wyk Posted February 17, 2010 Share Posted February 17, 2010 Hey guys, first time caller, long time listener here. I now have in my possession a 2004 Colorado with a 3.5L I5 that runs fine(and has always used synthetic motor oil) and a recently rebuilt 4l60E transmission. The body is gonna be donated out, so I get all the running gear and chassis, including the interior. Is there a way to wedge this thing into a 1986 Comanche so I can finally be rid of this 2.8, or will it be far more pain than it is worth? Can I put these seats in my Comanche as well ;) WYK Link to comment Share on other sites More sharing options...
ComancheKid45 Posted February 17, 2010 Share Posted February 17, 2010 If you have all the wiring and sensors ect. I think itd be worth a shot......i mean what else would ya do with it, lol Link to comment Share on other sites More sharing options...
Geonovast Posted February 17, 2010 Share Posted February 17, 2010 The concept of the I5 has always somewhat irked me. If you're going to go through the trouble of that... why not keep it Jeep and go for a 4.0... which, you know, has an even number of cylinders. Nothing I would do, but certainly be a one of a kind. Link to comment Share on other sites More sharing options...
kro10000 Posted February 17, 2010 Share Posted February 17, 2010 Dunno, but I thought its big brother the 4200 I6 would be a cool swap, they make some crazy power with them, IMHO, GM should use them as the V6 replacement instead of the phase out Link to comment Share on other sites More sharing options...
Oizarod115 Posted February 17, 2010 Share Posted February 17, 2010 that motor seems like a GREAT swap candidate... the thing is powerful as stink, and a fairly solid design from what ive experienced at the shop. i say go for it. The concept of the I5 has always somewhat irked me. If you're going to go through the trouble of that... why not keep it Jeep and go for a 4.0... which, you know, has an even number of cylinders. Nothing I would do, but certainly be a one of a kind. i work at a volvo specialty shop and 70% of our customer base is made up of 850s, s/v70s, s60s, s80s, or xc90s all of which either have to have or are available with an I5 and its a GREAT engine. no problems, smooth as glass, revvs beautifully and does very well for itself especially in turbo application. i see no reason why the chevy i5 would be irksome Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 17, 2010 Share Posted February 17, 2010 the gm 5 cylinder sucks. no power, not great gas mileage. I speak from experience...road tripped in a little gmc 2wd pickup and it was GARBAGE. Link to comment Share on other sites More sharing options...
Oizarod115 Posted February 17, 2010 Share Posted February 17, 2010 i also agree with if there is enough room the 4200 out of a like a trail blazer is a good one too, same stuff. Link to comment Share on other sites More sharing options...
kro10000 Posted February 17, 2010 Share Posted February 17, 2010 The 4200 would be a tight fit, its a tall engine, IIRC the axle runs through the oil pan like in exploders, probably have to BFH the firewall like in a 4.0 swap too Link to comment Share on other sites More sharing options...
kro10000 Posted February 17, 2010 Share Posted February 17, 2010 Plus youd get to confuse people saying you had a 4.2L I6 in your jeep, I foresee countless arguments from non-believers Link to comment Share on other sites More sharing options...
Geonovast Posted February 17, 2010 Share Posted February 17, 2010 Plus youd get to confuse people saying you had a 4.2L I6 in your jeep, I foresee countless arguments from non-believers There are a lot of Jeeps that have a 4.2L I-6. in them. Link to comment Share on other sites More sharing options...
kro10000 Posted February 17, 2010 Share Posted February 17, 2010 Yes but not MJs, anyway youll probably have height issues with the 3.5, possibly making a custom oil pan, or big front lift Link to comment Share on other sites More sharing options...
wyk Posted February 17, 2010 Author Share Posted February 17, 2010 Wow, this thread got hijacked fast. ;) OK, guys. Thanks for the suggestions, but I have in my possession a 3.5L and not a 4.2 I do not intend to purchase an engine. The problem I see already is I have a 4X4, so the 4L60E is out unless I retrofit chevy running gear. So unless I can find a way to mate up this engine, this project is stillborn. Well, I prolly can find a way to make use of the seats... Link to comment Share on other sites More sharing options...
