Flexplate for AMC 904 trans to 4.0L?

Swaping 258 to 4.0, 4.0 parts to 258 etc!
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PseudoSport
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Stroker Displacement: 4.0L Turbo
Vehicle Year: 1995
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Vehicle Model: Cherokee

Flexplate for AMC 904 trans to 4.0L?

Post by PseudoSport »

I’m going to be swapping a 1997 4.0L into a 1982 AMC spirit which has a 904 transmission. Are there any 4.0L flexplates that will bolt up to the 904 converter? To make it easier I don’t have to worry about the crank trigger wheel pattern since I’m using megasquirt EFI.
GRM Challenge 1995 2WD Cheorkee, 2,780lbs, 240k 4.0L, 50 trim T3/T4 turbo, MS1 EFI, 36lbs injectors, -2.5 degrees camber, Ford 8.8 3.73 w/LSD, 274 whp/322wtq, 12.98@100mph 1/4 mile
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1982 AMC Spirit - Turbo 4.0L, 60 trim T3/T4, MS1 EFI
SIXPAK
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Re: Flexplate for AMC 904 trans to 4.0L?

Post by SIXPAK »

Yes there is a stock flexplate that you can use. There were some 904 transmissions behind 4.0's in a few years. I will try to come up with a number for you if the dealership cant help you. I use one myself right now in the race car.
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PseudoSport
Where's the "any" key?
Where's the "any" key?
Posts: 26
Joined: June 23rd, 2011, 2:55 pm
Stroker Displacement: 4.0L Turbo
Vehicle Year: 1995
Vehicle Make: Jeep
Vehicle Model: Cherokee

Re: Flexplate for AMC 904 trans to 4.0L?

Post by PseudoSport »

I'll have to dig though my stack of flexplates to see if I already have one that might work. What starter are you using with your flexplate? I read the 4.0 one is smaller then the 4.2.
GRM Challenge 1995 2WD Cheorkee, 2,780lbs, 240k 4.0L, 50 trim T3/T4 turbo, MS1 EFI, 36lbs injectors, -2.5 degrees camber, Ford 8.8 3.73 w/LSD, 274 whp/322wtq, 12.98@100mph 1/4 mile
http://www.Facebook.com/JeepXJR

1982 AMC Spirit - Turbo 4.0L, 60 trim T3/T4, MS1 EFI
SIXPAK
Consistent
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Posts: 217
Joined: March 8th, 2008, 5:34 am
Stroker Displacement: 280

Re: Flexplate for AMC 904 trans to 4.0L?

Post by SIXPAK »

I am using a stock 4.0 starter and just fyi comp ratio is over 14 to one
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