4bangerjp.com
General Forums => The Mess Hall => Topic started by: damon54 on November 05, 2007, 08:49:02 PM
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I know there were a couple of guys on here that did a similar build to YJ mechanic's 2.5. I am just about finished with mine and here's what was done:
bored .60 over
decked the block
every thing balance
Hesco RV cam
Considering port matching the intake
4.0 Tb w/spacer.]
Now the next is gearing. I would like to drive for a while to get a feel for it but I am running out of time as there is a little one due in March, so if anyone has a suggestion for the gearing let the advice flow.
Oh yea I plan on running 35's.
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Same gearing that's recommended for everyone with a 4banger :whistle:
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Hp increase does not change gearing selection?
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Hp increase does not change gearing selection?
Torque is what really makes a difference. Torque is what gets you moving. Once you're at speed HP is what keep you moving.
The difference probably wouldn't be a huge difference but you could go with 4.88's. Maybe 4.56's... I'm running 4.56's now and I feel it's OK for me but you'll still be shifting through the gears a lot to keep the RPM's up. 5.13:'s would be a good choice for 35's.
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4.88 will work if you have stock axles, the extra HP will help things out a bit.
I'm running 5.38 and 35" tires, it's a little low but works best with the 36" tires that I run offroad. So 5.13 or 5.38 if you have an overdrive tranny like the 5spd.
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I was planning on 4.88's anyway. This is the first engine I have rebuilt and I wanted to make sure that the gearing would be correct
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To these people with turbos and rebuilt engines: how is the ax5 (if that is the tranny you have) holding up to the extra HP? I hear everyone saying that is going to be the first thing to bite the dust if something breaks from the power. I know the dana 35 is weak but the 4.0s come with that axle as well so figured the tranny might be the first problem.