Generation III Internal Engine 1997-2006 LS1 | LS6
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Advice on LS build with 1.8 rockers

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Old Apr 13, 2021 | 12:24 PM
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Originally Posted by DrJones
Atsma thx for replying
not exactly sure what you mean by “setup”
Are you referring to PTV clearance? If so, what I have done with my BTR .660 springs still installed, removed all rockers & plugs installed the 1.8s on cyl #1 and very carefully rotated the assembly being hyper sensitive to any changes in rotating efforts and I did not feel anything at all other than the springs.
And to my surprise I didn’t get any coil bind either. Also the roller to valve tip wipe looked pretty good with the 7.40 push rods.

thoughts??
The wipe pattern is what it is, whether using 7.4, 7.8, 7.3, long pushrods. The rocker position is fixed. Period. All your doing with different length pushrods is changing the preload on the lifter plunger. On the original SBC, the rocker arm moved up and down when changing different length pushrods, and that would change the wipe pattern. Unless you shim the LS rockers, the wipe pattern will NOT change.......
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