6.9l engine build up
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Postmaster
Joined: Jan 2010
Posts: 4,319
Likes: 4
From: Elk City, OK
6.9l engine build up
OK, so i just got my hands on a 6.9 and ive got my cavitation block 7.3. heres my plans
arp head studs
ceramic coated pistons
moose pump
moose injectors
factory ford turbo with ats turn down and down pipe.
since i can pull whatever i want off my 7.3l, what should i transfer over? ive heard the 6.9 rockers are junk, but should i just transfer the 7.3l heads over totally?
any info and suggestions would be great. thanks....
arp head studs
ceramic coated pistons
moose pump
moose injectors
factory ford turbo with ats turn down and down pipe.
since i can pull whatever i want off my 7.3l, what should i transfer over? ive heard the 6.9 rockers are junk, but should i just transfer the 7.3l heads over totally?
any info and suggestions would be great. thanks....
Posting Guru
Joined: Dec 2005
Posts: 1,528
Likes: 0
From: Peterborough, Ontario
I know it's been mentioned on here about 6.9 heads needing drilled out to fit 7.3 head bolts, so I would have to assume the 7.3 used a larger thread size for the heads. I wonder if it would be worth redoing the threads in the 6.9 block to go to the bigger stud size? I suspect that Dave can maybe weigh in on this one when he gets a chance.
Lead Driver
Joined: Mar 2006
Posts: 5,098
Likes: 1,504
From: western SD
You can't drill out a 6.9 block to use the 7.3 head bolts because the thread pitch are different. I don't remember what they are, but the 7.3 have something like 12 threads per inch and the 6.9 have something like 14.
Cargo Master
Joined: Feb 2008
Posts: 3,409
Likes: 1
From: back in SE Iowa
some cool .L.E.D. valve stem caps ,deer whistles ,a wing and maybe some bad a$$ tiny wire wheels and dingle *****. just throwing ideas out there for ya bud
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Postmaster
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From: Elk City, OK
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Fleet Owner
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From: Mi'kma'ki
yeah! try that torque cam.
id bore the sucker out to 444ci and keep the power of the 7.3l and just watch your SCA's.(hey,it was good enough for IH to do,and many 7.3l trucks rotted around the engine.)
there's no replacement for displacement.
we know thats a difference of 15 hp and 22 lb ft right there-yeah you can feel that.
id bore the sucker out to 444ci and keep the power of the 7.3l and just watch your SCA's.(hey,it was good enough for IH to do,and many 7.3l trucks rotted around the engine.)
there's no replacement for displacement.
we know thats a difference of 15 hp and 22 lb ft right there-yeah you can feel that.
Fleet Owner
Joined: Jul 2006
Posts: 20,345
Likes: 802
From: Mi'kma'ki
