3250 southbend dd in 97 12 valve

bp1x71

New member
i have a 97 12 valve and i have had a 3250 sb clutch in it for about a year and half with est 400 hp i also got the upgraded shaft. when i first got it everything seemed perfect. now when i take off from a stop it will about break your neck no idea why this is. it sucks and its supposed to be a street clutch. tough to shift gears also any ideas to why it is so jumpy? its made for 500 hp so i dont think 400hp would damage it?
 
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