Originally posted by Twisted6 I.I #3220:
a lump ported head with MILD (port work)cast iron head.And Flow tested on a Super Flow SF-1020 flow bench.
Intake 194 --- Exhaust 1.6 @28"
.100 63.5 --- .100 56.5
.200 128.6 --- .200 105.3
.300 177.9 --- .300 130.8
.400 215.2 --- .400 149.6
.500 234.0 --- .500 163.7
.600 244.6 --- .600 173.9
.700 250.5 --- .700 180.5
.800 251.9 --- .800 184.5
These numbers are of a head that my lumps were installed.And had only mild port work (valve area)& Had Only port matched the head to a Mrgasket int & exh gasket. The port was Not touched other wise.(meaning The roof was not rasied Or was the intake port widened.
I hope this helps.
Ps you can not compair a SB head to our L6 head
when it comes to flow numbers.
Ok I have to correct myself on this one.Because I had mixed up my flow sheets.
This Head was a 194. Which had a 1.94 in. and a 1.6 Ex. The head was milled down. Then The combustion chamber opened up around the Valve to unshroud it. Finaly CCs were 66.4 .
Valve guides Shaped & bowls blended to the valves
The Port was Only matched to a 155 MrGasket gasket. The Port could have been Rasied and Widened But we did not.
As for the exhuast No lumps Valve guides reshaped and Blended Pocket Blended to the Valve.
God doesn't like ugly.
