What rocker arm ratios do people see? Options

[stugray]

I am adjusting the valve geometry while putting in a Raby 9700 cam and I am seeing .38 on the exhaust cam lift and .496 at the valve (an exh rocker ratio of 1.3) and I have a .39 on the intake with a .546 at the valve ( an int rocker ratio of 1.4) is this what everyone else gets for rocker ratios:

Intake rocker ratio = 1.4
Exhaust rocker ratio = 1.3

These are the 1.7 (1.8?) rockers that accept the 911 swivel feet.
I am using the swivel feet, have modified the rocker faces, adjustable push rod, and zero lash to do the meaurements.

Do those rocker ratios look like stock?

I want to take 50 thousandths off the Combustion chambers to increase the CR, but my measurements say I wont have enough clearance on the Intake valve once I shave off 50 thousandths.

I only have ~0.075 clearance now from the piston to the Int valve as it is with a deck of 0.030 and everything else (crank & rods) stock - flat top 96mm pistons.

That Intake valve travel of ~0.55 looks huge to me. Anyone else care to comment?

Stu

[stugray]

You have not milled out your heads but you are setting your geometry on the valve train?

Not exactly - I am measuring how much clearance I have now so that I know how much I can shave from the heads with this cam & rocker setup.
I know that I have to do this all over again after I cut the heads.
I have not cut any pushrods yet.

Right now I have .073 clearance on the Intake valve.
Cutting .050 from the heads will leave me less than .023 on the intake.
So I Plan on relieving the pistons, but only if I have to.
If I change to the 1.3 Intake rockers, I will make it.

if I hadnt measured, I wouldnt have known I had 1.4 Intake rockers....
Stu