Automatic tramsmission power
Thread Starter
Intermediate
Joined: Sep 2003
Posts: 48
Likes: 0
From: Luxembourg europe
Automatic tramsmission power
HI
I am wondering how much power can a late 1979 automatic transmission take? Since I am boosting my engine I don't want to destroy the clutch and transmission. according to the catalog I should be around 300hp and 375 ft/lbs when I have everything installed. Is this ok with stock driveline, clutch and transmission?
I am wondering how much power can a late 1979 automatic transmission take? Since I am boosting my engine I don't want to destroy the clutch and transmission. according to the catalog I should be around 300hp and 375 ft/lbs when I have everything installed. Is this ok with stock driveline, clutch and transmission?
Melting Slicks
Joined: May 2002
Posts: 2,431
Likes: 52
From: Florida
IMO, depending on you're manual downshifting habits, you should be okay at that power level. You've reached the threshhold though I think. Realize it's clutches not clutch...5-6 in each drum, 3 in the front, 5-6 in the rear...one band. I'd have the trans. overhauled and add a shift kit if it's an old transmission. You may want to opt. for a T-400 though if you want to forget about trans. worries. Get more opinions for sure....we're loaded with em' 
Racer
Joined: Feb 2007
Posts: 342
Likes: 0
From: Onley VA
If you aren't real hard on it, it will be OK, but at least put in a quality shift kit, they're cheap and easy. Shift kits actually improve your trans' reliability by increasing fluid pressures and limiting clutch slippage. Just note, they don't increase overall parts stregnth, the various internal parts don't magically become stronger, but the stronger band/clutch engagement improves their life and helps keep temps lower due to less slippage.
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
HI
I am wondering how much power can a late 1979 automatic transmission take? Since I am boosting my engine I don't want to destroy the clutch and transmission. according to the catalog I should be around 300hp and 375 ft/lbs when I have everything installed. Is this ok with stock driveline, clutch and transmission?
I am wondering how much power can a late 1979 automatic transmission take? Since I am boosting my engine I don't want to destroy the clutch and transmission. according to the catalog I should be around 300hp and 375 ft/lbs when I have everything installed. Is this ok with stock driveline, clutch and transmission?
