Originally Posted by tippmann243
the 7th vin tells you the body type and the only numbers that are available are 3,4,6,8,9 so the 7th vin has nothing to do with motors you want the 8th vin like i said earlier
so much misinformation
cpi motors arent technically a vortec motor but they ALL came with a balanced shaft and all had roller cams, my 89 tbi motor im rebuilding has a roller cam
the cpi motors also came with heads that flow WAY better then tbi heads
all in all the "vortec" name is just so the salesman can point and say hey look its got a vortec motor that means its got power
i take engine apart all the time i work at the local junk yard.
i have taken CPI intaks off of older blazers and seen NO roller cam!!!
the last one i saw a was a 93 blazer had CPI steel vavle covers and NO Roller cam! it has solid lifters!!!
now this i'm not 100% sure of where is the balanced shaft?
is this the part located ablove the cam?
if so then definetly not all vortecs had a balanced shaft!!!
all my information is from experiance NOT FROM A BOOK!
just becasue it's a 96 also does not mean it had bolts that go straight down on the intake.
to me a true vortec has balanced shaft, roller cam and had with the bolts that go straight down.