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Old 10-25-2007, 08:21 PM
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hydraulic lifters

is there any major power diff. between hydraulic roller lifters vs. hydraulic lifters.is it worth the money roller lifters.

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Old 10-25-2007, 08:55 PM
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The power is in the cam lobe that can be ground to work with a hyd roller lifter. Yes, a hyd roller cam with roller lifters is worth power.
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Old 10-26-2007, 03:53 PM
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its a 1977 chevelle 4 bolt block (454)#361959 and the heads are #3964291 with roller rockers already in them.it has hydraulic lifters, not sure what cam.just wanted to know if it was worth changing over to roller lifters.thanks

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Old 10-26-2007, 04:08 PM
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No, it would not be worth it to change only the lifters. I'm not even sure if you can use roller lifters on a cam designed for use with flat tappet lifters because of the taper on the cam lobes. This taper causes flat tappet lifters to rotate in their bores. Roller lifters, on the other hand, are not supposed to rotate.

You can replace the current cam with a new roller cam and then use roller lifters, but then you get into the question of whether or not it is worth the money spent; this is a question only you can answer because it depends on how you want to use the engine and what your budget is. Personally, I would rather find and buy a block originally equipped with a roller cam rather than retrofit an older block to accept one. You're probably looking at around $700 just for the cam and lifters alone, not to mention whatever valve train upgrades are necessary to use them.

If you have a running engine and/or vehicle and are looking for a performance boost, your money is probably better spent elsewhere, especially if you're on a budget.
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Old 10-26-2007, 04:23 PM
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thanks for imfo.
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