SBM Roller Lifter Choice
Trying to piece together my knowledge on this topic. So we are talking strictly 340 and preroller 318/360's right? These blocks need mods and retrofit lifters?
While the roller 318/360's will not require anything special like bushing the bores or special retrofit lifters? Is there a thread or article that lays all of this out?
I have no personal experience with the roller 318,360, so I cannot comment. But as far as I know those blocks are not much different,
But it may be the design of the factory roller lifter that allows them, to work trouble free.
A performance application with more cam lift may be a different story.
You are right that we need a sticky thread on this subject as it comes up all the time when people like the Op buy hydraulic rollers and report problems.
The original Chrysler engine book explains the problems with trying to run solid rollers in the earlier non roller blocks.
One of the previous posters who showed pictures of the drilled passages not being even, also sheds some light on the problems.
Perhaps some others can chime in. According to the Chrysler book, to run a roller cam trouble free with good oil pressure, requires tubing the block or bushing the lifter bores to control excessive oil leakage. Not much has changed to alleviate this issue, yet there are some companies marketing drop in replacement hydraulic(more leakage) roller lifters. Some people have no problems, others do.
