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63corvette · 05-20-2009, 08:48 AM

The weight of the vehicle is the issue and 3000 lbs seems to be the approx break point.
Most of the stock and super stock cars are in excess of that 3000 lbs and can benefit from the 3 speed as long as rotating weight inside the trans is limited.
My 2 Cents

05-20-2009, 08:48 AM	#7
63corvette Senior Member Join Date: Mar 2007 Location: Canyon, Tx Posts: 552 Likes: 128 Liked 357 Times in 103 Posts	Re: Powerglide vs. TH350 The weight of the vehicle is the issue and 3000 lbs seems to be the approx break point. Most of the stock and super stock cars are in excess of that 3000 lbs and can benefit from the 3 speed as long as rotating weight inside the trans is limited. My 2 Cents