LT1 xj? - Pirate4x4.Com : 4x4 and Off-Road Forum

85NIGOTA · 06-21-2003, 12:53 PM

I have a LT1 engine, i was looking to swap it into a 4 banger xj. Can this be done? Any suggestions will help thanks

NE-RokToy · 06-21-2003, 01:52 PM

V-8's actually fit really nice, I wouldnt start with an XJ as a project vehicle however. But what ever floats your boat.

Johann · 06-21-2003, 07:05 PM

What year 4 liter?

The really early ones (pre 87?) have a different fire wall that causes some problems. But even that can be overcome. There is a guy local that has a chevy 305 in his.

NAXJA is your best source for all things XJ

Thump · 06-22-2003, 02:01 AM

I wouldn't recommend an LT-1 into a Jeep, or any vehicle that could see water splashing into the engine compartment.

This is because the LT-1 uses an optispark ignition system that is a big placenta-looking "distributor" mounted directly to the engine behind and below the water pump. These are very susceptible to moisture and other contaminants in the engine bay (there is actually a note to NOT pressure wash a vette engine due to this part).
The early one's had a sealed system that wasn't too well sealed and was problematic from the start. Later on they put a vent and drain in, but that didn't work worth a crap either.

To change these things out is not something I would want to do on the trail, and they are almost too expensive to be carrying a spare around anyway.

Sorry to be the voice of warning, but I don't want a fellow Jeeper stuck on the trail for something like this.

nobody20 · 06-22-2003, 09:00 AM

There are a couple of XJ's out there that have an LT-1. I saw one from the SF Bay area that had one and it was a sweet swap.

You may want to consider trading your LT-1 for another engine. I have some recommendations, but don't know about how much money you want to spend.

There are ways to remove the high-voltage from the opti.
http://www.pirate4x4.com/forum/showt...highlight=ltcc

Also, you can remove the opti and install HEI distributor

http://www.pirate4x4.com/forum/showt...highlight=opti

http://www.pirate4x4.com/forum/showt...highlight=opti

http://www.pirate4x4.com/forum/showt...highlight=opti

http://www.pirate4x4.com/forum/showt...highlight=opti

http://www.pirate4x4.com/forum/showt...&highlight=lt1

You might want to look around these forums:
http://www.lt4.com/cgi-bin/bbs/config.cgi
http://web.camaross.com/forums/
http://www.f-body.com/index.html/

BTW noob find out about SEARCH

85NIGOTA · 06-22-2003, 01:37 PM

Yea i dont know if im going to do it or not, i just have the engine, im going to build a wheeler, and i found a cheap xj so thats why im using it as a platform. i have big plans for it. I think ill just keep the stock engine, i found a 4.0L so that should last for awhile. Thanks for ur help

06-21-2003, 12:53 PM	#1 (permalink)
85NIGOTA Registered User Join Date: Jun 2003 Member # 20613 Location: Washington Posts: 704	LT1 xj? I have a LT1 engine, i was looking to swap it into a 4 banger xj. Can this be done? Any suggestions will help thanks

06-21-2003, 01:52 PM	#2 (permalink)
NE-RokToy Registered User Join Date: Feb 2000 Member # 62 Location: Omaha NE Posts: 5,992	V-8's actually fit really nice, I wouldnt start with an XJ as a project vehicle however. But what ever floats your boat. __________________ Jeff Neves

06-21-2003, 07:05 PM	#3 (permalink)
Johann Registered User Join Date: Apr 2001 Member # 4251 Location: NC USA Posts: 1,402	What year 4 liter? The really early ones (pre 87?) have a different fire wall that causes some problems. But even that can be overcome. There is a guy local that has a chevy 305 in his. NAXJA is your best source for all things XJ __________________ Details removed for clarity

06-22-2003, 02:01 AM	#4 (permalink)
Thump Dummer'n Moose Poop Join Date: May 2000 Member # 789 Location: 2 seasons: Summer and Summer's Coming Posts: 1,246	I wouldn't recommend an LT-1 into a Jeep, or any vehicle that could see water splashing into the engine compartment. This is because the LT-1 uses an optispark ignition system that is a big placenta-looking "distributor" mounted directly to the engine behind and below the water pump. These are very susceptible to moisture and other contaminants in the engine bay (there is actually a note to NOT pressure wash a vette engine due to this part). The early one's had a sealed system that wasn't too well sealed and was problematic from the start. Later on they put a vent and drain in, but that didn't work worth a crap either. To change these things out is not something I would want to do on the trail, and they are almost too expensive to be carrying a spare around anyway. Sorry to be the voice of warning, but I don't want a fellow Jeeper stuck on the trail for something like this. __________________ Glenn I'm a man, but I can change, if I have to, I guess- Man's Prayer (Red Green)

06-22-2003, 09:00 AM	#5 (permalink)
nobody20 Registered User Join Date: Jun 2002 Member # 12393 Location: Sin City Posts: 1,051	There are a couple of XJ's out there that have an LT-1. I saw one from the SF Bay area that had one and it was a sweet swap. You may want to consider trading your LT-1 for another engine. I have some recommendations, but don't know about how much money you want to spend. There are ways to remove the high-voltage from the opti. http://www.pirate4x4.com/forum/showt...highlight=ltcc Also, you can remove the opti and install HEI distributor http://www.pirate4x4.com/forum/showt...highlight=opti http://www.pirate4x4.com/forum/showt...highlight=opti http://www.pirate4x4.com/forum/showt...highlight=opti http://www.pirate4x4.com/forum/showt...highlight=opti http://www.pirate4x4.com/forum/showt...&highlight=lt1 You might want to look around these forums: http://www.lt4.com/cgi-bin/bbs/config.cgi http://web.camaross.com/forums/ http://www.f-body.com/index.html/ BTW noob find out about SEARCH __________________ 79 CJ-5 a bunch of stuff but no chrome, no Bestop, no Genuine Steel and no Steel Horse. 383 LT-4. D60, D44, D300 4:1, SM420, SOA, 4-link w/double shackles, etc. 88 YJ, 350TPI, 700R4, D300 4:1, rear SOA D44 w/Warn floating axles, coil front D44 w/Warn Axles

06-22-2003, 01:37 PM	#6 (permalink)
85NIGOTA Registered User Join Date: Jun 2003 Member # 20613 Location: Washington Posts: 704	Yea i dont know if im going to do it or not, i just have the engine, im going to build a wheeler, and i found a cheap xj so thats why im using it as a platform. i have big plans for it. I think ill just keep the stock engine, i found a 4.0L so that should last for awhile. Thanks for ur help

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