Flow Bench

[geoffinbc]

Does anyone have flow bench numbers? I have searched the internet but came up empty.

Right now I am looking for iron head numbers. However we should one day try and get all the heads and add them to the site.

[bszopi]

RE: Flow Bench

If I dig through some of Chris's stuff, I can get numbers for Gen2 and Gen3 heads.

[Doubt_Incarnate]

i dont have the site adress, but heres what i got from there on iron heads
lift intake exhaust
.100 50 50
.200 90 79
.300 125 98
.400 157 103
.450 169 107
.500 177 110
.550 177 110

he said it was from his flowbwnch, i plug those numbes into dd2k. seem to work right

[oil pan 4]

177cfm on the intakes!?!!?!?!??
Maybe ported at 40'' of water.
Different flow benches @ 28'' of water on stock heads give about 117-121cfm at .4'' and it stays at about that much flow (117-121cfm) to .55''

[oil pan 4]

Heres one:

http://www.supersixmotorsports.com/PDF/93-95GM3.4PowerPakDataSheet.pdf

It has ported and un ported.
These numbers for un ported heads are very consistant with other flow #'s I have seen, well there with in 9% of each other if they both flowed them with 28'' of water and stock valves, the "117cfm" #'s were.

[geoffinbc]

Sweet.

Thanks guys.

I think I will whip up a short comparison chart.

[oil pan 4]

Go for it.
Over the years the casting number stays the same but they quality changes a bit.