C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Afr heads

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Old Dec 8, 2002 | 08:07 PM
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Default Afr heads

How much more power will I see with the afr 190 over the stock ZZ4 D-ports? Non ported
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Old Dec 8, 2002 | 08:10 PM
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Default

Bolted onto what? :confused:
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Old Dec 8, 2002 | 08:10 PM
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Default Re: (scorp508)

350
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Old Dec 8, 2002 | 08:30 PM
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Default Basically a ralph motor

Rich,

Maybe ralph will chime in. You'll pretty much have his,and bob sebrowski's motor(s) if you do that. You have His e-mail. Don't hesitate to shoot Him one on this question. Ralph's a great guy,and will lend you a hand if you need it.

You're definitely a car guy...:) You just put headers and a new chip in,and you're ready to tear it apart once again! :thumbs:
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Old Dec 8, 2002 | 09:28 PM
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Default Re: Basically a ralph motor (JD 90 383)

Correct me if I am wrong but I think the ZZ-4 heads are the exact same as the L98 D-port aluminum heads.

What does your car put out right now. We could take more of a calculated guess if we know what you have as a base number. YOu are probably at 300rwhp with the 219 cam right now and I say with AFRs you add 30rwhp.
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Old Dec 8, 2002 | 10:10 PM
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Default Re: Afr heads (corvette0096)

(cc) Port Vol intake exhaust (cfm)
D-ports 163/58 186 152
AFRs 190/64 236 163

Just look at the intake cfm comparison, you should get 25-30rwhp. I'm assuming the zz4 d-ports are exactly the same as the corvette d-ports though.
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