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18* Head flow numbers inside = )

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Old Mar 11, 2006 | 08:54 PM
  #1  
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18* Head flow numbers inside = )

well finally i have heads that flow great.

Brodix 18c

Lift intake and exhaust at 28" drop


.100 64.6
.200 129.4 128.2
.300 198.1 191.4
.400 262.0 232.5
.500 314.3 252.0
.600 347.9 262.2
.700 373.9 267.2
.800 378.3 270.0
.850 378.7 270.2

Im very happy with the results.The heads flowed within 2% of advertised. The exhaust outflowed my brodix 10x unported on the Intake side lol.
the only thing i have left to do is pick a cam.Im thinking of going with cam motion.What cam and/or cam company do u guys recommend???(anything but comp cams)
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Old Mar 11, 2006 | 09:24 PM
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Nice.

What's the setup going to be?

Cam Motion should be good.
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Old Mar 11, 2006 | 09:44 PM
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setup so far is

sbc dart block 4.185 bore 3.875 stroke 426"

compression is going to be around 14+ :1 .
Flat top pistons netted 13 to 1

Brodix Intake manifold converted to efi (dfi gen 7 , seq,wb)

1 7/8 Stahl headers

400 trans reverse manual valvebody
Stall??rearend gears?? to be picked when after engine is dynod.
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Old Mar 11, 2006 | 11:41 PM
  #4  
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Brodix 18* heads are nice. A bud built a simular thingie using these heads. I know you don;t like Comp cams but this is the cam he used. Worked very well over 700hp N/A and 1300hp on the juice. 309/322
advertised duration and 272/284 at .050. The
lift would be 704/672 with a 1.6 rocker and set
it up on a 112 lobe separation.

grind number is 309-6/322-3
SR112. it's a custom grind. If you want a small base circle you have to specify this. ( 400 ci)
Sounds like a lot of cam but a large ci motor eats it up pretty quick.

Can't argue with the results.
Attached Thumbnails 18* Head flow numbers inside = )-enhwheelie1.jpg  
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Old Mar 12, 2006 | 12:22 AM
  #5  
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309/322 advertised duration and 272/284 at .050. The lift would be 704/672 with a 1.6 rocker and set it up on a 112 lobe separation.

now thats a big cam. Im using a crane shaft roller rocker 1.7 on the intake 1.6 on the exhaust.im going to fax over my engine and car info to cam motion , im really curious what they would recommend.i`ll post the cam spec as soon as i get them from cam motion.
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Old May 21, 2006 | 09:42 AM
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Here`s my cam specs to my daily driver
Intake Exhaust
Duration 282 288.5 @ .050
Lift .782 .714

Lobe separation 109.9
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Old May 21, 2006 | 11:02 AM
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From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
Those numbers will get it done on your motor. What size ports are on those heads? Thanks
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Old May 21, 2006 | 12:14 PM
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From: stuart fl
Car: 82 camaro
Engine: 434 ci
Transmission: t400
Axle/Gears: 9'' 4.10 gear
I have had good results from cam motion love them 18 deg #
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Old May 21, 2006 | 12:28 PM
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Originally Posted by 1989GTATransAm
Those numbers will get it done on your motor. What size ports are on those heads? Thanks
intake port is 280cc
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Old May 22, 2006 | 02:09 PM
  #10  
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From: Springfield, MO
Car: 92 T/A VERT
Engine: LB9
Transmission: AUTO
Axle/Gears: 7.5 / 3.42's
Originally Posted by daverr
Here`s my cam specs to my daily driver
Intake Exhaust
Duration 282 288.5 @ .050
Lift .782 .714

Lobe separation 109.9
Yes, yes..... That will be perfect for putting around in the city.
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