Custom Pilot Bushing Needed?
I am in the process of swapping my auto for a 4 speed. The engine is a 1970 440 with a forged crank. The crank had a bushing in it already and the trans bolted right up. I went to replace the bushing with a new one, but the new one doesn't fit. The new bushing is correct at a 0.940 outer diameter, however the hole in my crank appears to be 0.901 ID. The old bushing's wall thickness was quite a bit thinner than the new one, but I can't find a replacement in the 0.901 range.
The crank hole is machined, and steps down to a slightly smaller diameter about an inch in. I would think this was machined correctly, but apparently not. Is there a bushing from another application that is meant to be used, or am I stuck using a pilot bearing, which does appear to fit in the converter register.
I am in the process of swapping my auto for a 4 speed. The engine is a 1970 440 with a forged crank. The crank had a bushing in it already and the trans bolted right up. I went to replace the bushing with a new one, but the new one doesn't fit. The new bushing is correct at a 0.940 outer diameter, however the hole in my crank appears to be 0.901 ID. The old bushing's wall thickness was quite a bit thinner than the new one, but I can't find a replacement in the 0.901 range.
The crank hole is machined, and steps down to a slightly smaller diameter about an inch in. I would think this was machined correctly, but apparently not. Is there a bushing from another application that is meant to be used, or am I stuck using a pilot bearing, which does appear to fit in the converter register.
