AMC Eagle Den Forum

The Mighty 258 => The Engine => Topic started by: 85AmCfreak on July 24, 2016, 05:01:10 AM

Title: Stroked 258
Post by: 85AmCfreak on July 24, 2016, 05:01:10 AM
Hey guys I was wondering if anyone had dropped a 258 stroker motor into an eagle before? The website says from 1987-90 jeep. Is there any foreseeable issues with this?

Here's the summit link
https://m.summitracing.com/parts/hpe-hp25?seid=srese1&cm_mmc=pla-google-_-shopping-_-srese1-_-atk-high-performance-engines&gclid=Cj0KEQjwztG8BRCJgseTvZLctr8BEiQAA_kBD4tJVRRTdwkq7qSBZrUPJkDLGqes0b0bsjM7bRGDBPMaApj48P8HAQ
Title: Re: Stroked 258
Post by: mudkicker715 on July 24, 2016, 09:50:03 AM
Unless i missed it. It should fit. I think it is a 258 block and not a 4.0l block. So it loks like you can even have your fuel pump on the cam.
Title: Re: Stroked 258
Post by: amcfool1 on July 24, 2016, 01:19:32 PM
hi, that is a 4.0 block. yes it will work in an Eagle, and has been done. Check out Gronks' "tootie", elsewhere on this forum. The only real issue is the mount bosses for the front axle, you may have to fabricate a little, but definitely doable. Also, if that is a 4.0 head, you will need a 4.0 exhaust manifold, the "header" style. Your old 258 intake can be made to work on this head with a little tweaking, or you can run a later 4.0 intake with a carb adapter. again, check out "Tootie" good luck, gz
Title: Re: Stroked 258
Post by: amcfool1 on July 24, 2016, 01:24:25 PM
hi again, you can see "Tootie" in the "Your Eagles" section here, 2nd post from top. gz
Title: Re: Stroked 258
Post by: 85AmCfreak on July 25, 2016, 06:56:22 PM
Didn't the 87–90 Jeeps YJ come with a 258?
Title: Re: Stroked 258
Post by: amcfool1 on July 25, 2016, 11:47:15 PM
yes, they did, but the application for the motor above is Cherokee, Comanche, and Wagoneer, which came with a 4.0. To be sure, i guess a phone call is in order. good luck, gz
Title: Re: Stroked 258
Post by: mudkicker715 on July 26, 2016, 08:10:17 AM
If you look at the fact that the block has a rib that needs to be ground down for the axle bracket to fit kind of tells me 4.0l block.
Title: Re: Stroked 258
Post by: 85AmCfreak on July 26, 2016, 10:41:19 AM
Darn I'm sorry guys, I should have read further into it.