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.stock Rocker Arm Ratio?


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You are indeed correct sir. 1.7:1 Investment cast roller trunnion rockers on your LQ9 engine. Part number 10214664 if you are interested in that.

 

Mike

Edited by Vortec MAX
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You are indeed correct sir. 1.7:1 Investment cast roller trunnion rockers on your LQ9 engine. Part number 10214664 if you are interested in that.

 

Mike

 

 

are that an upgrade or a replacement p/n?

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what is consider a high lift cam?

 

I believe anything .600+ lift IMO..........in order to use 1.85 rockers, you will have to change the valve covers also....

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FWIW. . .anything other than the stock 1.70 rocker ratio is NOT recomended for cams with agressive cam lobes at all. if you do a cam swap there is no need to change rocker ratio as that method is a cheap and inefficient way of doing it

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