to make a long story short ive been trying for two years to get a clutch recipe dialed in and have not had good luck on top end. today put a 42 finish on my sled and hola. I should over rev using loaded up 8dn20's www primary and I didn't. so I now know something else is wrong. don't know what made be look at the heads but I notice 8dn-00. remind u this is a 2001. I remembered a post saying 2000 and up heads are 8dn-10. looking alittle further my cylinders say 8dn-00 also. so I at least know I have a 98 top half motor according to part #'s. is there any way to tell if my lower part is 2001. thanks for any help
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