V6 Discussion and questions about the base carbureted or MPFI V6's and the rare SFI Turbo V6.

2.8 to 3.4FWD

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Old Aug 17, 2006 | 05:13 PM
  #1  
jak2908's Avatar
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Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD
2.8 to 3.4FWD

what kind of modifications will it take??? from the FWD to RWD???...couldnt think it would be that bad.. HELP PLEASE...because i can easily get this 3.4DOHC for $100
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Old Aug 18, 2006 | 12:05 AM
  #2  
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From: Michigan
Car: 1990 Firebird
Engine: 3.1L
Transmission: 700R4
Axle/Gears: 3.23's
i wouldn't even consider that if i were you it would be a pain is the *** and too much work. You can get a 350 out of a silverado at a junkyard for around that price. And plus parts for the 3.4 are expensive.
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Old Aug 18, 2006 | 12:08 AM
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Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD
from what ive read...i assume putting a v8 in v6 body is a bitch...so there for is why i had the idea
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Old Aug 18, 2006 | 12:12 AM
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
3400 is doable still a lot of work, but the DOHC would be far more trouble than it's worth.
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Old Aug 18, 2006 | 12:23 AM
  #5  
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Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD
geeze guys....thats a downer....i thought i had somethin cool goin for me...and then i wanted to add boost..but i dont wanna add boost to a 2.8....that lost a rod already...anyother ideas??
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Old Aug 18, 2006 | 12:23 AM
  #6  
Project: 85 2.8 bird's Avatar
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
Originally Posted by jak2908
from what ive read...i assume putting a v8 in v6 body is a bitch...
not realy, having just completed it myself. teh 3.4 dohc has no aftermarket, and I've yet to hear someone NOT complain about working on one. rwd 3800 II or [gasp] vee-ate [/gasp] are viable options, along w/the ever popular rwd 3.4 swap boogie, or even the 3X00 top end swap.
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Old Aug 18, 2006 | 12:29 AM
  #7  
jak2908's Avatar
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Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD
you wanna pm me and tell me what you all did and had to buy???....ive read the v6 to v8 sticky and its overwhelming to me..thanks
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Old Aug 18, 2006 | 08:26 AM
  #8  
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Originally Posted by jak2908
you wanna pm me and tell me what you all did and had to buy???....ive read the v6 to v8 sticky and its overwhelming to me..thanks

It would be easier to swap a V8 into the car than a DOHC. The V-H8 swap has been documented and all parts available at the wreckers, and parts stores.

The DOHC swap has only been attempted to my knwledge by one person and AFIK, has yet to be completed, this was a few years I saw the beginings of it.
The fabrication involved is overwhelming, custom mounts, custom exhaust manifolds/headers, custom belt set-up/accesory brackets, possible custom intake, tranny bell housing modificatio, or block drilling and tapping to move the starter, among countless other changes and custome parts needed.
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Old Aug 18, 2006 | 10:17 AM
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Car: 89 RS,89 iroc
Engine: 5.0,5.0tpi
Transmission: 700R4,700R4
Axle/Gears: LSD,LSD
o...good to know now!
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Old Aug 18, 2006 | 11:40 AM
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From: Michigan
Car: 1990 Firebird
Engine: 3.1L
Transmission: 700R4
Axle/Gears: 3.23's
ha i thought you meant converting your f-body to front wheel drive thats why i pretty much said forget it. Really if you can get a complete car with a v8, a third gen would be the best to get, you could have everything you need to drop your v8 in there. In my case, theres a knocking rod and the trans needs work, but for 500 bucks whos complaining. You'll get everything but some things you'll want to upgrade like fuel pump, driveshaft (why not go aluminum?) torque converter, just simple things like that.
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Old Aug 18, 2006 | 01:51 PM
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Project: 85 2.8 bird's Avatar
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From: BFE, MD
Car: 13 Ram 1500/ 78 Formy
Engine: 5.7 / 7.4
Transmission: 6sp / TH350
Axle/Gears: 3.55 posi / 3.23
The v6-8 swap sticky is pretty much cut & dry. I took off my dash again & ran the 84 harness (dash & engine) and didn't really need to touch the firewall harness at all (previously touched during the 3800 swap, iirc). mounts confused me at first, until I realized I was holding them reversed. I jsut moved/bent the k-mbr brakeline back a little to clear. If going slush box, make sure you cain score teh factory tranny lines. I reused the 3800 ones, and had to coerse them a little to clear the starter, which is now on the wrong side, and the y-pipe. I do recommend getting front vee8 springs, as I'm scraping a little, and my springs were down 1/2 coil already durring the plethera of v6 swaps.

after all these yrs, I still wish I had taken the time to find another 2.8 engien harness & swapped that & have driven the bird trouble free than go through all the other crap .
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