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

Horsepower for a L98 engine

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Old Mar 31, 2003 | 04:48 PM
  #1  
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From: FREJUS FRANCE
Default Horsepower for a L98 engine

what is the best way to add 50 HP to a 1989 L98 engine
thans for your experience .
Old Mar 31, 2003 | 04:53 PM
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Default Re: Horsepower for a L98 engine (michelc4)

N2O :cool:
Old Mar 31, 2003 | 04:53 PM
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Default Re: Horsepower for a L98 engine (michelc4)

Ported intake, exhaust.
Old Mar 31, 2003 | 05:05 PM
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Default Re: Horsepower for a L98 engine (michelc4)

Please define "best".

Check my site for some mods that have done the job; I'm sending you mail with a recipe for TPI HP, all with way up to +100hp gain.
Old Mar 31, 2003 | 05:08 PM
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Default Re: Horsepower for a L98 engine (michelc4)

Depends on how much you want to spend.

Mini Ram-$1250=95-125hp (according to TPIS)
Cam-$150-$400=Roughly 40hp
Heads-$1300-$2000=Roughly 40hp
Headers-$300-$750=Roughly 20hp
Computer Prom-$190+ = Realisticaly 10hp (on stock eng.)
K+N filter- $55= 10-15hp
Cat Back-$600+ Roughly 15-20hp

Really it is all on how much you want to spend. You could get a chip, headers, and a K+N filter and you would have about 45 extra HP. I am sure somebody will come along and dissagree with my figuers but, they are just that, figures, meant to be a guide line. But, the three mods. I suggested would get you there for right around $1000 if not under. Depends on what headers and who makes the chip. My .02 cents worth, go with the TPIS headers. They are expensive but are the easiest to install and, come with the "Y" pipe.
Old Mar 31, 2003 | 10:34 PM
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Default Re: Horsepower for a L98 engine (65Z01)

65ZO1 could you send that my way also? It'd be much appreciated, thanks.
Dcvertigo@aol.com
Dave
Old Apr 1, 2003 | 10:57 AM
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Default Re: Horsepower for a L98 engine (65Z01)

Please send mail on HP improvement to me also. Thanks
Jeff
jhughes@hsonline.net
90 vert 6spd
Old Apr 1, 2003 | 11:15 AM
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Default Re: Horsepower for a L98 engine (jhughes2101)

Jeff & Dave consider it done; hope you find the info a useful guide.

The copy of the article came from another Forum member years ago so I've been passing along the data since.
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Old Apr 1, 2003 | 12:02 PM
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Default Re: Horsepower for a L98 engine (65Z01)

65Z01: Could you please send that HP info my way also. Thanks Billy.
Old Apr 1, 2003 | 12:13 PM
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Default Re: Horsepower for a L98 engine (65Z01)

Got it, thanks
Old Apr 1, 2003 | 01:04 PM
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Default Re: Horsepower for a L98 engine (jhughes2101)

If you get time could you send it to me also ?

Thks,

Robin
:cheers:
Old Apr 1, 2003 | 01:12 PM
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Default Re: Horsepower for a L98 engine (zrracer)

Billy D & Robin, there you go.
Old Apr 1, 2003 | 02:52 PM
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Default Re: Horsepower for a L98 engine (65Z01)

May I please get a copy of your L98 recipe sir?

Thanks
Doug
Old Apr 1, 2003 | 03:16 PM
  #14  
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Default Re: Horsepower for a L98 engine (Dougs 90)

You got it Doug.
Old Apr 1, 2003 | 04:17 PM
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Default Re: Horsepower for a L98 engine (65Z01)

Can someone please email me the L98 recipe?
Old Apr 1, 2003 | 04:30 PM
  #16  
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Default Re: Horsepower for a L98 engine (Pete89)

Hey, I'd like a copy of these L98 tips too.

Thanks!
Old Apr 1, 2003 | 04:48 PM
  #17  
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Default Re: Horsepower for a L98 engine (TheCorvetteKid)

Me too, please.
Thanks.:cheers:
Rick

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Old Apr 1, 2003 | 04:55 PM
  #18  
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Default Re: Horsepower for a L98 engine (1STVETTE90)

Pete, CK, Rick it's in the mail.
Old Apr 1, 2003 | 04:59 PM
  #19  
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Default Re: Horsepower for a L98 engine (65Z01)

New here, first post :-)

Looking to get a vette as soon as i can sell my Talon (Turbo, All Wheel Drive, kinda quick ;-))..

Could i get that recipe? thanks a load
Old Apr 1, 2003 | 04:59 PM
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Default Re: Horsepower for a L98 engine (Pete89)

run the bottle!



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