Will 3.5 Diameter Driveshaft Fit in B Body Car?

Introduction

The B-body is a General Motors vehicle platform that was used for a variety of full-size cars from 1965 to 1996. The B-body was also used for the Chevrolet Impala, the Buick LeSabre, and the Pontiac Bonneville.

A driveshaft is a component of a vehicle’s drivetrain that transmits power from the transmission to the differential. Driveshafts are typically made of steel or aluminum and are available in a variety of diameters.

The diameter of a driveshaft is an important factor to consider when replacing or upgrading the driveshaft in your vehicle. A driveshaft that is too large in diameter may not fit properly in the vehicle, and a driveshaft that is too small in diameter may not be able to handle the power output of the engine.

Will a 3.5 Diameter Driveshaft Fit in a B Body Car?

The answer to this question depends on the specific B body car model and year. Some B body cars have a larger diameter driveshaft tunnel than others, so a 3.5 diameter driveshaft may not fit in all B body cars.

Here is a list of some B body cars and their driveshaft tunnel diameters:

– 1965-1970 Chevrolet Impala: 3.25 inches
– 1965-1970 Buick LeSabre: 3.25 inches
– 1965-1970 Pontiac Bonneville: 3.25 inches
– 1971-1976 Chevrolet Impala: 3.5 inches
– 1971-1976 Buick LeSabre: 3.5 inches
– 1971-1976 Pontiac Bonneville: 3.5 inches
– 1977-1990 Chevrolet Impala: 3.75 inches
– 1977-1990 Buick LeSabre: 3.75 inches
– 1977-1990 Pontiac Bonneville: 3.75 inches

As you can see, the driveshaft tunnel diameter on B body cars increased from 3.25 inches to 3.75 inches in 1977. This means that a 3.5 diameter driveshaft will fit in all B body cars from 1971 and later.

Conclusion

If you are considering replacing or upgrading the driveshaft in your B body car, it is important to know the diameter of the driveshaft tunnel. A 3.5 diameter driveshaft will fit in all B body cars from 1971 and later.