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Old 08-13-2010, 10:39 PM   #1
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chev to jeep engine swap

im a new member here and i am about to swap the engine from my wreck 92 z71 into my 2001 TJ. im looking at about $4000 for the rebuild and swap. ive got most of it figured out but here is my question; how can i run my factory tac with the v8? the factory engine is a wimpy 2.5L and im going to a 350.is the tac gonna work going from 4 to 8? ive always heard that a v8 tac wont wor on a 4 cylinder and im sure if that is true it wont work the other way around. what cani can?

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Old 08-13-2010, 10:55 PM   #2
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Welcome to the forum.

I've never seen anyone use the factory guages with a 4banger to V8 swap in a TJ.
Aftermarket guages work great though.

This member did the same swap a long time back from 4banger to LT1 chevy engine....
Shoot him a pm and pick his brain. ......MR.CLIFFORD

Here is a video of his gauges .....

YouTube - str8rage's Channel

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Old 08-13-2010, 11:25 PM   #3
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Can't run the tach but you can run all the other gauges...just use the sending units out of the 4 popper
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Old 08-14-2010, 04:50 PM   #4
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thanx ima have to check him out. all of the sending units will work but the tac? what about the tac from a 4.0L jeep? will it work or is it going to be the same problems as the 2.5L? or where can i get a aftermarket tac that i can put in my cluster?
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Old 08-14-2010, 05:27 PM   #5
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Can't use anything but a V8 tach....if you notice on any aftermarket tach it will either have a switch or colored loops you have to cut for the number of cylinders. An Autometer 3 3/8 tach is close to fitting
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Old 08-14-2010, 09:20 PM   #6
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thanx i found won i jeg for $120 that im liking pretty good. hopefully itll work!
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Old 08-16-2010, 08:05 PM   #7
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what about a radiator? ive got the one out of my wrecked 92 z71 and im wondering if anyone has put a 350 in a tj and what radiator you used and if the one ive got will work?

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