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jmlay

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Posts posted by jmlay


  1. Speed being inaccurate is doubt is a result of the cable or the speedometer. The driven gear on the cable needs to have have the appropriate number of teeth for the rear axle ration & tire diameter. If you want to do the math go for it but there are online calculators that will do the math for you. Here is a great example. Note: It asks C6 if 4 speed to provide the correct correct left or right helix gear. If using another trans one will need to know if the trans uses left or right gear.:

    https://www.428cobrajet.org/speedo-calc


  2. @TexasEd,

    While my measurements are accurate to this housing it appears my housing is NOT for a 67-70 Mustang/Cougar. I never intended to mislead anyone and apologize for any problems this may have caused!

     

    Good news is now i get to spend some more money.

     

    54 1/4” is what I have read elsewhere for flange to flange. This falls inline with @det0326 measurements. Add 5” to that and you 59 1/4” for axle flange to flange. This is also what I have read elsewhere.
     

    Mike


  3. I was inferring you were just replacing the rails forward. Guess I should work on my reading comprehension as I get older.... I see now! 

    My car is currently with my body guy or I would happily take some measurements for you. As I recall the inner rocker & outer rocker should lineup & the bottom 90 deg bend should be even with the inner & outer rockers. I think I would start with getting the frame rails lined up per the drawings above & then line up the floor with the bottom of the rockers then clamp tograther. Next I would start clamping in the frame rails, core support per the drawings above. If all of that looks good put on your doors, fenders & hood to see how things line up. If you can adjust everything to get the lines correct start welding it all together. DO NOT weld anything until you have trial fit everything.

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