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Discussion Starter #1
Good Morning,

in my 434 Dart with 9:1 compression and Dart Pro1 heads I've got the following camshaft installed. I'm wondering if the specs really fits my car setup.

- 2800lbs
- 4.10 gears
- 28x10,5 MTs
- 8" ATI Treemaster with 5000rpm stallspeed.

I'll be happy about any opinions :)





greets
carl
 

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The first question that I have is Why are you asking this question?
12-000-9 is a Competition cams custom grind number. Did you buy this from someone or did you specify what your grind was to be?
Are you planning on hitting this with Nitrous?
Looks like a nice stick for a N2O car.
 

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Discussion Starter #3 (Edited)
I'm not really satisfied with the engine performance and looking forward to change something. The camshaft was installed when I took over the engine.

I want to stay on pump gas (102 octane). No N2O!
 

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I think I'd lean more towards like
Lift: .640''/.645''
Duration: 308°/316°
RPM Range: 4400-7800
What do you have on there for intake and carb?
 

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Are you planning on hitting this with Nitrous?
Looks like a nice stick for a N2O car.
I was going to say a N20 cam or blower cam. If not running either one then that cam is probably holding back on some power for all motor.
 

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I'm thinkin you might need an 800-850 cfm and a single plane intake.
How much port work has been done on the cylinder heads? Roof, bowl etc?
 

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Discussion Starter #7 (Edited)
Thanks for your feedback.

I run a 1050 Race Demon RS with a Dart single plane intake.

The heads are heavy race ported.

I drive it on the street from time to time and want to stay on 102 octane pump gas. No charger and no N2O.

My feeling is, that I have a bootleneck with the heads and the cam !?!?!?

She is running 10.39 on 1/4 / 1.47 60ft / 133mph and 6.6 on 1/8
 

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1.47 60ft? carb too big......lost velocity thusly leading your thinking to the cylinder head. Even in calculating your heads at 100% VE, you only are going to use 941 cfm @ 8000 rpm.
CID x RPM x VE / 3456=CFM consumption at stated RPM figure.
We run a 3400# firebird, 410 SBC, 750 HP carb, Brodix -12 heads, Victor tall intake, 2.250" Lemon headers on 100 av fuel and 10.5:1 CR. Cam is 585/258, trans brake and 3500 stall convertor. 1.118 60FT 9.89 @ 140.
 

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Discussion Starter #9
1.47 60ft? carb too big......lost velocity thusly leading your thinking to the cylinder head. Even in calculating your heads at 100% VE, you only are going to use 941 cfm @ 8000 rpm.
CID x RPM x VE / 3456=CFM consumption at stated RPM figure.
We run a 3400# firebird, 410 SBC, 750 HP carb, Brodix -12 heads, Victor tall intake, 2.250" Lemon headers on 100 av fuel and 10.5:1 CR. Cam is 585/258, trans brake and 3500 stall convertor. 1.118 60FT 9.89 @ 140.
yes, but I've tried the other Race Demon options 825 and 975 with absolutely no difference in 60ft and ET.
 

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The cam shaft is wrong for a None NOS application.

The 112 lobe center is the basic problem , the rest of the posted hubbablue is useless. regardless of the rest of of the cam spec in your application it is useless.


Carb swaps and other variables with still result in sub par results and a patch for the root problem.

You can PM or e-mail and we can discuss your options and goals.

IMHO
AL
 

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Discussion Starter #12 (Edited)
thanks for all the responses.

I changed my mind and thinking about a complete new setup for next year. this will contains an E85 conversion, 14# pro-topline alu heads, big cam and higher CR.

....and you are right, Big Al. Compcams has confirmed, that my actual cam has been made for a pro-charger or N20 setup. The camshaft was installed when I took over the engine and was not the right choice for my setup.

greets
carl
 

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....and you are right, Big Al. Compcams has confirmed, that my actual cam has been made for a pro-charger or N20 setup. The camshaft was installed when I took over the engine and was not the right choice for my setup.

greets
carl
The same thing 65SS and I both said up on top. 112 and 114 are for NOS and Blower applications.
 

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Discussion Starter #14
The same thing 65SS and I both said up on top. 112 and 114 are for NOS and Blower applications.
yap, sorry tha I didn't mentioned your input.

thank you very much - bummer that I didn't check the cam specs before against my setup!

greets
carl
 

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how high do you want to wind it ?? the cam will work with the 14 degree heads i'd say unless you really want to wind it ,,, few months back saw a 14 degree 434 , almost identical cam on a 108 ( 268 @ .050 int ) , 15.2-1 , 14 degree pro toplines alum, 950 hp , 1.440 venturi ,, it went 784 hp and 670 ft lbs all before 7000 ,,, your cam on a 112 should pull a lil longer ,

116 gas
 

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All of you missed this one!:D

Simple: Add the FAST GAS (No2)!!!!!!!!!!:yes: for the track and enjoy the benefits of less over lap for street driving.

Wrong cam or not, 1.47 short time, other issues besides a mis-matched cam.

-Scott
 
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