Hap Posted May 30, 2005 Report Share Posted May 30, 2005 My 94 cutlass contvertible with the 3.4 DOHC is knockin bad to say the least . Knowing the history of these motors and how big a pain in the ass they are to work on has got me lookin into swappin it with something else. 3.1 T 3.1 V or any of the 3.8s . Ive got all of them but the 3.1V and i got access to it at a local juck yard.(Poor junkman doesnt know what he has).Im partial to the 3800s ,ive seen them in the regals.I havent done any fwd swaps so i dont know what interchanges with what .Lookin to you guys to give me some insite. Hap Quote Link to comment Share on other sites More sharing options...
sonyman87 Posted May 30, 2005 Report Share Posted May 30, 2005 go with the 3800 and you wont be sorry Quote Link to comment Share on other sites More sharing options...
EurosportZ34 Posted May 31, 2005 Report Share Posted May 31, 2005 go with the 3800 and you wont be sorry yeah, 3800s are pretty trusty or you could always swap in another DOHC Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted May 31, 2005 Report Share Posted May 31, 2005 I would seriously consider the 3500 and run it off the original 3.4 electronics. According to car-part.com, looks like you can get one ~$600. The 3500 is 200HP like a 3800 Series III, but is also 60-degrees like a V6 should be and should weigh less thanks to the aluminum heads. It'll also have more power in the higher RPMs so it won't feel terribly different than the 3.4. Quote Link to comment Share on other sites More sharing options...
5speedz34 Posted May 31, 2005 Report Share Posted May 31, 2005 That would be a cool swap, but I thought the 3500 are 90* because they are based off the Northstar line? IIRC: Didn't we decide it wouldn't clear either because of the heads? Quote Link to comment Share on other sites More sharing options...
jeremy Posted May 31, 2005 Report Share Posted May 31, 2005 the 3500 would be a nice swap if possible... Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted May 31, 2005 Report Share Posted May 31, 2005 That would be a cool swap, but I thought the 3500 are 90* because they are based off the Northstar line? IIRC: Didn't we decide it wouldn't clear either because of the heads? No, not that 3500, the 60-degree pushrod 3500 from the Malibu Maxx and G6. I like the 3500. It has almost as much HP & torque as the 3.4 DOHC, gets better fuel economy, is much smaller, lighter, 60-degrees naturally balanced (no balance shaft), aluminum heads, and being a gen 3 V6, has a pretty nice powerband. I think it's a very nice alternative to the 3800 non-S/C. Quote Link to comment Share on other sites More sharing options...
Hap Posted May 31, 2005 Author Report Share Posted May 31, 2005 Sorry guys the 3500 isnt a option for me due to the fact i have 2 good 92,3800s 1 good sc 3800 (witch is going in my SSE ) 1 99 ,3100. My issue is wiring and ecm .I want to stay away from OBD2 cause my scanner isnt updated that far .I got access to a 92 regal with the 3800 harness ecm and all .Didnt know if i would be running into any snags there our should i just find me a old 3.1 t motor witch looks to have the same wiring harness .So what do ya think guys . Quote Link to comment Share on other sites More sharing options...
cutlassdude96 Posted June 1, 2005 Report Share Posted June 1, 2005 That would be a cool swap, but I thought the 3500 are 90* because they are based off the Northstar line? IIRC: Didn't we decide it wouldn't clear either because of the heads? your thinking of the 3.5 DOHC from the Intrigue thats based off the N* Quote Link to comment Share on other sites More sharing options...
JoroCorona Posted June 1, 2005 Report Share Posted June 1, 2005 3500 + Fiero + Turbo = WHOA NELLY! Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted June 1, 2005 Report Share Posted June 1, 2005 Sorry guys the 3500 isnt a option for me due to the fact i have 2 good 92,3800s 1 good sc 3800 (witch is going in my SSE ) 1 99 ,3100. My issue is wiring and ecm .I want to stay away from OBD2 cause my scanner isnt updated that far .I got access to a 92 regal with the 3800 harness ecm and all .Didnt know if i would be running into any snags there our should i just find me a old 3.1 t motor witch looks to have the same wiring harness .So what do ya think guys . out of those engines i would pick the '99 3100 and run it off of your existing 3.4 DOHC wiring harness & ECM...just use a 3.1 VIN T memcal. Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted June 1, 2005 Report Share Posted June 1, 2005 Not possible to do because a 94 3.4 DOHC uses an SFI ECM for which there was no VIN T MEMCAL available. A 3100 might run off a 3.4 DOHC PCM and chip though. For that matter, a 3800 might as well. Quote Link to comment Share on other sites More sharing options...
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