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Thread: doing pushrods...
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07-14-2009, 03:02 PM #1
doing pushrods...
Anything special i need to know?
I know the obvious, remove coils, valve covers, rockers one by one..
When i put the rockers back is there a certain torque or just tighten em till their a little snug and dont dance around side to side?
i did rebuild my little 305 but im not sure if it'll be the same process removing rockers on a ls1..
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07-14-2009, 03:51 PM #2
Yea, its straight forward with stock rockers. Just tighten them to 32 FT lbs. Oil the push rods alittle maybe. Spin the motor over a few times and re-check the torque. Since your just doing pushrods, pull the fuel pump fuse and have the coil, obviously disconnected. Thats what I do. I just put it all together and hand tightened the valve covers for the motor turn. Very easy, quick job. Have fun!
Edit - Sometimes German torque is ok.... but for rocker arms, I really hope you didnt mean... just snug them up! You need to torque them, and I do them in two stages just because thats how I do things. All to 16 Ft lbs, Then 32 ft lbs. Make sure you have a 8mm socket and a adpater if your using a 3/8 TQ wrench.Last edited by Hi-Po; 07-14-2009 at 04:20 PM.
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07-14-2009, 04:19 PM #3
Sweet, thank hi-po! I was thinking about just sending you a pm
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07-14-2009, 04:23 PM #4
Im sorry, I mis spoke... its 22 ft lbs. Not 32 lbs.
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07-14-2009, 04:29 PM #5
So should I torque em first to 11 and then 2nd pass to 22?
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07-14-2009, 04:29 PM #6
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Red Tint Jewelcoat- 2008 Trailblazer SS
What are you putting in as replacements?
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07-14-2009, 04:30 PM #7
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07-14-2009, 04:37 PM #8
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07-14-2009, 04:57 PM #9
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07-14-2009, 05:00 PM #10
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07-14-2009, 05:10 PM #11
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07-14-2009, 05:35 PM #12
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07-14-2009, 11:21 PM #13
- Join Date
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Red Tint Jewelcoat- 2008 Trailblazer SS
Those same stockers shouldn't bend unless they are used in an application where they are mechanically over-revved.
Using the hardened pushrods with the stock valvetrain.....is asking for disaster in case of said over-rev.
Will disaster happen with hardened pushrods??? Probably not. But since you have the stock cam and stock valvesprings, replace the 1-2 bent stockers with stockers....until you need hardened pushrods.
Always nice to have a safety valve....
Plus, it is $8-16 and some labor instead of $110 plus shipping.
Running hardened pushrods with the stock valvetrain.....will create contact between the piston and a valve when over-revved.
Granted, this can happen with aftermarket valvetrain as well.
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07-15-2009, 09:16 AM #14
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07-15-2009, 09:16 AM #15
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blacker than wesleysnipes- 98' trans am
hardened ones will not give..meaning something else has too
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07-15-2009, 11:43 AM #16
Ahh man.. I guess ill save my hardened pushrods till I get my cam and upgraded valvetrain ops:
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