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So the 904 in the '73 Valiant was toast, or so I thought. I was missing Reverse and Third gear, the most important two. I knew the 904 in my '72 Valiant was good (both are 225 SL6ers) and the '73 was my daily driver, so a quick swap fix, right? :angryfir: Wrong. :banghead: The swap was more of...

I know nothing on this topic. How would I go about finding my Valiants gear ratios? Ive got a 70 with a 318 and a 72 with a 225. As far as I know both drive trains are stock. Are there casting numbers or is it a take-it-apart-and-look kinda deal?