Join Date: Aug 1998
Location: Waldorf Md. USA
It used to be that the "X" rods were a better rod, but beginning somewhere in the mid eighties, they started showing up in a lot of 305's and they are not the same rod. The most important thing to look at on the rods, if you decide to buy them, is the thickness of the beam, about halfway up the length of the rod, measured in a front to rear direction as the rod sits in the motor. The older "X" rods were usually in the .575" area. The newer ones are as thin as .512" and are substantially weaker. If the place you are buying them from cannot tell you this measurement, then I would stay away from them. I personally think you are better off finding a good set of used rods that measure correctly, and have a local machine shop install ARP bolts and resize the big ends. I am not saying this due to my business, I just think it is the best way to go. Price should be very similar.
Hope this helps,
Advanced Automotive Machine
[This message has been edited by BillK (edited 11-28-99).]