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

How much gain? Need some input.

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Old Mar 13, 2002 | 10:54 PM
  #1  
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Default How much gain? Need some input.

Basic setup, 350 Afr 190 58cc Ling 219 S/R(stock base,heavily ported) 1 5/8"
Edelbrocks 48mm tb and 1.5 rockers. How much realistic gain will I see to go
to a Accel base, 58mm tb and 1.6 rockers? Is that base that much better than
a heavily ported stock base? Help please.
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Old Mar 13, 2002 | 11:19 PM
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Default Re: How much gain? Need some input. (Kwik88)

I think that 48mm is going to rain on your HP party. The throttle body and the 1.6's will make a difference. I can't say for sure cause I'm a MR kinda guy.

KM
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Old Mar 13, 2002 | 11:28 PM
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Default Re: How much gain? Need some input. (88-406)

Actually something did rain on it. I had it dyno'd yesterday and the numbers fell short of what I expected. 272hp @ 5200 and 306tq @ 4300. Air/fuel was pretty good between 12.3 and 12.6 throughout full power. Trying to see what the major culprits are.
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Old Mar 13, 2002 | 11:31 PM
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Default Re: How much gain? Need some input. (Kwik88)

you really need to go to the bigger base and bigger TB with the SR, along with the 1.6rr, you should be well over 300
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Old Mar 13, 2002 | 11:34 PM
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Default Re: How much gain? Need some input. (vader86)

Is that Accel piece that much bigger and better?
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Old Mar 14, 2002 | 12:08 AM
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Default Re: How much gain? Need some input. (Kwik88)

Is that Accel piece that much bigger and better?
Over stock, hell yes
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Old Mar 14, 2002 | 12:14 AM
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Default Re: How much gain? Need some input. (vader86)

Is that Accel piece that much bigger and better?

Over stock, hell yes
and then some
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Old Mar 14, 2002 | 12:28 AM
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Default Re: How much gain? Need some input. (Kwik88)

In my research and testing, the stock lower intake on the TPI system is the weakest link. The runners and plenum are ok, but the lower intake is very restrictive.

I plan on replacing my lower intake very soon and I will provide track results.

Vic
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