olaosunt
Well-Known Member
Hmmm . I was able to go 10.2 @138 with the whipple tune /3.625 pulley and bone stock exhaust without 7 th gear slipping . It did start to slip when I started logging for my PBD tune but thankful that was due to low transmission fluid (no leaks so must have been underfilled from the factory)Also for cars with 3.55 gears have a problem with 7th gear slipping. Once you get up in horsepower atleast. Seems around 750-800 7th gear cant hold the power. Exedy needs to come up with upgraded clutches
Not slipped since I topped it off even logging the race gas tune which is making 21-22* .E85 is next but I assume the race gas tune must be making close to 800 rwhp (not been on dyno yet ).
Another forum member who has gone 9’s on E85 has been getting slip in 6th (I think He has the 3.15 rear end) and he said the tuner thinks it may be the valve body
I do have a “spare “ iron 3.31 rear end that came out of my KB car with the Magnum Tremec (was a dog till I swapped it for 4.10)
Just wondering if that would be better especially since it’s stronger then the aluminum 3.55.
It did whine like a banshee when it was in the KB car so I think I will leave it as a spare for if /when I have problems with the 3.55’s or start to get 7h gear slip .
Hopefully excedy will come out with a rebuild kit before racing starts next year .
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