Stock Auto Trans Rule Change History ?

[Mark Yacavone]

Originally Posted by oldskool

Just curious, were most PG users quick to change over ?

Or, were there a lot who wanted to stay with their PG ?

Were there some of the heavy hitters that did a lot of testing, before switching over ?

It just seems like this was one of those major Stock rule changes, & since I was not involved, I wonder how big of a deal it really was, for the PG racers, back when it happened.

You can bet your azz the guys with 67-8 327 /275 Camaros were quick to change over.
The three speed 350 LT 1 cars started at 275 also...They are now 340 something...
The 327s are at 270!

[Stan Weiss]

Originally Posted by Mark Yacavone

You can bet your azz the guys with 67-8 327 /275 Camaros were quick to change over.
The three speed 350 LT 1 cars started at 275 also...They are now 340 something...
The 327s are at 270!

Mark,
Who makes these ratios?



Stan

[Mark Yacavone]

Originally Posted by Stan Weiss

Mark,
Who makes these ratios?



Stan

Not sure who makes them but Coan and Pro Trans offer several.
To be fair, McClay 200's have some ratio options but he's at the higher end of that style.
He won't sell parts to the public. You have to have one of his transmissions.
Leo G at Remac will sell you a 2.91 planetary for the 200.

[Stan Weiss]

Mark,
Thanks for that information. I knew that McClay offered a 200 with a 2.91 and Rossler offers a 400 with 2.97 and Coan a 400 with 2.96. I had not heard of anything lower.


Stan

[jmantle]

Originally Posted by Stan Weiss

Mark,
Thanks for that information. I knew that McClay offered a 200 with a 2.91 and Rossler offers a 400 with 2.97 and Coan a 400 with 2.96. I had not heard of anything lower.


Stan

Protrans offers ratios down to 3.20, I assume they are all based on a 904 style gearset
http://www.protransracing.com/images...IO%20CHART.pdf