Pushrod length

[Sinnister69]

Bone stock ls3 besides summit 8707R1 cam with .600@ lift on both lobes
And johnson 2110 lifters

Is it normal to measure varying pushrod lengths?



Using ms racing ls pushrod length checker and checking springs
I did the odd bank today and these are my results

[Sinnister69]

Figured i would try some math

Is it good to add up all my intake #’s with the .035” preload and then divide by 4 to get the average pushrod length then add or subtract that average number to each individual intake to see if i am within the recommended .035” preload +/- .010”
This method i became well in spec
Same was done with exhaust
Once i do the even bank i will divide by 8
But doing this experiment has my intake length at 7.3465” and exhaust at 7.3621”

I can easily order custom length pushrods

[dhutton]

Are you checking and verifying the wipe on the rockers?

Don

[Sinnister69]

Thats my next step

[dhutton]

Hmmm I thought the wipe determined the pushrod length. Admittedly it’s been a while and I dont do this very often.

Don

[Sinnister69]

Its an ls3. Bolt down the rocker to zero lash on the checker then add preload to zero lash length so i dont think u need to check wipe