jeepguy77 Can you bolt up a 4.0 to a trans that originally had the 2.9 v6 hooked to it or are the bolt patterns different?
tufcj Bolt patterns are different. The 2.8 was a GM built v-6. The firewall is also different between the V-6 and I-6 models. Jeep deepened the center to fit the I-6 in. You can get a 3.4 crate motor from GM that is a lot peppier than the 2.8 from what I'm told, and it is a bolt in. Bob tufcj
jeepguy77 Ok thanks Im asking for a friend who has one and wants to get rid of the powerless v6 and if it was possible I figured the I6 would have been the best swap
tufcj Nope. They used the gutless 2.8, which is a 60* v-6. The 3.8 and 4.3 were the 90* v-6s, which were just a V-8 with 2 cylinders lopped off, and shared the V-8 bolt pattern. Bob
mrtazwrench jeepguy77 wrotev8 bolt pattern huh that gives me an idea :mrgreen: :lo1l: You have the 60 deg pattern, not the V8 pattern.
