I have 92 f250 i'm installing 7.3 with ats turbo in it. It has 5 speed with dual mass flywheel.
so my question is will flywheel from my 87 6.9 work?
It has 11 inch clutch but would drill mounting holes for 13 inch pressure plate and use it. as the 11inch will never take the extra tq and horse power.

 

no it won't work

 

what wonn't work the flywheel from 6.9 or the 13 inch clutch?
the 13 inch clutch is used on 1983 s1600 hi truck with the 6.9 in it.

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i mean s1600 international truck that has 6.9 in it

 

it will hold it. i am running the stock 11 inch clutch in mine and never had slippage. there is a 12 inch upgrade that will fit also.

 

Well I do have a brand new 11inch clutch and pressure plate sitting here which bolts on to the 6.9 flywheel so I could go ahead and use it. Maybe upgrade at later date. I do hate pulling tranny to change clutch, but then I'm lazy buy nature anyhow.

 

what i meant to say is that you would be putting alot of added strain to your flywheel because of the extra holes you would have in it.

 

I would have to change to different clutch disc that has the larger spline for the 5 speed. Does anyone have a part# say from napa for the 11 inch? or can I use the 11inch clutch disc from the dual mass setup?
Or I could go ahead and do the 13 inch which has the right spline in clutch disc

 

we just put a 13" in my buddys idi. he bought a new solid flywheel and drilled it to work. but i kept tellin him to call valair or sb to see if they would take a powerstroke flywheel and just drill idi crank circle instead. but anyway it works fine. its a sb, the one rated for 450 or whatever.

 

im running the napa 12" wworks good

 

Great sounds like all will work my only problemb is to get the right spline which is 1 1/4 inch shaft

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powerstrokinstang i'm in canada what is sb not sure if we have them up here