Whats it take to get a L98 to run with a stock LS?
Thread Starter
Joined: Jul 2010
Posts: 833
Likes: 17
From: The Jersey Shore
Car: 1991 Firebird Convertible
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 3.45 9 Bolt Posi
Whats it take to get a L98 to run with a stock LS?
What does it take to get a L98 to run with a stock LS 4th gen F body?
Joined: Oct 2001
Posts: 12,221
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: Whats it take to get a L98 to run with a stock LS?

Sorry couldn't help it. Haha I guess it depends on what car you start with.
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Joined: Aug 2006
Posts: 311
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From: Stafford, Connecticut
Car: 87 Iroc
Engine: modified 350
Transmission: high performance built 700R4
Axle/Gears: Strange S60 3:73
Re: Whats it take to get a L98 to run with a stock LS?
The usual suspects heads, cam ,intake ,exhaust and tune.
Thread Starter
Joined: Jul 2010
Posts: 833
Likes: 17
From: The Jersey Shore
Car: 1991 Firebird Convertible
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: 3.45 9 Bolt Posi
Re: Whats it take to get a L98 to run with a stock LS?
think it can be done with stock heads?
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iTrader: (1)
Joined: Jul 2005
Posts: 141
Likes: 0
From: Lowell, MI
Car: 1989 Camaro IROC-Z Convt.
Engine: 355
Transmission: T5
Axle/Gears: Zexel Torsen 3.42
Re: Whats it take to get a L98 to run with a stock LS?
Very modified stock heads, yes. Stock LS1 heads flow ~223/175 cfm, stock iron L98 flow ~190/110 cfm.
Member
Joined: Oct 2007
Posts: 496
Likes: 0
From: Winnipeg
Car: 91 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: 3:73
Re: Whats it take to get a L98 to run with a stock LS?
i would say full bolt-on mods, plus at least 3:42... should briing it to 13seconds in the 1/4. plus fingers crossed
Re: Whats it take to get a L98 to run with a stock LS?
on the street my l98 with ported base runners plenum, with ud pulleys and 327 gear is neck and neck with buddys 98 z28 bone stock until about 75 80 than he starts to pull but it is fun stop light to stop light
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