* Different Input Shaft Diameter: The 700R4 uses a larger input shaft diameter than the Turbo 350. This difference prevents the 700R4 tail shaft from properly fitting into the Turbo 350's output shaft.
* Length Differences: The 700R4 tail shaft and housing are longer than the Turbo 350's, making them incompatible with the mounting points on the Turbo 350 case.
* Different Output Shaft Spline Count: The output shafts on these transmissions have a different number of splines, making the tail shafts and housings incompatible.
Possible Solutions:
1. Use a Turbo 350 Tail Shaft and Housing: The most practical solution is to use a compatible tail shaft and housing specifically designed for the Turbo 350 transmission. These parts are readily available from aftermarket suppliers.
2. Adapt the Tail Shaft: It is possible to adapt a 700R4 tail shaft to fit a Turbo 350, but this is a more complex process and requires modification of both the tail shaft and the Turbo 350 case. This is generally not recommended for the average DIY mechanic.
Important Note: Before making any modifications to your transmission, it's highly recommended to consult with a reputable transmission specialist. They can assess your specific needs and recommend the most appropriate solution.