Quote Originally Posted by dragoncelica View Post
Dude dont do it 4age is crap and not as reliable as a 3tc, also a 3tc will run over a 4age any day when built and i am talking about both engines been built, the 3tc will run over the 4ag also there is a big factor and is money what you need is to turbo efi your 3tc and go for it easylly 350 or 400 whp, with the right parts, and by the way the tranys are the same on both 4age and 3tc the bellhousing is the only diference if you got a 82, the 80-81 uses the same trany but the output shaft is 20 splines instead of 21 and the imput shaft bearing is smaller outside is exactlly the same and it can be used in both aplications!
I've never heard of any real reliability issues with a 4AGE. I will say I've always heard of 3TC's making more but the 4AGE isn't a BAD motor.