Black Adam Posted October 13, 2004 Report Share Posted October 13, 2004 looking to make engine swap and i've ruled out 3800. don't know much about these engines except there are some definately strong opinions about both so i need some direction Quote Link to comment Share on other sites More sharing options...
DaveFromColorado Posted October 13, 2004 Report Share Posted October 13, 2004 3400 is the best way to go, the 3.4 (LQ1) is a HIGH maintenence engine, and doesn't offer much for performance mod's without making them yourself, where as the 3400 has a nice list of aftermarket mods. Not sure of all the donor vehicles, but I know the Montana (minivan) had it, as well the newer Grand Am's had it too - I'm sure other cars got it, but I don't know which ones off the top of my head. --Dave Quote Link to comment Share on other sites More sharing options...
Black Adam Posted October 13, 2004 Author Report Share Posted October 13, 2004 thanks dave you've been a real help to me since i joined Quote Link to comment Share on other sites More sharing options...
DaveFromColorado Posted October 13, 2004 Report Share Posted October 13, 2004 .. I try. --Dave. Quote Link to comment Share on other sites More sharing options...
sl3196 Posted October 13, 2004 Report Share Posted October 13, 2004 Alero's have them too! Quote Link to comment Share on other sites More sharing options...
Canada Posted October 13, 2004 Report Share Posted October 13, 2004 3400s make more low end torque......................3.4L DOHCs make a TON more top end....and do big smokey burnouts teamed to a manual. Quote Link to comment Share on other sites More sharing options...
Stealth Posted October 13, 2004 Report Share Posted October 13, 2004 was there a 3.4 mpfi engine? or only sfi? Quote Link to comment Share on other sites More sharing options...
99RegalGS Posted October 13, 2004 Report Share Posted October 13, 2004 91-93 3.4 DOHC were MPFI. 94+ 3.4 DOHC was SFI. All 3400's are SFI Quote Link to comment Share on other sites More sharing options...
manitcor Posted October 13, 2004 Report Share Posted October 13, 2004 3400s are SFI and MPFI. SFI is a fuel economy mode used when idiling and crusing. The PCM switches to MPFI mode when you go WOT. 3400s can be found in: 97+ GrandAM SE, GT, Olds Alero, Chevy Venture, Pontiac Montana and 00+ Monte Carlo LS (i think there are a couple others just cant think of them now) I reccomend getting an engine from an 00+ car as they tend to be much cheaper than 97-99 engines. To maintain your EGR you will need a plenum from a 97-99 engine though. If your car is a 95 or earlier you will need an adapter plate for the EGR. Quote Link to comment Share on other sites More sharing options...
digitaloutsider Posted October 13, 2004 Report Share Posted October 13, 2004 3400s can be found in: 97+ GrandAM SE, GT, Olds Alero, Chevy Venture, Pontiac Montana and 00+ Monte Carlo LS (i think there are a couple others just cant think of them now) It can also be found in the Oldsmobile Silhuette, Pontiac Aztek, and Buick Rendezvous. Also, it's 99+ Grand Am's. The 96-98's got the 3100. Quote Link to comment Share on other sites More sharing options...
rudefyet Posted October 13, 2004 Report Share Posted October 13, 2004 It's also in the new Chevy Equinox Quote Link to comment Share on other sites More sharing options...
TeeJay3800 Posted October 13, 2004 Report Share Posted October 13, 2004 3400s are SFI and MPFI. SFI is a fuel economy mode used when idiling and crusing. The PCM switches to MPFI mode when you go WOT. I've never heard that before....interesting. Quote Link to comment Share on other sites More sharing options...
Canada Posted October 13, 2004 Report Share Posted October 13, 2004 Actually, if your car is an OBD-II, you can use the 2000+ EGR.....I am. Quote Link to comment Share on other sites More sharing options...
manitcor Posted October 13, 2004 Report Share Posted October 13, 2004 Actually, if your car is an OBD-II, you can use the 2000+ EGR.....I am. true but most times if your 96-99 its cheaper to get the older style plenum to fit your current egr than to get ahold of an 00+ egr. Good deals are alwayds to be had if you search the yards though. http://www.car-part.com Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted October 14, 2004 Report Share Posted October 14, 2004 3.4 DOHC would be a hell of alot easier to swap cause it wa an option for your car. woot woot DOHC pride! Quote Link to comment Share on other sites More sharing options...
