Add about 50 hp
Team Owner
Joined: Sep 2001
Posts: 62,140
Likes: 1,728
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
50chp, headers and exhaust, 1.6RR, should be there.
Anything more requires a cam change.
Although you could get the 'feel' of having the extra power by going to a lower gear ratio. That depends on your transmission type as well, which you havent told us.
Anything more requires a cam change.
Although you could get the 'feel' of having the extra power by going to a lower gear ratio. That depends on your transmission type as well, which you havent told us.
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Exhaust on a LT1 wont give you anything but a different sound. LT Headers and 1.6 or even 1.7 rockers and springs will help. Other then a little from a different tune and possibably an electric water pump, there is not much left to do to the LT1 with bolt ons. Even with all of these I dont believe you will see 50hp. As someone else stated, the real power to be had is in porting the heads, a different cam, and headers.
But as a side note, what are your plans with the car. If it is a automatic with 2.59 gears, a set of 3.54 or 3.73 will really wake it up and put the power it is making now in a more usable area. Then consider a quality, higher stall converter, something in the area of 2600-3000.
When mine was bone stock, it ran a 13.17 at 105.xx mph with 3.54 gears. The addition of a 3000 stall converter gave me a 12.91 at 105.xx and this was on mich. street tires.
Team Owner
Joined: Sep 2001
Posts: 62,140
Likes: 1,728
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Exhaust on a LT1 wont give you anything but a different sound. LT Headers and 1.6 or even 1.7 rockers and springs will help. Other then a little from a different tune and possibably an electric water pump, there is not much left to do to the LT1 with bolt ons. Even with all of these I dont believe you will see 50hp. As someone else stated, the real power to be had is in porting the heads, a different cam, and headers.
Number I gave is 50chp, which if you got 10-15rw from headers, and 10-15rw from RR, then you should have.
Le Mans Master
Joined: Oct 2004
Posts: 7,706
Likes: 485
From: Everett WA
C4 of Year Finalist (appearance mods) 2019
I gained 40RWHP on a mustang dyno on my 95A4 with SW LT headers and the LT4 hot cam Kit & a mild tune.
With my stock 3.07 rear, a Yank 3000 really sort of "woke it up"
As the others have said with an LT1 a different exhaust system isn't really going to do much for you because the LT1 exhaust is not restrictive at these HP levels.
With my stock 3.07 rear, a Yank 3000 really sort of "woke it up"
As the others have said with an LT1 a different exhaust system isn't really going to do much for you because the LT1 exhaust is not restrictive at these HP levels.
Thread Starter
Melting Slicks
Joined: Oct 2007
Posts: 2,310
Likes: 9
From: KB7TIF Ville NV
50 Hp
Exhaust on a LT1 wont give you anything but a different sound. LT Headers and 1.6 or even 1.7 rockers and springs will help. Other then a little from a different tune and possibably an electric water pump, there is not much left to do to the LT1 with bolt ons. Even with all of these I dont believe you will see 50hp. As someone else stated, the real power to be had is in porting the heads, a different cam, and headers.
But as a side note, what are your plans with the car. If it is a automatic with 2.59 gears, a set of 3.54 or 3.73 will really wake it up and put the power it is making now in a more usable area. Then consider a quality, higher stall converter, something in the area of 2600-3000.
When mine was bone stock, it ran a 13.17 at 105.xx mph with 3.54 gears. The addition of a 3000 stall converter gave me a 12.91 at 105.xx and this was on mich. street tires.
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Race Director
Joined: Jun 2001
Posts: 10,956
Likes: 680
From: Marlboro country MA
I don't have dyno numbers, but a whole lot of track results. My stock 92 A4 LT1 with 2.59 gears ran a best of 13.84. By putting in 3.33 gears, a HotCam kit including 1.6RR's, LT headers, a 2600 stall TC, and electric water pump, I got a 12.50 this season. Intake and heads remain stock.
Melting Slicks
Joined: Feb 2006
Posts: 2,240
Likes: 0
From: Cleveland OHIO
50chp ??
longtube headers
X pipe
1.6 roller rockers
electric waterpump
cut lid
good tune
I DO NOT RECOMMEND you do the above bolt on mess though. If it were mine and I wanted 50 more horses I would get the heads ported and run a small cam and a tune. You'll pick up the power without making it louder, or idle rough. When you sell it you can just keep your mouth shut and nobody will know.
longtube headers
X pipe
1.6 roller rockers
electric waterpump
cut lid
good tune
I DO NOT RECOMMEND you do the above bolt on mess though. If it were mine and I wanted 50 more horses I would get the heads ported and run a small cam and a tune. You'll pick up the power without making it louder, or idle rough. When you sell it you can just keep your mouth shut and nobody will know.
