Stock rocker arm ratio ?

[434nova]

What is the stock rocker arm ratio for our engines ? I have 1.65 roller rockers now. Thanks

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[turbo nasty]

1.55

 

[whitehot1]

It's on here plus some other info that may interest you.

http://www.gnttype.org/techarea/engine/enginespecs.html

 

[434nova]

Thanks for the info guys.

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[earlbrown]

It's rated at 1.55 but the actual ratio changes as the rocker goes through it's motions. As the valve opens the distance from the fulcrum moves outwards increasing the ratio.