Rebuilding a 2.5L

[88Wrangles]

OK, I've been throwing around the idea of dropping a 350 in my '88 Wrangler, but recently been thinking about just rebuilding my 4 cyl. I have heard things here and there about what can be done to them to give them more torque.

So, lets get all these things together---what are they???

 

[currupt4130]

high torque cam and the recent rumor is that A, (one) hemi head will bolt directly onto the 2.5L if you bore it over a little, get some borla headers for it, increase the exhaust piping size, cold air intake, and feul injection if its carbuerated

 

[88Wrangles]

Which Hemi head is said to be able to fit on it? Is it the new one on the 350 (5.7L) Hemi's?

 

[currupt4130]

if you can get your hands on an old and a new one for observational purposes, you could kind of outline the bolt patterns... ill have to see which one it is

 

[Snitty]

i really don't see why you'd have to overbore the cylinders

 

[88Wrangles]

i really don't see why you'd have to overbore the cylinders

Ya, that's what I was thinking. How would that change the location of the bolts on the block-connecting it to the head

 

[Junkpile]

:shock: This is the first time I've heard of this. The overbore may be needed to clear the valves.
What else is involved? Coolant passages? valvetrain alignment? compression ratio?

 

[currupt4130]

im not sure of all the specs as far as alignment, ratio and coolant is concerned but yea the overbore is required to clear the valves

 

[Snitty]

the valves still should not open far enough to hit the block.. especially in a hemi head, they are up there

 

[joejeepny]

why??? Drop a 4.0 in it. It fits and parts are easy to come buy.

 

[Snitty]

why??? Drop a 4.0 in it. It fits and parts are easy to come buy.

if you're goin by that, then you might as well drop a 350 in it