This is a custom grind i got from Nelson performance earlier this year. Going with another custom grind for my 370/L92 build. This cam was specd for my 5.3. Had great low end and pulled good to about 6500. Had a decent little lope at idle. Nothing extreme tho. specs are 218/226 .595/.605 113. Has around 8,000 miles on it. It is a 3 bolt core. Asking $325 shipped. you can call or text me for a faster response at 864-542-655eight