[Stan Weiss]

Originally Posted by Scubasteve95

Jay,
not sure what the last motor was ,the 190-195 will be the new set up as per the "cranking pressure calc" I'll know for sure in a week or so.
SO getting back to the original question.
" 11.4:1 "
i did a lot of reading and some math to figure out what the 2 big Pontiac shops and my builder were trying to tell me. ( tried to use a forum and take the easy way out)
has anyone looked at the cam card?
with the intake closing @ .050 73 ABDC she will not start make pressure until late in the compression stoke so it needs a higher compression to take up the slack in the low to midrange area...NOW lets just hold are key boards.....
I may not have worded this right or at all but you know were I'm going with it.
here is a good read for those of us who feel the need to read it.
wish I found it a few days ago I hate math.

https://www.motortrend.com/how-to/81...e-compression/

as for the cast parts this set up is not to far past the last set up ,would a nice shiny forged rolling assembly be better maybe so but i do not foresee a problem with the power I'm making.
ok gentlemen have at it.

Sorry but I don't see the cam card posted.

When the motor is running I would interested to see how close that cranking compression calculator is. It uses 0.050" IVC plus 15 degrees. For a hydraulic cam I would want to use IVC @ 0.006"

Stan