1970 Mustang Mach1 World Registry Forum

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Number of posts : 1
Registration date : 2005-09-06

PostSubject: Gearing   Thu 8 Sep - 2:01

I have 70 Mach1 M code with 351 4V, 4spd and Traction Lok. The project started 12 years ago in Ohio and has been put on hold when our kids arrived. Recently I got the process back on track and it is finally regsitered and insured here is Brisbane, Australia.

Now that I'm driving it, I find the gearing way too low to drive on the freeway. The engine, toploader and 9 inch (should be 3.50:1) were supposedly rebuilt back to factory specs many years ago when I lived in the US. Now I'm trying to work out whether its a final drive issue, transmission issue or a combination of both.

I have a workshop manual, but would grateful if anyone knew some performance figures like,
What mph should it be doing in 2nd at 5000rpm, or...
What revs should it be doing in 4th at 60mph?

Any help would be greatly appreciated.
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