WTF? Not a 258 crank!?!?

Swaping 258 to 4.0, 4.0 parts to 258 etc!
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Kahlis
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Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: ZJ

WTF? Not a 258 crank!?!?

Post by Kahlis »

After weeks of waiting, I finally got my "258" crank in. Unfortunately, it appears the crank is none other than a 242 crank after all.

In the below photo, you can see a side-by-side comparison of the crank I bought (again, listed as a 258 crank) (top) and the crank I pulled from the '91 donor engine (bottom). The top crank has four counterweights, the bottom has eight. From what I read online, a true 258 crank has 12 counterweights. I need someone's expert advice before I go after the company I bought it from.

Any ideas?
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- Lee
1996 ZJ 4.7L Stroker
2004 BMW 325i
2006 Caddy Escalade
jsawduste
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Re: WTF? Not a 258 crank!?!?

Post by jsawduste »

Go to the FAQ section and read the casting numbers.
That way you will know exactly what you have.
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Kahlis
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Vehicle Year: 1996
Vehicle Make: Jeep
Vehicle Model: ZJ

Re: WTF? Not a 258 crank!?!?

Post by Kahlis »

Yeah, I did after posting. Looks like I have a four counterweight 258 crank. Good news!

Although the seller didn't include the connecting rods as listed in his eBay listing. :( Gotta contact him about that.
- Lee
1996 ZJ 4.7L Stroker
2004 BMW 325i
2006 Caddy Escalade
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