Define "beating the crap out of it" please. If you only run street tires, especially with an open rear end, you can easily burn the tires off without putting much of a load on the transmission. It`s power, weight, traction and gearing that punish a transmission. If the tires are freewheeling, no real load, right. As for T5`s, I ran the same stock 5.0 Mustang T5 in my old street strip 302 Fairmont (low 13`s normally, it went high 12`s with higher launch RPM`s) for 5 years and never hurt the trans. This car normally 60 footed in the 1.8`s. When I first built my 85 Mustang 302 Stock eliminator car, I also ran T5`s for the first year. Even though the Mustang was 200 lbs lighter, and only ran 1/2 second quicker, it also left quite a bit harder, and I broke both T5`s within the first year, including badly bending the mainshaft. With street tires it`s likely none of this breakage would have occured. I don`t know how many 10 second Mustangs are running stock T5`s in your area, but around here I`ve seen 1 car do that 1 time only. And it certainly wasn`t a 4 cyl. trans.
428 powered Fairmont drag car, Best ET:10.03@132.11MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed
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