how much hp does heads add?
Thread Starter
Racer
Joined: Jan 2005
Posts: 433
Likes: 0
From: Northridge southern california
how much hp does heads add?
how much hp do
1. heads
2. cam
3. intake
4. headers
5. fast.
add? seperatly?
how much are 4.10 gears?
do they just swap out the ring and pinion?
1. heads
2. cam
3. intake
4. headers
5. fast.
add? seperatly?
how much are 4.10 gears?
do they just swap out the ring and pinion?
Race Director
Joined: Oct 2004
Posts: 10,089
Likes: 14
Originally Posted by c6 corvette Z51
how much hp do
1. heads
2. cam
3. intake
4. headers
5. fast.
add? seperatly?
1. heads
2. cam
3. intake
4. headers
5. fast.
add? seperatly?
how much are 4.10 gears?
do they just swap out the ring and pinion?
do they just swap out the ring and pinion?
And while the diff is torn apart, it really makes sense to go ahead and beef it up so it can live with more torque. When you get through doing all that, you're close to the cost of a new performance rear from the likes of DTE. So IMHO, this is one of those times when you just open your wallet and buy a new diff from the pros and bolt it in.
Thread Starter
Racer
Joined: Jan 2005
Posts: 433
Likes: 0
From: Northridge southern california
Originally Posted by shopdog
Separately, not all that much. What matters for power is overall flow. That requires all of those various components to work together as a system. As a properly engineered system, those changes can make a huge power difference. But just changing one simply moves the flow bottleneck to a different part of the system, and doesn't give you a huge power increase.
You can get a set of gears for as low as about $300-$400, but installation can easily double that. It takes someone who really knows what he's doing to change out rear gears without creating problems. (It isn't really a difficult job, but there is little room for error. It must be done just right, or you'll have gear whine and premature failure down the road.)
And while the diff is torn apart, it really makes sense to go ahead and beef it up so it can live with more torque. When you get through doing all that, you're close to the cost of a new performance rear from the likes of DTE. So IMHO, this is one of those times when you just open your wallet and buy a new diff from the pros and bolt it in.
You can get a set of gears for as low as about $300-$400, but installation can easily double that. It takes someone who really knows what he's doing to change out rear gears without creating problems. (It isn't really a difficult job, but there is little room for error. It must be done just right, or you'll have gear whine and premature failure down the road.)
And while the diff is torn apart, it really makes sense to go ahead and beef it up so it can live with more torque. When you get through doing all that, you're close to the cost of a new performance rear from the likes of DTE. So IMHO, this is one of those times when you just open your wallet and buy a new diff from the pros and bolt it in.
how much is one from dte?
how much faster will i be in teh 1/4? .2?
Thread Starter
Racer
Joined: Jan 2005
Posts: 433
Likes: 0
From: Northridge southern california
Originally Posted by Brabus2
A good set of heads w/ headers should net you 30-35rwhp, a bit more with tuning.
that is weird.
cartek has a kit that claims 140rwhp, last time i checked.
wow, they must pack a lot of stuff in that kit.
Instructor
Joined: Oct 2005
Posts: 139
Likes: 0
From: Murfreesboro Tn
I think ShopDog said it best.
When you're talking about engine performance, you have to look at how the mods allow the engine to breathe. After all is said and done, this is what will matter for your mods.
Headers allow better flow from the cylinders.
Cams play various roles that deal mainly with lift, duration and overlap. These together help the engine breathe by scavenging the cylinder and pulling in more air (really a function of overlap). Agressive cams can drop your low end torque while increasing your high end torque.
There is no magic bullet, every mod needs to mesh with the other mods and this is where tuning comes into play. I'm not sure it's possible to say how much gain is there without actually doing it. The mods don't just add gain linearly (imho). You can get a ballpark but not by purely adding the professed gains of each mod.
I'm not as smart at this stuff as people like Shopdog so I would suggest reading their previous posts and trying to get a baseline understanding.
Hope this wasn't a worthless response for you,
Jz
When you're talking about engine performance, you have to look at how the mods allow the engine to breathe. After all is said and done, this is what will matter for your mods.
Headers allow better flow from the cylinders.
Cams play various roles that deal mainly with lift, duration and overlap. These together help the engine breathe by scavenging the cylinder and pulling in more air (really a function of overlap). Agressive cams can drop your low end torque while increasing your high end torque.
There is no magic bullet, every mod needs to mesh with the other mods and this is where tuning comes into play. I'm not sure it's possible to say how much gain is there without actually doing it. The mods don't just add gain linearly (imho). You can get a ballpark but not by purely adding the professed gains of each mod.
I'm not as smart at this stuff as people like Shopdog so I would suggest reading their previous posts and trying to get a baseline understanding.
Hope this wasn't a worthless response for you,
Jz
Le Mans Master
Joined: Nov 2004
Posts: 6,566
Likes: 2
From: Goleta CA
Cruise-In VIII Veteran
Originally Posted by c6 corvette Z51
how much is one from dte?
http://www.dynotech-eng.com/dte_c6_diff.htm
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Safety Car
Joined: Apr 2005
Posts: 4,769
Likes: 0
From: SFV CA
Originally Posted by c6 corvette Z51
really , thats it.
that is weird.
cartek has a kit that claims 140rwhp, last time i checked.
wow, they must pack a lot of stuff in that kit.
that is weird.
cartek has a kit that claims 140rwhp, last time i checked.
wow, they must pack a lot of stuff in that kit.
Livernois Motorsport added their stage 1 H/C and a Corsa exhaust to an unmodified C6; baseline numbers were 330rwhp/332rwtq, with the upgrades it pulled 409rwhp/374rwtq (that's a 79rwhp/42rwtq gain).
Rev Xtreme went with a more wild package; baseline numbers were 311rwhp/308rwtq, with the added ETP heads/Comp cams, Halltech, FAST intake, ASP underdrive pulley, 160 stat, Corsa exhaust and LGs LT - the number jumed to 443rwhp/414rwtq (132rwhp/106rwtq gain).
Both results include the proper dyno tuning needed.
Melting Slicks
Joined: Nov 2004
Posts: 2,176
Likes: 0
From: Orange, CT
419 Rwhp
I have dynatech headers and xpipe w/ cats, back to a corsa sport exhaust + Halltech intake + Comp cam (228/232, 588/594, 114lsa) + tune. Sadly, I did not get dynoed until right before the cam went in. With my mods, excluding the cam, I dynoed at 376 RWHP/ 370 TQ. After the addition of only the cam and tuning, I gained another 43 RWHP and about 15 TQ. 
All I can say is decide now whether you want to ultimately stay N/A, or go forced-induction in the future before selecting your heads and cam specs. My cam is probably the max you would want to go with a supercharger if you want to keep it a street car. My blower kit should be arriving shortly...
All I can say is decide now whether you want to ultimately stay N/A, or go forced-induction in the future before selecting your heads and cam specs. My cam is probably the max you would want to go with a supercharger if you want to keep it a street car. My blower kit should be arriving shortly...
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Most of the benefits in swapping heads before a cam wouldnt be realized but there is a strong a difference from heads as there are from headers. I swapped my heads before the cam because there was no tuning available for the C6 at the time. The heads will give a power increase just from the compression increase. I ran the ported heads with 11.5:1 on the stock cam and it was pulling harder than when I swapped headers on. You would get 20 without a cam and up to 40rwhp with a moderate cam.
