs.html>. It might be useful to you.
> Note that a lot of the sections are common for the 304, 360 and 401.
>
> This link: <URL:http://www.butlers-a1.com/amcm.htm> isn't very detailed
> for your application but it might help someone. It gives block, head and
> crank casting numbers for a variety of AMC engines.
>
> You of course know that the easiest way to ID and date an AMC engine is to
> decode the Engine Day Build Code:
> engine<URL:http://www.amcrc.com/tech/engine.html> Of course since your
> engine has been remanned it might not have the original tags on it.
>
> This guy says that "the AMC 290, 304, 343, 360, 390, and 401 all share the
> same external specifications, and the intake manifolds interchange." See:
> <URL:http://www.carcraft.com/techfaq/116_9906_guide/index3.html> (A
> junkyard engine spotter's guide.)
>
> This site agrees:
> <URL:http://www.planethoustonamx.com/main/amc_engine_casting_numbers.htm>
> All AMC V8s were made from the same mold, the differences are all in the
> bode and stroke. Absent a valid EDBC it looks like the best you can hope
> to do is establish a range of years that your block was made.
>
>
> Thomas Pedersen wrote:
>> I'm replacing my old 360 with a remanufactured 304 in my CJ7. Is it
>> possible to tell from which year an AMC engine is build ?
>>
>> Any other things that I should consider, for example 360 parts that
>> doesn't fit on a 304 ?
>>
>> Regards,
>> Thomas
>>