my experiance with this is i was at the crank dyno 648 hp/595 torque with 300 shot nos in a 3400 lbs 69 tubbed cuda with a stock crank and caps. it ran great and held together for about 200 runs but it finally gave last summer. and no im had no idea about cap walk or anything like that i was told i was on the edge everytime i hit the nos but go or blow is my moto. this time im getting alluminum caps and i have the cre stud girdle. so this summer i will make more hp and tell your what i find out. if it works great if it didnt i will let you know.