The deck height is about 19mm higher for the longer stroke, but all that means is you need 3.5 timing belt, and you'll have to figure out accessory belt lengths. There will be a problem with the exhaust length too, but if you use 3.5 mani's and downpipes, it should work. You will be increasing air flow, and I'd rather use the 3.5 ecu and harness if possible to get a better match in case the 3.0 maf doesn't have enough range.
Ok. As far as I know, this is a complete engine and they're both Federal - minus the following accessories - alternator, p/s pump, and air compressor. The only things coming off my '97 are the accessories. My '97 has electric fans so no fan, shroud, etc. stuff to deal with.
This is what I found looking through parts lists...
2000-2004 3.0/3.5 exhaust parts. Manifolds, gaskets, pipes, etc.
1997-1999 3.0/3.5 exhaust parts. Manifolds, gaskets, pipes, etc.
2000 3.0/3.5 starter and parts. Only listed for the automatic transmission since there's no 5-speed post 1999 in the US.
1999 3.0/3.5 starter. Same for 3/3.5 but different between manual and automatic transmission vehicles. ??? Solenoid and heat shield are the same on all.
2000 3.0/3.5 air compressor and accessory bracket.
1999 3.0/3.5 air compressor and accessory bracket.
2000 3.0/3.5 power steering, accessory bracket and components.
1999 3.0/3.5 power steering, accessory bracket and components.
2000 3.0/3.5 alternator, stay, tensioner, pulley.
1999 3.0/3.5 alternator, stay, tensioner, pulley.
2000 3.0/3.5 MAF, MAP, all the emission doo-dads.
1997-1999 3.0/3.5 MAF, MAP, all the emission doo-dads.
Now, as far as I can tell, everything (I need to worry about) is interchangeable between the 3.0 and 3.5 for the years 1997-1999. Same for the 3.0/3.5 for the year 2000.
The starter is the same for 3.0L manual trans from 1997-99. So, my existing starter should fit in my m/t bell housing with the new engine.
There's no difference between the 1999 3.5L and the 2000 3.5L, correct? So, there shouldn't be any difference in exhaust. These are both Federal, so.... ???
AFAIKT, that leaves the harness. MAF, MAP, IAC, TPS, ignition coils and power transistor. (did I forget something?) All of which are the same between the 3.0 and 3.5 for 1997-1999 and same for the year 2000. I can't tell if they're the same between 1997-99 and 2000 such that they'll just plug into the existing harness and feed back the correct information for the ECU.
As for the ECU, I THINK the injectors between the 3.0 and 3.5L are different flow rates. I can't imagine they could be THAT much different between the SOHC 3 vs 3.5, but what do I know.:) Rather than try and replace the ECU, I think it'd be easier - and cheaper - to have Jet reprogram the existing ECU for the 3.5L.
Edward
