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Old Apr 24, 2013 | 12:02 PM
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Default Another pushrod thread

So I am putting in my new heads (prc stage 1 ls6) and cam (MS4) together. I am using a pushrod length checker (using stock rockers with the comp upgrade) and I just want to see if what I am coming up with sounds right.

With cyl 1 on base circle, the pushrod checker at 7.300 it is barley loose to the rocker. So I give it a quarter turn and it is now up lightly touching the rocker, which would give me 7.3125 so if I add in 0.050 pre-load it should put me around 7.362.

I have 7.375 pushrods, would I be ok running those?



This is my first time ever doing this and just want to make sure I get it right Thanks
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Old Apr 24, 2013 | 12:33 PM
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LS7 lifters? Yeah that should be fine...You can order custom length push rods as well.
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Old Apr 24, 2013 | 01:10 PM
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Have you set up a wipe pattern to actually make sure your length will be correct?

What are you giving a "quarter turn"? The rockers or are you extending the pushrod checker out?

Just questions out of curiosity lol.

Were the heads milled at all for more comp?
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Old Apr 24, 2013 | 01:20 PM
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Originally Posted by 03Sssnake
LS7 lifters? Yeah that should be fine...You can order custom length push rods as well.
sorry I forget to mention those, Yes ls7 lifters
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Old Apr 24, 2013 | 01:23 PM
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Originally Posted by SinisterWS6
Have you set up a wipe pattern to actually make sure your length will be correct?

What are you giving a "quarter turn"? The rockers or are you extending the pushrod checker out?

Just questions out of curiosity lol.

Were the heads milled at all for more comp?
The quarter turn was on the pushrod checker. they are 64cc for now.
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Old Apr 24, 2013 | 01:25 PM
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Originally Posted by Z28MJ
sorry I forget to mention those, Yes ls7 lifters
LS7 lifters are ok with a little more pre-load, have mine around .070...I have heard anywhere from .060 to .100 is within an acceptable range, a little more tends to quieten the valve train.
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