WOT-Tech 3400 Boost Heads

[WhiteV6]

There was a discussion that brought up flow numbers. Well, here they are, the flow numbers for my boost heads. They are in pdf format.

http://wot-tech.com/boostintake.pdf
http://wot-tech.com/boostexhaust.pdf
http://wot-tech.com/3400stockvsstreetstripvsboost.pdf

Intake, exhaust, and a sample comparison between stock, street/strip, and boost. 28" of water depression, 3.7" bore used.

I will have pictures later.

[WhiteV6]

Guess I should have called them stage 3 instead...

[[ion] C2]

Guess so. I like the flow numbers.

[Spilner521]

Guess I should have called them stage 3 instead...
Why call them stage 3? That doesn't tell anyone anything. At least calling them "boost heads" would tell someone that the ports are opened up and optimised for a boosted engine.

[WhiteV6]

When the bronze guides are in and the heads are ready to ship to swaintech, I will post the pics.

Glad you like the numbers:) Once my new store is up (which is so much nicer than v3), I will work on the packages. The numbers with manifolds is far more important, and the taper/velocity is more defined for specific applications.

Out of curiosity, what does a 2.4 or ecotec (or whatever the 4 cylinder crowd uses)? I know its a lot, especially at lower lifts.

[Spilner521]

Are you talking about flow numbers for a 4 cylinder head? I haven't seen Eco numbers, but here's some for the LD9:


Stock 2.4 Head--------Ported 2.4 Head
Intake:
.100 lift 90.3 cfm--------107 cfm
.200 lift 155.9 cfm ------162 cfm
.300 lift 217.7 cfm ------224 cfm
.400 lift 258.9 cfm ------268 cfm
.500 lift 277.9 cfm ------282 cfm

Exhaust:
.100 lift 81.2 cfm-------79.65 cfm
.200 lift 119.5 cfm------140.1 cfm
.300 lift 126.0 cfm------173.3 cfm
.400 lift 129.2 cfm------180.0 cfm
.500 lift 135.5 cfm------183.0 cfm