Taller Tires Needed

33IMP said

My runner with a factory 4.10 Dana and 28"tires is 3700 at 70 mph.
With no speedo, you might have been going faster than you think..... or, it doesn't have 3.73.... or, the converter has a bunch of slip in it.

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Possible I was going faster than I think. However I was being passed by EVERYBODY (including tractor trailers) and I was in the slow lane. I'd like to be able to keep up and right now that looks like about 4000 RPM for me. (I need to fix the speedo cable)

As far as the converter goes the seller said it was a Hughes transmission and a Hughes 2500 RPM converter. With the 505" motor it foot brakes easily to 2800 and might even do 3000 if I tried. I think this is about right for this car, don't you?

I think a taller tire would help. But I'd like to find a tire that looks like a muscle car and not like a drag race car if you know what I mean. :lol: