Quote Originally Posted by blowfishRus6 View Post
dont get frustrated. thats good info. so in medifor, to change the relistaic ratio of the trans, you would change out the sprocket??? thats good to know.
If you had a GT, then changing the sprockets will only get you a worse gear ratio. Also, if you had a GT, you had the best gearing you could get shy of doing 3.69 gears. I'm not sure what was involved in making that work.

Also, with a standard 4t65e, you could swap the diff to change the gear ratio. 3400 powered w-body cars got a 2.86 FDR, 3800 Impalas usually came with a 3.05/6 FDR and the GPs and MC SS got the 3.29 FDR.