Hey Phantom!
Hey Phantom,
I am looking into getting a drivetrain from an 81 ZX and putting it in my 77. Is the rearend from the 81 a 3.9? I forgot.
Joe
> Mike,
> I have a '77 and have done exactly what you
> are contemplating. If you opt for a ZX 5-spd
> then you need to be sure of two things:
> 1) Get the transmission from the 81-83ZX
> only. It has a .745:1 5th gear. The '80
> model has a .777:1 and the 77-79 have a
> .864:1.
> 2) Install the 3.90:1 differential at the
> same time. The ZX transmissions have lower,
> numerically, 1st & 2nd gears so you'll
> come off the line at slug speed if you keep
> your stock 3.545:1 differential.
> They bolt right up, no modifications needed.
> I love my set-up. Gives the car a whole new
> personality.
> Phantom
Hey Phantom,
I am looking into getting a drivetrain from an 81 ZX and putting it in my 77. Is the rearend from the 81 a 3.9? I forgot.
Joe
> Mike,
> I have a '77 and have done exactly what you
> are contemplating. If you opt for a ZX 5-spd
> then you need to be sure of two things:
> 1) Get the transmission from the 81-83ZX
> only. It has a .745:1 5th gear. The '80
> model has a .777:1 and the 77-79 have a
> .864:1.
> 2) Install the 3.90:1 differential at the
> same time. The ZX transmissions have lower,
> numerically, 1st & 2nd gears so you'll
> come off the line at slug speed if you keep
> your stock 3.545:1 differential.
> They bolt right up, no modifications needed.
> I love my set-up. Gives the car a whole new
> personality.
> Phantom
