Thread: roller rocker help

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the bottom end was built when I bought it so I don't know the technical details. Again, any info would be greatly appreciated

Originally Posted by CJ 613

the bottom end was built when I bought it so I don't know the technical details. Again, any info would be greatly appreciated

Have you bolted the heads to the short block yet?

no, not yet. I'm not sure if I want to run the 1.94s or not yet. I've been told that I may not get the power I'm looking for with them. I may need to go up to a 2.02.

Originally Posted by CJ 613

no, not yet. I'm not sure if I want to run the 1.94s or not yet. I've been told that I may not get the power I'm looking for with them. I may need to go up to a 2.02.

What kind of power number are you looking for?

By the way, If the heads aren't on the motor yet, then you have a golden opportunity to measure the piston deck height.

how do I measure the piston deck height? And again, any response is extremely appreciated. I know I may be biting off more than I can chew but why not right? I love the knowledge everyone is so willing to share and it really helps guys like me. So thanks!!

also, here is a pic of the intake on the block-its not too clear but it gives you somewhat of an idea what I'm working with.

This measurment exercise assumes that you don't own an 8" dial caliper.
With the motor on a stand, tilt it so that one bank is level. Using a steel rule and a set of feeler gauges, we'll find the actual piston deck height. Standing at the side of the block, span the edge of your rule across the bore about 1/4" from the edge of the bore at either the 3 oclock or 9 oclock position. Slide feeler gauge blades between the bottom of the edge of the steel rule and the piston crown. Checking at noon or 6 oclock will allow the piston to rock on its wrist pin and tilt one way or the other, giving you an erroneous reading. 3 or 9 is directly above the pin. Rotate the crank a few degrees backward and forward and re-check your measurement to make sure the piston is at TDC. Do this measurement on each of the four corners of the block to see if there is a slope to the block front to rear and/or a difference from one bank to the other.