Ok thanks for the info, but will the 261 cam listed for 56 to 62 fit in a 55 1st or 2nd series block?? Is it because the lifters and push rods changed?? The cs293 is listed as a mechanical cam, this means it is a solid lift cam right? If the difference is lifters and pushrods, will 56 parts fit the 55 blocks?? THANKS for the help!!!
Last edited by elm (51 Basket case); 11/20/2014 3:05 PM.