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Eaton Posi vs. Detroit Tru Trac

  • Thread starter Thread starter Slatco
  • Start date Start date Feb 3, 2010

Slatco

New Member
Jan 9, 2010
29
1
3
Feb 3, 2010
#1
  • Feb 3, 2010
  • #1
Alright fellas, rebuilding my 8.8 with new 3.73 gears, Moser 31 spline axles and a Trick Flow Diff Cover. Except I don't know which to go with for a diff, the Eaton Posi or the Detroit True Trac (and yes I know that Eaton owns both) The car will be 60% drag 40% street and I plan on running a NOS big shot with an Edlebrock performer intake in the future. Which diff is best suited for what I plan on doing? Also are these two diffs superior to the ford racing diff that was found on the 03 Cobra?

Any insight will be greatly appreciated.
 

SpartaPerformance

10 Year Member
Nov 5, 2006
2,517
61
89
Long Island NY
Feb 3, 2010
#2
  • Feb 3, 2010
  • #2
Eaton if you're really 60/40 drag/street because they can whine very loudly which can get annoying as a DD car.
 

88blowngt

New Member
Jun 29, 2009
68
0
0
Dover, Delaware
Feb 4, 2010
#3
  • Feb 4, 2010
  • #3
Anything wrong with just a OEM traction lok as a replacement?
 

SpartaPerformance

10 Year Member
Nov 5, 2006
2,517
61
89
Long Island NY
Feb 4, 2010
#4
  • Feb 4, 2010
  • #4
For a street car OEM is just fine, if you're going to rebuild the unit Cobra clutch pack would be recommended
 
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