Need More power ls2
Thread Starter
Intermediate
Joined: Mar 2011
Posts: 49
Likes: 2
From: latham ny
Need More power ls2
I have a 05 z-51 6 speed my mods include a corsa exhaust ,vararam cai,lg street series headers,x-pipe with high flow cats,160 thermostat,and tune.im at 380hp but im looking to hit the 400hp mark.is there any simple mods that can be done to reach that point,not interested in a cam swap though.what do you guys think.
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
Ported stock will pick up pretty decent peak power but will not make nearly the same power/torque under the curve as either FAST intake.
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
I purchased the 102 as it is a direct bolt-on and requires no modifications to switch out.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
Le Mans Master
Joined: Jan 2002
Posts: 5,891
Likes: 1,198
From: Ft. Myers FL
Neumonic2002 I purchased the 102 as it is a direct bolt-on and requires no modifications to switch out.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
Anyone have a 92 or 102 since they're moving on up to a LS3???
Melting Slicks
Joined: Oct 2010
Posts: 2,314
Likes: 4
From: Cape May, NJ; Guntersville, AL; Orange Beach, AL
Save for a cam swap or go FI. You would be paying a lot for just a few HP. You could always just port your TB and intake for less than $500 and that would probably get you there with better throttle response.
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Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Ported FAST
Simplest solution, ported & modded to fit w/o cutting firewall in garage, simple stuff, especially now the 102 is direct bolt on. I ported stocker waste of time, effort, & money, porting TB usually reserved for professionals. What people are not pointing out is the mid range hp/tq gains are far more significant in performance & in # in 30s than a peak 20-25 at 6500.
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
Just wait for a good deal. I got my ported FAST for 600 bucks (or maybe 650, I dont recall...one or the other). Picked up a little over 20 peak and 30 in the midrange.
You must've never driven a car that went from stock to a ported FAST. The midrange power is insane that you pick up.
The cost:power ratio for a supercharger and ported FAST is pretty similar anyway (Assuming 25rwhp for the ported FAST @ 1000 bucks and 150rwhp for the supercharger @ 6000 bucks)...both are about 1rwhp for 40 bucks. But if you pay to have the supercharger installed it becomes more expensive quickly.
Exactly
The cost:power ratio for a supercharger and ported FAST is pretty similar anyway (Assuming 25rwhp for the ported FAST @ 1000 bucks and 150rwhp for the supercharger @ 6000 bucks)...both are about 1rwhp for 40 bucks. But if you pay to have the supercharger installed it becomes more expensive quickly.
Simplest solution, ported & modded to fit w/o cutting firewall in garage, simple stuff, especially now the 102 is direct bolt on. I ported stocker waste of time, effort, & money, porting TB usually reserved for professionals. What people are not pointing out is the mid range hp/tq gains are far more significant in performance & in # in 30s than a peak 20-25 at 6500.
Exactly
Former Vendor
Joined: Nov 2010
Posts: 2,210
Likes: 6
From: Denver CO
Ported intake manifold and throttle body
Good advice from members on porting your intake manifold and throttle body. We're offering a porting special through 4/18 that you may be interested in. We can port your stock LS2 intake manifold or the FAST manifold if you go that direction. Porting the throttle body doesn't add much for horsepower, but you will like the crisper throttle response.
Here is the link to our porting special: http://forums.corvetteforum.com/c6-t...y-porting.html
Here is the link to our porting special: http://forums.corvetteforum.com/c6-t...y-porting.html
Tolero Apto Victum
Joined: Jul 2007
Posts: 9,669
Likes: 37
From: Woodlands TX
Good advice from members on porting your intake manifold and throttle body. We're offering a porting special through 4/18 that you may be interested in. We can port your stock LS2 intake manifold or the FAST manifold if you go that direction. Porting the throttle body doesn't add much for horsepower, but you will like the crisper throttle response.
Here is the link to our porting special: http://forums.corvetteforum.com/c6-t...y-porting.html
Here is the link to our porting special: http://forums.corvetteforum.com/c6-t...y-porting.html
Ported throttle body, ATI under drive pulley, & FAST precision flow fuel injectors.
Instructor
Joined: Oct 2010
Posts: 100
Likes: 0
From: Michigan
FWIW, I decided to go with porting the stock IM and TB vs. the FAST 102. I've yet to hit the dyno for final #'s but I will say the appearnce of the porting job that Bob from Peak did is absolutely top notch! It just looks right...For the $$ it's tough to beat, just my .02
Drifting
Joined: Mar 2005
Posts: 1,424
Likes: 21
From: Placitas New Mexico
FWIW, I decided to go with porting the stock IM and TB vs. the FAST 102. I've yet to hit the dyno for final #'s but I will say the appearnce of the porting job that Bob from Peak did is absolutely top notch! It just looks right...For the $$ it's tough to beat, just my .02
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
Post up your results when you get the numbers from your ported LS2 IM and TB.
