Lou Posted March 13, 2022 Share Posted March 13, 2022 I was just under the 70 and cleaned of the axle tube. The code reads FK 0415 B. This codes out to a 10-bolt 308:1 positraction out of a 69 Chevelle? Any ideas what is going on? And how high can of a gear ratio can I go to? Quote Link to comment Share on other sites More sharing options...
Dtret Posted March 13, 2022 Share Posted March 13, 2022 As I’m sure you are aware the chevelle and Monte use a ton of the same parts. Don’t let this shock you. Yet. What’s the production date of your car? A lot of the books don’t list both the chevelle and Monte in in the parts description you kinda have to read between the lines. A 70 with a small block, th350 transmission and 10 is probably not uncommon. Not sure on the gear ratio though. Someone with more technical smarts can answer that. Lol. And also the rearend could have been replaced at some point. 52 year old car. But at least you have the right “ bones”. 1 Quote Link to comment Share on other sites More sharing options...
Lou Posted March 13, 2022 Author Share Posted March 13, 2022 Car has an April of 70 build date. Could possibly have something to do with the strike and lack of parts. I'll have to talk to the guy I got it from. His grandparents bought it new in 70. Quote Link to comment Share on other sites More sharing options...
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