Engine rebuilt by Norm Case of Precision Automotive.
Some parts were replaced in the 302 DZ.
The cam had been changed. I think it might be a Crane cam.
One of the lobes was wiped out. Frank called it a “eco fuel saver cam”.
Norm changed it to an exact equivalent of the original 30/30 with a Comp Cams kit #CL12-107-3.
Cam Style Mechanical flat tappet
Basic Operating RPM Range 2,800-6,800
Intake Duration at 050 inch Lift 254
Exhaust Duration at 050 inch Lift 254
Duration at 050 inch Lift 254 int./254 exh.
Advertised Intake Duration 346
Advertised Exhaust Duration 346
Advertised Duration 346 int./346 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.485 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.485 in.
Valve Lift with Factory Rocker Arm Ratio 0.485 int./0.485 exh.
Lobe Separation (degrees) 114
Camshaft Gear Attachment 3-bolt
Intake Valve Lash 0.024 in.
Exhaust Valve Lash 0.024 in.
Grind Number 346S
Pics of the block
One of the guys working there said the double roller chain on the crankshaft is not correct. I looked it up and stock is supposed to be timing chain (3896961), crank sprocket (3896959) and cam sprocket (3896960).
