Post by pf2racing78 on Dec 24, 2015 9:41:57 GMT -6
I made a post a while back about selecting the right cam for vaccum rule and all replys were great help. thank you. anyways i am now building another engine for stock class with a 15" vaccum rule and one day while searching the web for engine parts i came across a couple different camshafts that people are selling that say these cams will pull 15" of vaccum. that is how they are advertising them, as vaccum rule camshafts. they are solid lifter cams which would be great to run because of the valve floating issue i have had in the past. my question is can i put these cams in any engine and bank on my vaccum to be 15"? or is all of that going to depend on compresssion in the engine and such things. just looking to see other engine builders opinions. thanks!
CAMSHAFT SPECS BELOW
· In Dur. @ .050” 244°
· Ex. Dur. @ .050 244°
· In. Lift .518
· Ex. Lift .518
· Lobe Sep. 112°
· Adv. In. Dur. 274°
· Adv. Ex. Dur. 274°
· Valve Lash .024/.024
CAMSHAFT SPECS BELOW
· In Dur. @ .050” 244°
· Ex. Dur. @ .050 244°
· In. Lift .518
· Ex. Lift .518
· Lobe Sep. 112°
· Adv. In. Dur. 274°
· Adv. Ex. Dur. 274°
· Valve Lash .024/.024
THIS BECAUSE I HAVE FOUND MORE INSTALLED AT 108 CENTER LINE ON THE INTAKE BUT THE EXHAUST IS ALL ABOUT THE HORSES! CLOSING NUMBERS ARE MOST IMPORTANT AS TO REVERSION, EXPANION, TEMPS,AND COMPRESSION RATIOS!!! GEOMETRY IN THE ROCKER CAN MAKE OR BREAK THE BEST OF CAMS OR SETTINGS PICKED OUT TO DO A JOB CORRECTLY!!! AND YOU KNOW THAT .024 IS NOT GOING TO STAY THAT WAY FOR LONG HAMMERING AWAY AND NO SPLIT TO HELP WITH SPLITS AS HEAT CHANGES IT ALL!!! EVEN I AM STILL PUZZLED AS TO THE LACK OF PERFECTION TO SALE SO MANY!!!