70 Ralley HELP!!

[winterborn]

I need information on driveshaft length for this car. It's a 4 speed car but is lacking a driveshaft. Information on either getting one built or finding a replacement would be handy.

[Oldsmaniac]

I believe a driveshaft from a standard cutlass with smallblock and turbo 350 is a direct swap....prob from years 68 to 72....Someone correct me if Im wrong.

[winterborn]

Thanks, Now to find one down here in New Mexico.

[joe_padavano]

Originally Posted by Oldsmaniac

I believe a driveshaft from a standard cutlass with smallblock and turbo 350 is a direct swap....prob from years 68 to 72....Someone correct me if Im wrong.

Two things to be aware of. First, while all 68-72 A-body cars can be potential sources, the problem is that different rear axles can use driveshafts that vary by up to an inch in length. This may not sound like much, but if everything comes out on the short side the yolk can fall out of the trans, or at least leak.

Second, the automatic driveshafts use two concentric tubes with rubber in between. The manual trans driveshafts are solid.

[winterborn]

My car is a Four speed so I would need the solid driveshaft. Is the measurment from transmission yoke to rear end yoke. By yoke I mean the saddle that holds the universal joint. I think OPG had the transmission output yoke.

Frank T Kaluza

[Oldsguy]

Originally Posted by joe_padavano

...the automatic driveshafts use two concentric tubes with rubber in between.

I didn't know that one. Great info. Now I are smarter!

[Oldsmaniac]

Even though your car is a stick the rubber connected driveshaft will work just fine for a street car and will be much easier to find. Also note that the yoke from a turbo 400 car is too large to fit the turbo 350, Jetaway, or Muncie.

[winterborn]

Thanks now I have a better idea what to check theyards for.

Frank T Kaluza

[texasred]

PM 70W30cars. He knows 70s and 4 speeds! Also knows a lot of Texas/New Mexico parts guys.

C.J.