Inexespensive HP
Safety Car
Joined: Dec 2006
Posts: 4,290
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From: St Marys GA
It won't be easy, especially for not much $$$. Your intake will definitely not support that kind of HP, so you'll probably be looking at intake, heads, and cam with a full exhaust including long-tube headers. Not sure if that will hit 350hp or not. Mainly just bumping ... someone intelligent will chime in soon 
Instructor
Joined: May 2008
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From: Midland Texas
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From: So. Cal.
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Tech Contributor
Joined: Aug 2006
Posts: 9,933
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From: Peoria Arizona.. Resident Gold Cylon
100 Hp? Cheap?
Well you might pickup about 30-40 hp with a set of long tube headers and hi flowing cats, And an open air filter mod.
Beyond that we are talking top end work, porting and polishing the intake, Head work etc. Hot cam etc. But that work isnt cheap.
If I may suggest these appears to be a pretty good deal for the top end
http://forums.corvetteforum.com/c4-p...e-for-l98.html
This plus the headers, High flowing cats and open air element will bring you to about the 75Hp range minimum. GC
Well you might pickup about 30-40 hp with a set of long tube headers and hi flowing cats, And an open air filter mod.
Beyond that we are talking top end work, porting and polishing the intake, Head work etc. Hot cam etc. But that work isnt cheap.
If I may suggest these appears to be a pretty good deal for the top end
http://forums.corvetteforum.com/c4-p...e-for-l98.html
This plus the headers, High flowing cats and open air element will bring you to about the 75Hp range minimum. GC
Last edited by Goldcylon; Jan 6, 2009 at 11:37 PM.
NOS is the way
Melting Slicks
Joined: Apr 2007
Posts: 2,616
Likes: 111
what do you define as "cheap?" $200 won't get you there if that is what you mean unless you go NOS....well north of that otherwise...the TPI set up is a torque happy intake; does not flow enough at higher RPM's for high hp numbers...
Last edited by 856SPEED; Jan 7, 2009 at 12:07 AM.
Le Mans Master
Joined: Apr 2005
Posts: 6,413
Likes: 9
From: The Old Dominion
What you could do is track down a 350hp car somewhere. Then wait nearby in your 250hp one. When the owner is about to get in his 350hp machine, run him down. Then grab the keys off his corpse and you are set.
Otherwise, GM didn't leave 100hp on the table that can be cheaply added. You might want to define a budget, and then see what is the best way to spend that.
Otherwise, GM didn't leave 100hp on the table that can be cheaply added. You might want to define a budget, and then see what is the best way to spend that.
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
100HP won't happen for short money unless you consider a couple of grand short money. If you do your own wrenching that would give you exhaust, cam, and heads if you shop wisely.
The problem with NOS is that you put it in and never use it because you are not racing. How often do we really run at wide open throttle for more than a few seconds on the street.
My $.02
Save your $$$ for a cool sounding set of mufflers and drive it. Later on if it is an auto go up to mid 3s in the rear. That should givr some nice SOTP gain. I don't think a converter on a stock motor is a big deal but there are those here that swear by it.
The problem with NOS is that you put it in and never use it because you are not racing. How often do we really run at wide open throttle for more than a few seconds on the street.
My $.02
Save your $$$ for a cool sounding set of mufflers and drive it. Later on if it is an auto go up to mid 3s in the rear. That should givr some nice SOTP gain. I don't think a converter on a stock motor is a big deal but there are those here that swear by it.
Burning Brakes
Joined: May 2008
Posts: 1,057
Likes: 2
From: Ohio
It sucks, but those are the best options. I have an 87 and I'm in your shoes. The mileage on your car would determine what you can do to it. If it's higher miles, say, above 80k, I'd look at refreshing the bottom end before adding performance goodies. I'm no expert, but as far as I can tell, good starting points for an L98 are:
Headers
Catback
Intake
Cam
Heads
Shift kit, high stall converter (for an auto).
I'm not sure how much all that would cost, but it's in the thousands.
Team Owner
Joined: Sep 2001
Posts: 62,160
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From: Athens AL
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Click my name and have a look at my website for some ideas, but it won't be cheap if you want 350hp at the crank.
