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Gear ratio

coghill

New member
"Hello, I have twin chevy 350&

"Hello, I have twin chevy 350's with 290 sp outdrives. I need to replace one of the outdrives and need to find out the gear ratio. one of the i.d plates on the drives is missing and one looks like it says 2900470078 or B instead of 8. Anyone?"
 
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