Is there a better roller lifter than gm for .....?
04-10-2015 | 04:11 PM
#31
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Joined: Feb 2011
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Even if detonation isn't an issue, and I don't think it will be, I think this set up will be a drive shredder. The cam that I have now is a 229/229 -.600 lift, 114 lsa . I have 17.5" of dry pipe to the wet elbow and diverter to the y pipe. I'm pretty sure this set up will be in the 550+ range with my heads. I've decided I would be happier in the sub 500hp range for what I want to do, which can be done with a pretty mild cam with my heads...this means I don't need a lobe that requires 150#+ seat pressure, which means I don't have an ideal lifter in the Morels I have. So, is the GM roller the best option for me? I re-read my post #1 and I must have been off my game that day.
What about simply increasing the LSA instead of greatly reducing the lobe's lift and duration? If you move the lobe centerlines further apart, wouldn't that decrease overlap, and therefore reversion? Then you might still be able to run your silent choice while still making some good power. Of course, you would expect a valvetrain with lower lift to last longer, but maybe not so much if proper components for a stable valvetrain are selected.
04-10-2015 | 09:01 PM
#32
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Joined: Aug 2010
Posts: 2,227
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From: Cape Coral FL
I am running the GM lifters at .625 lift and around 145/450 spring pressures and they work perfectly. Just make sure that they don't hit the dog bones at max lift and don't fall below them on the base circle and you will be fine. I personally and also a good friend have had bad experiences with the Morel lifters and I would personally not buy another set.
