What is this engine?

[TWhetten]

I have no idea what motor is on my 715. It is not the tornado. I have crawled all over it trying to find numbers or a make but I can't. It runs great and I am going to sell it, because I just got a complete p-pumped cummins motor, so I would like to know what engine it is to list it. Here are some pictures I thought some of the gurus here might have an idea.

[TWhetten]

also, if I remember right someone years ago said it was an AMC but I am not sure

[randyscycle]

Looks like a 258 AMC 6.

It isn't a Ford becaue the early Ford 6 cylinders (200, 250) had the intake cast onto the head. The 300 had the exhaust on the passenger side if I remember correctly.

Chevy 6's all had a lifter access pan on the right hand side.

Its new enough that it had an EGR port on the intake below the carburetor. probably at least 78 or newer.

[TWhetten]

DANG, that was fast. Thanks. I knew someone would know what it is. Do you know what this engine plus the T-98 tranny with a pto might be worth? The engine runs great, and the tranny works great also, this has been a very trouble free engine and tranny.

[kwai]

258 AMC 6. Good strong reliable motors. Does it have a rochester, carter or weber carb?

[TWhetten]

it has a carter carb

[mojomot]

yeah looks like a 258 to me as well, as far as what they are worth, i got a good used one out of a j truck for 125 bucks, the tranny might be worth about that much to the right buyer.

[Binford]

Yup. 258 I6 (aka 4.2L) AMC Jeep engine. Just like in my CJ. Great engine. Lousy carburetor (Carter BBD).

[randyscycle]

Yup. 258 I6 (aka 4.2L) AMC Jeep engine. Just like in my CJ. Great engine. Lousy carburetor (Carter BBD).

There is a conversion to a Ford Motorcraft 2bbl that makes them a million times better to drive.

The old 258 will last forever.

[gonz]

how about putting fuel injection in from a 4.0 hhigh output jeep?
http://www.geocities.com/035jeep/40L.html

gonz