Best Mods for adding Horsepower
Safety Car
Joined: Jan 2006
Posts: 4,598
Likes: 78
From: Miami FL
2020 C6 of the Year Finalist - Unmodified
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16,'17,'18-'19-'20-'21-'22
1. Camshaft. This is THE MAJOR determinant of engine performance.
2. Heads. Better breathing.
If you do 1. and 2., then 3. is mandatory:
3. Excellent tune by a skilled tuner.
2. Heads. Better breathing.
If you do 1. and 2., then 3. is mandatory:
3. Excellent tune by a skilled tuner.
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Instructor
Joined: Jan 2006
Posts: 217
Likes: 0
From: Folsom CA
Mods
Originally Posted by furniss5
What are the top 3 best mods for adding horsepower without adding superchargers/turbo/prochargers ?
Starting with the factory Car.
Thanks
Charlie
Starting with the factory Car.
Thanks
Charlie
Le Mans Master
Joined: Apr 2001
Posts: 8,133
Likes: 144
From: Ex-SF Bay Area; now happily Denver area
Originally Posted by blkvc6
I asked Dick Gulstrand ( Legendary Corvette Racer) the exact same question at a Corvette function in South Lake Tahoe a few months back. His response was #1) Exhaust w/ X-pipe ( i went with Borla Stinger ) #2) Air induction( He recommended Black Wing) #3) As 1320 responded in this thread--Rear end gearing. I have been told by track people that the rear end change has the most impact as far as noticable feel off the line and track. If Gulstrand recommends it then it's sure as hell good enough for me!! i've got two to go and the rear gear change is next ( hopefully in the next two weeks). HAPPY MOTORING, Steve
Instructor
Joined: Jan 2006
Posts: 217
Likes: 0
From: Folsom CA
mods
Originally Posted by FunDriver
I effectively did all three on my C5 and got great results. I checked your profile and I guess that you have the base coupe with the 3.42 rear end. If this is the case, you will be amazed with the gear change. However, if you have an MZ6 transmission on the Z51 option, then your transmission is giving you apprximately the same results as a stock coupe with 3.90 gears. I wouldn't recommend replacing the 3.42 gears on the Z51. Overall, I liked my 4.10's better than these 3.90's but I'm not going to make any changes for just that difference. And remember, there's a warranty issue as well.
Race Director
Joined: Oct 2004
Posts: 10,089
Likes: 14
Originally Posted by furniss5
What are the top 3 best mods for adding horsepower without adding superchargers/turbo/prochargers ?
Starting with the factory Car.
Thanks
Charlie
Starting with the factory Car.
Thanks
Charlie
2)Dual stage Nitrous
3)Progressive Nitrous
true...
Former Vendor
Joined: Mar 2003
Posts: 18,666
Likes: 395
From: Tampa FL
St. Jude Donor '07-'08-'09-'10-'11-'12'-'13-'14-'15
Originally Posted by blkvc6
I asked Dick Gulstrand ( Legendary Corvette Racer) the exact same question at a Corvette function in South Lake Tahoe a few months back. His response was #1) Exhaust w/ X-pipe ( i went with Borla Stinger ) #2) Air induction( He recommended Black Wing) #3) As 1320 responded in this thread--Rear end gearing. I have been told by track people that the rear end change has the most impact as far as noticable feel off the line and track. If Gulstrand recommends it then it's sure as hell good enough for me!! i've got two to go and the rear gear change is next ( hopefully in the next two weeks). HAPPY MOTORING, Steve
Definitely not questioning Mr. Gulstrand's opinion however the catback will get you about 3-5 and the blackwing is one of the lower gaining air intakes. The rear end will not get you any more HP/TQ it will just get you out of the hole quicker. In fact it may rob top end if you go with too low of gear. Of course if you are happy then that is all that matters. The bright side is that with those mods you dont even need a tune.
Instructor
Joined: Jan 2006
Posts: 217
Likes: 0
From: Folsom CA
Mods
Originally Posted by ccajun4real
Definitely not questioning Mr. Gulstrand's opinion however the catback will get you about 3-5 and the blackwing is one of the lower gaining air intakes. The rear end will not get you any more HP/TQ it will just get you out of the hole quicker. In fact it may rob top end if you go with too low of gear. Of course if you are happy then that is all that matters. The bright side is that with those mods you dont even need a tune.