CanoeU

The 48mm TB should flow 670cfm or so, and i am going to attempt to match up the rest of the intake. Maybe aiming for 800cfm with a 52mm TB.


Does anyone have flow numbers(cfm) for the stock plenum?
Ported Plenum?
Runners?
Heads?
Anything I'm forgetting?

vettenuts

Check the 3rd Gen Camaro board, they have a good comparison there of those and aftermarket parts as well.

cshuman

Get a copy of "Insider Hints" from TPIS. They have flow #s on all those items.

CanoeU

Anyone have this book, or is it mandatory to buy it to find out these flow numbers??


[Modified by MattJungels, 5:11 PM 9/25/2001]

CanoeU

Anyone?

Aaron's 87

Again, there are some flow numbers at the http://www.thirdgen.org tech articles section.

Here are some flow numbers I got in an email. Remember, flow numbers are not gospel. A lot depends on the bench, who's using it, the weather, and if it's been calibrated.

Hey, finally a question to which I have the answer!! I compiled the data
below from two sources (GM High Tech Performance magazine and TPIS
Insider Hints reference).


From GM High Tech Performance July 2000 issue:


Runners:

Stock: 203.17 cfm

Accel: 242.02 cfm

Extrude/Accel: 275.83 cfm

Super Ram: 289.18 cfm


Stock Intake w/ the Following Runners:

Stock: 198.72 cfm

Accel: 213.52 cfm

Extrude/Accel: 217.11 cfm

Super Ram: 220.67 cfm


Accel Intake w/ the Following Runners:

Stock: 215.83 cfm

Accel: 232.53 cfm

Extrude/Accel: 243.21 cfm

Super Ram: 240.24 cfm


Stock Intake w/ 3/8" Radiused Inlet: 222.45 cfm


Accel Intake w/ 3/8" Radiused Inlet: 251.51 cfm


Extrude Honed Accel Intake w/ " ": 275.83 cfm


Extrude Honed Accel Intake w/ Accel Runners: 266.94 cfm


---------------------------

From TPIS Insider Hints:


(note: TPIS' flow data on same components varies by approximately -15cfm
versus GMHTP data)


Stock throttle body: 668 cfm

" with TPIS airfoil: 709 cfm


Stock MAF: 529 cfm

Screens out: 711 cfm

Fins removed: 750 cfm


Stock intake base w/ stock runners: 181 cfm (vs. 198.72 cfm in GMHTP)


Stock intake base w/ cast large runners: 193 cfm (vs. 213.52 cfm " ")


Stock intake, stock runners, ported plenum (presumably stock 48mm TB:
183 cfm


Stock intake, stock runners, ported plenum, TPIS airfoil: 187 cfm


Ported intake, stock runners, ported plenum, TPIS airfoil: 193 cfm


Ported intake, siamesed runners, ported plenum, TPIS airfoil: 203 cfm