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11-24-2006 07:39 AM #1
head flow
ok im used to turbocharged 4cylinder engines and looking at flow #s around 300cfm @ .400 lift for a ported head.
Ive always heard that SBC 350 heads flowed good but when I went to patriot performance and looked at their ported race head flow #s im seeing 230cfm and a maximum of like 290cfm at crazy high lift from what im used to. Whats up with this??? Is the cfm a measure of total head flow, or single valve flow? Why would a little head with tiny valves outflow a huge head with massive valves?
This popped up on Facebook, one of those "Do you mean for the last 40 years..." moments. A drop dead easy and accurate way to check Toe In! -
Toe Adjustment