~~! Russ! Don't let it get you down.... it's the anti-Save A Gremlin- Faction.......{juuuuuuuuust kidding folks}. Go to www.strokers@xxxxxxxxxxxxxxx and JOIN! You are entering the area that they are all about. Check the site for 'Dino' s homepage as he has an outline of his build > you'll get all the skinny as to what where and which parts. I'll tell you now that you'd be ahead of the game using a 96 or newer 4.0 as a starter > block was upgraded in a number of areas with thicker webbing etc. and they come with main stud girdles from the Factory . The crank nose is the difference. You'll find the 'fix' on the site. The early 258 cranks up to '79 have the 12 counterweights > the '81 + have either 6 or 8 or 10 counterweights. Pistons are the question & you'll need to read up on the options as 'Quench' on these are critical. There is a lot to these Stroker Engine Builds so update your 'Specs' & enjoy the wealth of Info this group has generated. They'll give you total support on your Build & answer any question you have - regardless - by the next post > usually 12 to 24 hrs. Welcome to Strokers Russ ! Brien. NEW YORK eagle registry #501 eagle kammback registry Message-ID: <20050707025851.61353.qmail@xxxxxxxxxxxxxxxxxxxxxxxxxxx> Date: Wed, 6 Jul 2005 19:58:51 -0700 (PDT) From: <mail@xxxxxxxxxxxx> Subject: 4.0 questions To: mail@xxxxxxxxxxxx I have my 4.0 Jep engine tore down, ready to be checked out. I have some questions maybe someone can answer as I have never messed with these engines before. I have a lot of 232/258 time behind me, though. First, the soft plugs seem to be 50 MM in size, is this correct? I assumed they would be standard sizes, but in comparing them I came up with 50MM. This engine came out of a Jeep that must have been rode hard and put away wet as every oil galley hole was plugged with dirt. Maybe a mudder?? The crank was in good shape and the engine still ran. What should I look for. I have it stripped bare and will hot tank it and measure the taper, bore, crank align, etc. I plan to put a 258 bottom into it, any year suggestions. The 4.0 is an '87. What should I do to the bottom end? Thanks all......Russ