King of the Muscle Cars

[Survivor 69/Z28]

I think its fair to say that the gear rations are really irrelevant to the topic considering all of the gear options for all of the models. Let's take car for car in general terms.

[Lee Stewart]

Originally Posted by Survivor 69/Z28

I think its fair to say that the gear rations are really irrelevant to the topic considering all of the gear options for all of the models. Let's take car for car in general terms.

I disagree.

I am sure you have seen this list before:

http://www.streetmusclemag.com/news/...t-muscle-cars/

Look at all the cars with 3.23 - 3.55 gears

We are talking about 1969 - 1970, the zenith of muscle cars. How many people actually ordered a 4.10 posi rear for their 1970 LS6 Chevelle SS? The one Chevrolet provided to Car Craft had a 3.55 rear in it.

Now keep in mind that by 1970 insurance rates were sky high on super hi performance cars. So the factories didn't set their cars up for optimum performance when they lent one out to a magazine for testing and a write up. They didn't want to see an LS6 Chevelle SS do 12.90 in the quarter mile right off the showroom floor for fear insurance companies wouldn't insure them.

In 1969 Chevrolet had 6400 dealerships in the USA. How many of them were Hi Performance Dealerships?

That's what made some cars special. Like the 1968 RAII GTO with it's standard 4.33 posi rear or the 1969/1970 RAIV GTO with a standard 3.90 rear.

If you ordered a 1970 Hemi 'Cuda with an auto trans the standard rear axle ratio was 3.23. If you wanted 4.10 gears it's cost you $221.00 which is $1,425.40 in 2017 dollars! They only came with the super performance axle package which included PFDB.