[priobe]

Hello,
Can anyone explain these numbers to me. I had my edlebrock heads for a 427 FE ported & polished. And these were the numbers that they gave me back.

2.190" Intake 1.730" Exhaust
.200 150.4 .200 114.3
.300 206.5 .300 151.5
.400 256.6 .400 179.2
.500 292 .500 195
.600 306 .600 208
.700 312 .700 220

Can anyone explain this to me.

They also gave me these numbers as well for my Camshaft

Cam

Intake
Duration @ .050 245 degree
Valve lift .660
Lobe Separation 112


Exhaust
Duration @ .050 250 degree
Valve lift .665

Opion are welcomed on this please