How does cid make power?

Rat Bastid said

I’d have to know car weight and tire diameter but I doubt you’d need a 5.38 gear.

Then my answer is you have to build what YOU want to drive. Just don’t presuppose that everyone can’t handle a gear lower than 3.91 on the street.

4.56 is my go to strip/street gear. If you are a street guy then build according. But that doesn’t mean you won’t get outrun by a smaller CID engine.

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I have had 4.56s and 4.11s in my 62, along with the 3.91s in it now. It runs (essentially) the same times, no matter what gear.
I had 5.43s in my Tina for a while, but it is faster (and quicker) with the 4.57s. Both cars are cylinder head limited, probably why gearing doesn't matter.
I'm gonna try the 3.50s in my Opel first, then we'll see if it needs more.... or if 600 lb ft can pull it.