From that thread:
Here are some numbers that fast68plymouth has posted. I've restricted the numbers to intake flows up to .500". All tests were done on the same bench, bore and pressure drop.
------ TF240-- Stealth-- MCH Stealth-- BOX RPM-- BOX E-street
.100"- 71.6- - - 65-------- 70----- ------- 67--- -- ----62
.200"- 156-- - 144------- 161------ ---- 141--- -- - -122
.300"- 229-- - 207------- 222---- ------ 209 - - ---- 183
.400"- 274.8 - 238------- 263---- ------ 245- ------ 230
.500"- 302.9 - 247------- 289---- ------ 267 - - -- - 262
It’s important to note the E street numbers listed there are for the 75cc version, not the 84cc version(which flow the same as the 84cc RPM).
The 84cc version has straight plugs.
The 75cc E street has some additional valve shrouding because of how the chamber is pulled in closer to the valves.
With some blending, the flow deficit can be mostly eliminated........ for those combinations where the 75cc chamber is a better fit for the application(but don’t want to give up that mid-lift flow).
