Normally I am a very methodical person who keeps written notes and tags parts. Katrina is responsible for my doubts in this case. The 250 CID pre 75 distributor has a longer shaft and a different drive gear than does the 75 and the post 75. The gears are in a different location on the shafts as well. Am I correct? I am not sure where or when I obtained the pre 75 but am 99% sure that the post 75 is off the block I just rebuilt. Are there any other differences of which I should be aware? On the same subject but a different incident; I remember in the distant past replacing a points distributor with a HEI and having trouble with the cap jamming against the block/head. My notes indicate I filed the cap slightly to gain the needed clearance. If I am correct this info may be of use to others who read this post as well as to me. Thank you in advance for your help. Ray 3450
