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904 behind a 3.9 #1709991 12/12/14 10:36 PM 12/12/14 10:36 PM
Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming B BigBird OP pro stock
BigBird OP pro stock B Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming	What would it take to make a 904 work behind a 1992 3.9. It was a 5 speed that has a bearing going out. I have a good 904 that I know will bolt up but what would it require to make it drivable besides the linkage. Would it take a 318 or 360 flex plate, torque converter ect?

Re: 904 behind a 3.9 [Re: BigBird] #1709992 12/13/14 12:12 AM 12/13/14 12:12 AM
Joined: Jan 2005 Posts: 12,419 Kalispell Mt. H HotRodDave I Live Here
HotRodDave I Live Here H Joined: Jan 2005 Posts: 12,419 Kalispell Mt.	V6 flex plate if you are keeping the EFI. Get the kickdown cable and bracket from an a-500 dakota or van, also some vans were still being made with a 904 in that time frame. Is it 2wd or 4wd? I am not causing global warming, I am just trying to hold off a impending Ice Age!

Re: 904 behind a 3.9 [Re: HotRodDave] #1709993 12/13/14 12:32 AM 12/13/14 12:32 AM
Joined: Sep 2011 Posts: 2,042 colorado S savoy64 top fuel
savoy64 top fuel S Joined: Sep 2011 Posts: 2,042 colorado	you will have to make a hole in the bellhousing for the crank sensor---also knock out the steel donut that holds the pilot bearing in place---if you dont the trans wont match up and wont bolt together without breaking something....a 904 is just a 500 without overdrive...

Re: 904 behind a 3.9 [Re: HotRodDave] #1709994 12/13/14 01:06 AM 12/13/14 01:06 AM
Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming B BigBird OP pro stock
BigBird OP pro stock B Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming	Quote: V6 flex plate if you are keeping the EFI. Get the kickdown cable and bracket from an a-500 dakota or van, also some vans were still being made with a 904 in that time frame. Is it 2wd or 4wd? It's a 2 WD So do I use a 360 torque converter or knock the weights off it like a 318? Last edited by BigBird; 12/13/14 01:09 AM.

Re: 904 behind a 3.9 [Re: BigBird] #1709995 12/13/14 06:37 PM 12/13/14 06:37 PM
Joined: Jan 2005 Posts: 12,419 Kalispell Mt. H HotRodDave I Live Here
HotRodDave I Live Here H Joined: Jan 2005 Posts: 12,419 Kalispell Mt.	No external weights. Use the V6 318 or 360 converter with the big weights knocked off. I am not causing global warming, I am just trying to hold off a impending Ice Age!

Re: 904 behind a 3.9 [Re: HotRodDave] #1709996 12/13/14 08:31 PM 12/13/14 08:31 PM
Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming B BigBird OP pro stock
BigBird OP pro stock B Joined: Jan 2003 Posts: 1,279 Buzzardbreath Wyoming	Good info.... thanks

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