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Originally Posted by CarsByCarl
There's really no performance advantage to a hyd roller and as long as you use the proper oil with the flat tappet it'll actually be more durable than a roller. |
I have to disagree with you on this. Ford has been running roller lifters since 1985 and I believe GM started in 1986. If durability were an issue the manufacturers wouldn't use them in 100,000+ mile motors.
As for performance, just the reduced friction and resulting
oil temp is enough for me. Also a roller follows the cam precisely allowing for faster opening ramps.