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Swapping 3.5L V6s

Posted By: shinnery

Swapping 3.5L V6s - 04/30/09 06:55 AM

What problems will I run into putting a 99 3.5L out of a rolled LHS into a 95 LHS? (3.5L noisy bearings) Have to use the pre OBDII sensors? What else? Injectors? Throttle bodies? Guess it will be easier when I have them side by side next week.
Planning on replacing the Timing Belt and Water Pump just because they will be easier while it is out.
Bryce
Posted By: Ron_M

Re: Swapping 3.5L V6s - 04/30/09 12:20 PM

Doubt this will help, but it's a starting point:

http://www.lhforums.net/forums//showthread.php?t=166

Maybe poke around the forums there,as there is quite a bit of info spread throughout...
Posted By: shinnery

Re: Swapping 3.5L V6s - 05/01/09 05:17 AM

Thanks, I am a member over there. Just bought the 99 LHS and was wanting to get some ideas before I got it here. it is about 150 miles away in Ft. Worth.
Bryce
Posted By: The Shadow

Re: Swapping 3.5L V6s - 05/01/09 12:13 PM

Also try dodgeintrepid.net. They do alot of 2.7 to 3.5 swaps
http://www.carjunky.com/cgi-bin/cars/jump.cgi?ID=22553
Posted By: shinnery

Re: Swapping 3.5L V6s - 05/05/09 07:09 AM

I got it home Friday and it looks like there are LOTS of differences. One throttle body instead of two, individual coils on the plugs, and etc.
Bryce
Posted By: CJK440

Re: Swapping 3.5L V6s - 05/05/09 11:46 AM

I'm fairly certain its a completely different engine.

Best thing you could do is go hit up craigslist etc. for an Intrepid with a blown 2.7 and swap the 3.5 out of the LHS in there. It's much easier than you think and you end up with a cheap version of the Intrepid R/T. Bolt in and plug and play.

So many LH cars have had 2.7's blow and they are cost prohibative to fix. Go get a price on a used 2.7 engine from a junkyard. Yowza!! You can typically find a fairly mint 2.7 car with a bad engine for under a grand.

I have an '01 intrepid with a 3.5 out of a 00 300m. I was going to fix the 2.7. The swap was easier.

Posted By: Clair_Davis

Re: Swapping 3.5L V6s - 05/05/09 11:54 AM

If for no other reason that curiosity, I'd like to see if it was just the upper end - or even just intake for that matter, that changed. I didn't ever get in to these cars, other than a general appreciation for them and lusting after a 300M Special and an Intrepid police package for a while.

Clair
Posted By: shinnery

Re: Swapping 3.5L V6s - 05/06/09 06:13 AM

My friend that has a junk yard says it won't fit. Hollander even has a different number for the bare block.
The general consensus over on lhforems.net is that it won't fit, the pan interferes with a sway bar or strut rod or something. I may look a little about changing the entire front subassembly. Before I go looking for a blown 2.7L I will find another 3.5L for my LHS. I am going to crawl under it and see how bad the crank is damaged first, I guess.
Bryce
Posted By: CJK440

Re: Swapping 3.5L V6s - 05/06/09 12:19 PM

DodgeIntrepid.net has some pretty knowledgable people.

If you decide to part with the 3.5 car don't overlook advertizing it as a great donor for a 2.7 swap.

I bought a 300m with a wrecked front for $1000 and robbed the 3.5 out of it.
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