JeepcoMJ Posted February 17, 2010 Share Posted February 17, 2010 this will not end well. way I see it, you have a craigslistable item...not an installable one. Link to comment Share on other sites More sharing options...
kro10000 Posted February 17, 2010 Share Posted February 17, 2010 :agree: six is better than five, and the 3.5 isnt really worth the effort, id just buy a 3.4 or 4.0 with the $$$ from selling the 3.5 and don't look back Link to comment Share on other sites More sharing options...
ComancheKid45 Posted February 17, 2010 Share Posted February 17, 2010 you have a craigslistable item...not an installable one. Sig worthy??? Ha Ha :clapping: Link to comment Share on other sites More sharing options...
wyk Posted February 17, 2010 Author Share Posted February 17, 2010 From what I have seen so far on line, it seems a better swap for the Toyotas since they use a similar transmission set up. So maybe it does have resale value. Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 17, 2010 Share Posted February 17, 2010 :agree: Sell the I5 stuff, buy a used 3.4 and a 4bbl manifold and a 390cfm holley and have fun! Link to comment Share on other sites More sharing options...
comanche09 Posted February 17, 2010 Share Posted February 17, 2010 I had a 2007 Crew Cab 2wd Colorado for a rental once, but it was equipped with the 2.8 or 9L? 4 CYL version. I was totally expecting it to be a DOG. I was shocked at how well it scooted around. If felt like a strong V6. Must have had very steep gearing, but it didn't turn hi rpms on the highway. I even popped the hood to check that it really was a 4-banger. :eek: Link to comment Share on other sites More sharing options...
wyk Posted February 18, 2010 Author Share Posted February 18, 2010 :agree: Sell the I5 stuff, buy a used 3.4 and a 4bbl manifold and a 390cfm holley and have fun! I think I may go and sell it. Is it worth a damn to put the intake and carb on the 2.8 until I can find the 3.4L, or is it too much carbeuretion for the 2.8? Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 18, 2010 Share Posted February 18, 2010 :agree: Sell the I5 stuff, buy a used 3.4 and a 4bbl manifold and a 390cfm holley and have fun! I think I may go and sell it. Is it worth a damn to put the intake and carb on the 2.8 until I can find the 3.4L, or is it too much carbeuretion for the 2.8? I think that manifold and carb would put the 2.8 to a spectacular death! If youre planning on doing this swap, just start gathering parts and do it when youre ready! Link to comment Share on other sites More sharing options...
wyk Posted February 18, 2010 Author Share Posted February 18, 2010 I think I may go and sell it. Is it worth a damn to put the intake and carb on the 2.8 until I can find the 3.4L, or is it too much carbeuretion for the 2.8? I think that manifold and carb would put the 2.8 to a spectacular death! If youre planning on doing this swap, just start gathering parts and do it when youre ready! I am pretty easy on my rides. Even so, killing the 2.8 isn't necessarily a bad thing. I am more concerned of whether the mileage will be worse, and not better. I am much more concerned with mileage and reliability than speed. The carb is the original carb on this thing, afterall. So it's days are numbered. Nice bike, btw. Always wanted an S1. Mebbe someone will trade me one for my driveline and chassis parts ;). BTW, can ya put a 3.4L that was tied to an auto in to a Comanche with a stick, or is the boss too difficult to machine? Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 18, 2010 Share Posted February 18, 2010 I think I may go and sell it. Is it worth a damn to put the intake and carb on the 2.8 until I can find the 3.4L, or is it too much carbeuretion for the 2.8? I think that manifold and carb would put the 2.8 to a spectacular death! If youre planning on doing this swap, just start gathering parts and do it when youre ready! I am pretty easy on my rides. Even so, killing the 2.8 isn't necessarily a bad thing. I am more concerned of whether the mileage will be worse, and not better. I am much more concerned with mileage and reliability than speed. The carb is the original carb on this thing, afterall. So it's days are numbered. Nice bike, btw. Always wanted an S1. Mebbe someone will trade me one for my driveline and chassis parts ;). BTW, can ya put a 3.4L that was tied to an auto in to a Comanche with a stick, or is the boss too difficult to machine? From what Ive read, You use your original 2.8 flywheel, but take it and have it nuetrally balanced.... it should bolt right up! Thanks for the compliment on the bike! It is fun! But Id really love to have a softail or a roadking at this point, as I'm not as young as I used to be, but I won't get rid of the bike till I have another lined up. And that doesnt appear to be happening anytime soon. Link to comment Share on other sites More sharing options...
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