I had a bad Hyd lifter in my 71 340 Cuda and am going to replace the lifters so I ordered new Comp pushrods as well. It's got a non-adjustable valvetrain so I just ordered the one's out of the Summit book listed for the 273-360 engine. The others listed said they were for use with solid lifters and another set was for use with Hyd lifters and adjustable rockers. I put one of the newer ones along side one of my old ones and the newer one looks just a wee bit shorter??
Wonder if for some reason my car had longer pushrods installed in it when I got it way back when. It has had a Comp Magnum hyd cam in it since I got it with .470 lift and the duration @ .050 is 224.
I'm certainly not as knowledgeable as most of you in this area and am looking for some direction as to reasons and if I need to reorder somethinf else??
Thanks.......'Tim"