OD vs. D -- Line Pressure
Thread Starter
Burning Brakes
Joined: Feb 2001
Posts: 997
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From: Park Ridge/Lincoln Park - Chicago, IL
St. Jude Donor '11
OD vs. D -- Line Pressure
Do you guys get better times in drive rather than overdrive? On my Grand National, I noticed the car was a little quicker 0-60 in drive due to the fact that the tranny got more line pressure. Would the LT1 Vette be the same way?
Jeff
Jeff
Safety Car
Joined: Dec 2000
Posts: 3,767
Likes: 5
From: Jacksonville Fl
Re: OD vs. D -- Line Pressure (Old Sport)
According to the ATSG tech manual for the 700R4/4L60...it says that line pressure for Park,Neatral,OD & manual third are all the same. It is, however, boosted in manual second and low.
BUT: You may notice a better quality when in manual 3 instead of 4 because the over run clutch engages in the lower range selection which helps the forward sprag and forward clutch hold. It does not engage in the OD/4th selection.
If thats your symptom, it means your forward clutch is probably wearing out. How is your trans fluid?
BUT: You may notice a better quality when in manual 3 instead of 4 because the over run clutch engages in the lower range selection which helps the forward sprag and forward clutch hold. It does not engage in the OD/4th selection.
If thats your symptom, it means your forward clutch is probably wearing out. How is your trans fluid?