manitcor Posted October 14, 2004 Report Share Posted October 14, 2004 actually not, as far as parts go you would need to change out the PCM and a few other items, but then Im not 100% sure as I wouldnt want a DOHC. 3400 is a direct swap, the only real issue is the EGR. 3400 has a better aftermarket too Quote Link to comment Share on other sites More sharing options...
havikx Posted October 14, 2004 Report Share Posted October 14, 2004 if it were a matter soley on engine...3.4lt i would say. i dunno whats easier to find/install/repair but the 3.4lt has more high end power. its fun watchin civics pull of the line and get cocky...then blow by them. sides...i have the 3.4. did you expect me to say something different? Quote Link to comment Share on other sites More sharing options...
havikx Posted October 14, 2004 Report Share Posted October 14, 2004 AHHHH double post. sorry. *gets tomatoes thrown at* its been doing it all night... Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted October 14, 2004 Report Share Posted October 14, 2004 it's great to be backed up by another 3.4 lover! 8) Quote Link to comment Share on other sites More sharing options...
havikx Posted October 14, 2004 Report Share Posted October 14, 2004 DOHC PRIDE BABY! Quote Link to comment Share on other sites More sharing options...
patgizz Posted October 14, 2004 Report Share Posted October 14, 2004 i've done both. i swapped in a 3.4 dohc, then a 3400. i say it depends on your maintenance budget and your skills. the timing belt, infamous 4 hour alternator change are reasons against the dohc. the 3400 is easier to work on. i havent driven the 3400 yet so i cant compare how the two feel. the dohc has excellent feel in the high rpm range but its kinda wasted on a heavy-ass w-body. in a lighter car it would be a dream. they are both pretty much drop in swaps. both can use your existing harness. ideally you would have a custom chip burned for the 3400 to make it run at its potential, which costs money. the 3.4 can run a dohc chip out of a junkyard car because it was available and out there, as opposed to a 3400 mpfi conversion. Quote Link to comment Share on other sites More sharing options...
terryk2003 Posted October 14, 2004 Report Share Posted October 14, 2004 actually not, as far as parts go you would need to change out the PCM and a few other items, but then Im not 100% sure as I wouldnt want a DOHC. 3400 is a direct swap, the only real issue is the EGR. 3400 has a better aftermarket too :withstupid: ...i've been thinkin about the 3400 swap into my cutty...and i've been talkin to manitcor about what's involved and it seems like a pretty nice swap!...i also know from EXPERIENCE that the 3400 will get down the highway!...my mom has one in her '02 alero and it'll rip the tires up..HELL, i smoked a '03 V-6 Mustang!!! ...and besides, i've worked on some of those 3.4's and they're a BITCH to work on!! ...so, HOPEFULLY i'll be swapping my 3100 out for the 3400 sometime!...just my 2 cents... Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted October 14, 2004 Report Share Posted October 14, 2004 who can't beat a V-6 Stang? i think pretty much everyone on this board can give them a run for their money! Quote Link to comment Share on other sites More sharing options...
havikx Posted October 14, 2004 Report Share Posted October 14, 2004 actually not, as far as parts go you would need to change out the PCM and a few other items, but then Im not 100% sure as I wouldnt want a DOHC. 3400 is a direct swap, the only real issue is the EGR. 3400 has a better aftermarket too :withstupid: ...i've been thinkin about the 3400 swap into my cutty...and i've been talkin to manitcor about what's involved and it seems like a pretty nice swap!...i also know from EXPERIENCE that the 3400 will get down the highway!...my mom has one in her '02 alero and it'll rip the tires up..HELL, i smoked a '03 V-6 Mustang!!! ...and besides, i've worked on some of those 3.4's and they're a BITCH to work on!! ...so, HOPEFULLY i'll be swapping my 3100 out for the 3400 sometime!...just my 2 cents... my dohc can take v6 stangs. some kid with a 89 4banger stang wants to race me. he thinks my car is a buick. lmao. 3.4 definatly a bitch to work on and does have a few kinks but its got so much power...i love it. one of my favorite engines...ever. Quote Link to comment Share on other sites More sharing options...
terryk2003 Posted October 14, 2004 Report Share Posted October 14, 2004 well...FINE THEN...i dunno that my 3100 would take a stang though... :? ...anywayz...point WAS...3400 gets my votE!!! Quote Link to comment Share on other sites More sharing options...
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