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Thread: roller Rockers on a stock LS1
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07-11-2008, 06:12 AM #1
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PEWETER METALIC- 2002 CAMARO Z-28 M-6
roller Rockers on a stock LS1
Any gains from these or driveability issues on a stock motor with just a K&N FIPK and magaflow cat back? Im thinking the 1.7 ratio as I believe stock is 1.6 correct me if im wrong? Thanks for the help.
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07-11-2008, 06:18 AM #2
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07-11-2008, 06:29 AM #3
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07-11-2008, 06:34 AM #4
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07-11-2008, 07:15 AM #5
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07-11-2008, 08:06 AM #6
If anything, upgrade to a better rocker that doesn't like to puke out needle bearings.
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07-11-2008, 08:20 AM #7
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07-11-2008, 08:36 AM #8
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PEWETER METALIC- 2002 CAMARO Z-28 M-6
cool I'll check those out. Thanks
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07-13-2008, 11:00 AM #9
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Mag Red- 2002 Vette
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07-13-2008, 11:05 AM #10
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07-13-2008, 11:15 AM #11
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black- 99 formula firebird
so with a bigger aftermarket cam what rockers would you recommend mr.luos
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07-13-2008, 11:32 AM #12
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07-13-2008, 11:44 AM #13
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07-13-2008, 04:36 PM #14
A few thing to keep in mind w/ the rockers (and anyone feel free to correct me if you think I'm wrong)
1. The rollers will free up a few HP due to less friction/parasitic loss
2. However, the roller rockers are heavier, so more "mass" moving around.
W/ that being said, I would expect very little gain from rollers, but that's just MHO.
dale
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07-14-2008, 02:16 PM #15
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Mag Red- 2002 Vette
A longer pushrod will only alter the lifter preload, it will not alter the wipe pattern. Gm set up the rockers to run a certain lift and fixed the pivot location within a tolerance that would provide an acceptable wipe. As you alter the lift then the wipe changes, and not for the better. Most don't check wipe patterns when they set up a new cam.
One other point, as the wipe widens and you increase the spring loads to support and aftermarket cam, aftermarket heads with bronze guides will have a dramatic increase in guide wear. Bronze guides could wear out in as little as 10K miles given a bad setup.
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07-14-2008, 03:00 PM #16
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Red Tint Jewelcoat- 2008 Trailblazer SS
By wipe...you mean side to side movement on the valve tip correct?
I am running a .630 cam with stock rockers, and I have kept an eye on them. They haven't 'moved' side to side any more than it did when stock.
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07-14-2008, 03:34 PM #17
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07-14-2008, 03:47 PM #18
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07-14-2008, 04:54 PM #19
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07-14-2008, 05:11 PM #20
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