[Jac Mac]

Just a warning on that F4--- 351 roller block, there is a cracking issue that is coming to the attention of USA builders, in the #2 & 4 cam bearing area where the bolt for the lifter retainer spyder bolts on, cannot be seen until the cam bearing is removed, if the crack develop's further the cam bearing can move & therefore cause an oil pressure drop along with a few other critical issues. Might be a problem worth looking into on production 5 liter roller blocks as well. Pic attached is from ford strokers website.