The LS2 IM will not perform as well as a ported Fast but if someone isn't willing to spend the extra money at least the gains should be on par for the dollars spent.
The LS2 IM will not perform as well as a ported Fast but if someone isn't willing to spend the extra money at least the gains should be on par for the dollars spent.
VETERAN
Joined: Aug 2005
Posts: 512
Likes: 114
From: Owings Maryland
improved power vs. dollars out the door?
I am in the same similar place as "05z51vette": don't mean to steal your post but I have the same questions too.
I only have done two things to my car as far as pwr mods:
Borla Stinger exhaust
(Headers) ARH with X-pipe
I like what that did but I need more thrills in the pwr department.
I looked into buying the Eddlebrock Supercharger. There is no way I would attempt to do this myself. The quotes I received to do this was crazy. The lowest total price was 8k and the highest was 9.5K
I am willing to spend about 4-5K more but have no idea what to do.
I don't want to do a cam and this car is a daily driver to work vehicle.
I too, have been wondering about how to get 50-70 more Hp?
I know I need a CAI + 160 thermostat, + tune; will do that soon.
Is the FAST 102 & port TB the way to go?
If so, any estimated cost figures?
Thanks, hope this response adds to your questions too "05z51vette"?
VR,
Gordy
I only have done two things to my car as far as pwr mods:
Borla Stinger exhaust
(Headers) ARH with X-pipe
I like what that did but I need more thrills in the pwr department.
I looked into buying the Eddlebrock Supercharger. There is no way I would attempt to do this myself. The quotes I received to do this was crazy. The lowest total price was 8k and the highest was 9.5K
I am willing to spend about 4-5K more but have no idea what to do.
I don't want to do a cam and this car is a daily driver to work vehicle.
I too, have been wondering about how to get 50-70 more Hp?
I know I need a CAI + 160 thermostat, + tune; will do that soon.
Is the FAST 102 & port TB the way to go?
If so, any estimated cost figures?
Thanks, hope this response adds to your questions too "05z51vette"?
VR,
Gordy
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
I am in the same similar place as "05z51vette": don't mean to steal your post but I have the same questions too.
I only have done two things to my car as far as pwr mods:
Borla Stinger exhaust
(Headers) ARH with X-pipe
I like what that did but I need more thrills in the pwr department.
I looked into buying the Eddlebrock Supercharger. There is no way I would attempt to do this myself. The quotes I received to do this was crazy. The lowest total price was 8k and the highest was 9.5K
I am willing to spend about 4-5K more but have no idea what to do.
I don't want to do a cam and this car is a daily driver to work vehicle.
I too, have been wondering about how to get 50-70 more Hp?
I know I need a CAI + 160 thermostat, + tune; will do that soon.
Is the FAST 102 & port TB the way to go?
If so, any estimated cost figures?
Thanks, hope this response adds to your questions too "05z51vette"?
VR,
Gordy
I only have done two things to my car as far as pwr mods:
Borla Stinger exhaust
(Headers) ARH with X-pipe
I like what that did but I need more thrills in the pwr department.
I looked into buying the Eddlebrock Supercharger. There is no way I would attempt to do this myself. The quotes I received to do this was crazy. The lowest total price was 8k and the highest was 9.5K
I am willing to spend about 4-5K more but have no idea what to do.
I don't want to do a cam and this car is a daily driver to work vehicle.
I too, have been wondering about how to get 50-70 more Hp?
I know I need a CAI + 160 thermostat, + tune; will do that soon.
Is the FAST 102 & port TB the way to go?
If so, any estimated cost figures?
Thanks, hope this response adds to your questions too "05z51vette"?
VR,
Gordy
You DO need a CAI, Tune and Ported Intake Manifold (stock or FAST...FAST being definitely better)
Parts will come in under 2k with the FAST and under 1500 with the ported stocker.
It should take no one more than 3 hours to install the CAI and intake manifold...so figure 225ish for labor (75 an hour generally seems to be a good guess)
Tech Contributor
Joined: Jul 2002
Posts: 14,950
Likes: 264
From: St. Louis, MO
St. Jude Donor '08
I purchased the 102 as it is a direct bolt-on and requires no modifications to switch out.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
I picked up 18 rwhp and 21 rwtq over my ported LS2 intake. I already had a ported TB that I purchased when I did the ported LS2 intake.
I would think an un-ported Fast 102 and a ported TB on your car would be worth around 22-25 rwhp & 24 + rwtq with a clean-up tune.
Ported factory is a 10 rwhp option for you if you can't swing the note for the FAST.
Race Director
Joined: Aug 2005
Posts: 13,592
Likes: 187
From: Hudson WI
NCM Sinkhole Donor
Don't laugh, but LS3 heads with LS3 intake should get you there for about the same money as FAST intake and then you have growth for the future. You will need to buy the LS3 parts used to make the numbers work.