Originally Posted by karter74
Hey guys, I need some help on deciding what pistons to use on my rebuild of my 87 XJ. I don't plan on stroking it due to my inability to find a 4.2 crank and rods (if you know where I can find some, please tell me!) so I want to go ahead and just do a small build up of the 4.0. Right now my current plans are getting either the Sealed Power 677P or the Hypereutectic pistons of the same. I will be boring the engine .030" over and putting in either Crane Cams 753901 or 750501 (can't decide, since I'm not stroking the engine, what cam is good for me?) I hear good/bad things of the Hypereutectic pistons, saying they are stronger, yet more brittle to higher performance. Which should I use to rebuild the engine, Hypereutectic or the normal cast? Thanks!
PM Mudlover to ask about the crank
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