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Jeep Wrangler YJ
YJ General Discussion
4.2 5speed ?
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<blockquote data-quote="machoheadgames" data-source="post: 432459" data-attributes="member: 18789"><p>4.2 and 4.0 are almost the same block so any trans bolts up mostly the same. The cranks over the years have different diameters for pilot bearings so that is what causes the most issues with mixing trans and engines, but you can fix that by buying special bearings for each application. </p><p></p><p>The 87-89ish trans sucks, it’s a French one made by Peugeot. The 89-99 AX15 is made by Aisin Warner and miles better. It is also still made brand new in its strongest version so you can just get one of those if you want more than enough strength for a 4.6 stroker. The AX15 shifts real nice and lasts a really long time especially with the right fluid.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 432459, member: 18789"] 4.2 and 4.0 are almost the same block so any trans bolts up mostly the same. The cranks over the years have different diameters for pilot bearings so that is what causes the most issues with mixing trans and engines, but you can fix that by buying special bearings for each application. The 87-89ish trans sucks, it’s a French one made by Peugeot. The 89-99 AX15 is made by Aisin Warner and miles better. It is also still made brand new in its strongest version so you can just get one of those if you want more than enough strength for a 4.6 stroker. The AX15 shifts real nice and lasts a really long time especially with the right fluid. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
4.2 5speed ?
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