Is this a 258?

[dan10101]

Hi all, first post. Starting to gather parts for a stroker. I found this AMC 6 cyl but not sure of the engine size or year. The number on the side of the block says 402A19. Is this a 258? The owner doesn't know and I can't tell from the research I've done so far. Could it be a 199 or some other engine?

First of many questions, I'm sure.
Thanks,
Dan

20170704_220445.jpg

[IH 392]

402A19 should translate to 1971, February, 258CI, 19th day.
If the bellhousing is still on it the starter position will tell if its a 199 (starter on the left side under the manifolds), or a 258 (starter on the right side low by the oil pan).

[dan10101]

It doesn't have a bell housing, but maybe you can tell from this shot where the starter mounts? to me it kinda looks like under the intake/exhaust.

imagejpeg_1.jpg

[dan10101]

The Seller has confirmed it is a 3199962 71 258. Thanks for your help!

[dan10101]

Well I guess I'm starting a stroker build!

[Cheromaniac]

Well I guess I'm starting a stroker build!

If that's indeed a '71 block, the crank might only be suitable for an automatic transmission. The cranks changed to a different casting in '72.

[dan10101]

Good to know. Lucky that I have an Auto.
Thanks,
Dan

[dan10101]

The Crank FAQ states the torqueflight needs an adapter to this crank. (71 258 12 counterweight).

It doesn't mention the AW4 that my 98 XJ uses. Anyone know if there is an adapter needed for this auto?

[Russ Pottenger]

This is a old post, but yes it'll bolt up in front of your AW4.

Because of the 2.500 long snout you will need a spacer.

I sell my billet aluminum spacer cut for a keyway for $35.00

Thanks,
Russ Pottenger
Bishop-Buehl Racing Engines
531 N. Lyall Avenue
West Covina, California 91790
Work (626) 967-1000
Cell (626) 673-2203
Email/PayPal: [email protected]