| 2004-2007 Cadillac CTS-V Performance Mods Discuss all Cadillac CTS-V performance modifications here. Engine tunes, exhaust, intake, suspension and more. | Cadillac Forums: Cadillac engine mod Question 
02-28-09, 06:16 PM
| | Cadillac Owners Member Cadillac(s): 2005 Cadillac CTS-V  | | | | | Cadillac engine mod Question
I haven't really seen this question answered myself. What is the truth about bolt on and engine tune mods for the ls6. Is it simple math, intake-20hp,-exhaust-35hp,-program tune-20hp, after market intake manifold-35hp, if you added all this up would the ctsv pump out 110hp more? this doesn't seem to make sense to me. Has anyone actually done all the above and dynoed for results. What is the highest horsepower achieved with only bolt ons(not including supercharging) for the ctsv ls6 only. thanks |
02-28-09, 06:44 PM
| | Cadillac Owners Connoisseur Cadillac(s): 05 PLATINUM CTS-V | | Join Date: Jun 2008 Location: TEMPE, AZ Age: 24 | | | Re: Cadillac enigne mod Question
i wish my intake and exhaust made 55hp.. sounds cool though! |
02-28-09, 07:11 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 2005 CTS-V | | Join Date: Nov 2005 Location: Spring, Texas | | | Re: Cadillac enigne mod Question
Quote:
Originally Posted by korey  I haven't really seen this question answered myself. What is the truth about bolt on and engine tune mods for the ls6. Is it simple math, intake-20hp,-exhaust-35hp,-program tune-20hp, after market intake manifold-35hp, if you added all this up would the ctsv pump out 110hp more? this doesn't seem to make sense to me. Has anyone actually done all the above and dynoed for results. What is the highest horsepower achieved with only bolt ons(not including supercharging) for the ctsv ls6 only. thanks | If you did everything on this list and nothing else, you would be fortunate to get back to the HP you started with. |
02-28-09, 07:31 PM
| | Cadillac Owners Connoisseur Cadillac(s): 05 PLATINUM CTS-V | | Join Date: Jun 2008 Location: TEMPE, AZ Age: 24 | | | Re: Cadillac enigne mod Question
Quote:
Originally Posted by darkman If you did everything on this list and nothing else, you would be fortunate to get back to the HP you started with. | dont be stupid.. you will make some power, but not 100+
the only way to tell is strap her on the dyno before and after |
02-28-09, 07:33 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 05 CTS-V raven black | | Join Date: Nov 2008 Location: North West Florida Age: 33 | | | Re: Cadillac enigne mod Question
Quote:
Originally Posted by korey I haven't really seen this question answered myself. What is the truth about bolt on and engine tune mods for the ls6. Is it simple math, intake-20hp,-exhaust-35hp,-program tune-20hp, after market intake manifold-35hp, if you added all this up would the ctsv pump out 110hp more? this doesn't seem to make sense to me. Has anyone actually done all the above and dynoed for results. What is the highest horsepower achieved with only bolt ons(not including supercharging) for the ctsv ls6 only. thanks | search for "trukk" he is one of a few bolt on kings here...he has all the bolt ons,,well a cam too..but I think he has a dyno without the cam
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2005 Black-on-Black-on Black | Trifecta tune | frankenstien exhaust: kooks headers, magnaflow X-pipe, corsa ss pipe, flowmaster race cans, and magnaflow tips | Katech V2 w/UUC bushings | Katech ported TB | |matching black painted engine cover | custom Intake tube | drop-in K&N filter | 265/40 BFG KD's | powdercoated factory wheels (gloss black) | Limo tint all around | tinted turns/fogs/3rd & reverse lights | Powdercoated upper/lower grill | UUC diff bushing | 3000K HID fog lights | 360rwhp |
02-28-09, 08:12 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 2007 Cadillac CTS-V | | Join Date: Apr 2007 Location: Plano, TX Age: 27 | | | Re: Cadillac enigne mod Question
Quote:
Originally Posted by korey I haven't really seen this question answered myself. What is the truth about bolt on and engine tune mods for the ls6. Is it simple math, intake-20hp,-exhaust-35hp,-program tune-20hp, after market intake manifold-35hp, if you added all this up would the ctsv pump out 110hp more? this doesn't seem to make sense to me. Has anyone actually done all the above and dynoed for results. What is the highest horsepower achieved with only bolt ons(not including supercharging) for the ctsv ls6 only. thanks | Intake: Maybe 1rwhp
Exhaust: Maybe 1rwhp
Tune: With above mods...around 15rwhp
I went from 323rwhp stock to 338rwhp with the above mods added.
I'm not sure how much aftermarket intake manifold would really add. I would guess 5-10rwhp if you had it tuned properly. |
02-28-09, 08:13 PM
|  | Cadillac Owners Member Cadillac(s): 05 maggied CTS-V, 03 maggied Z06 | | | | | Re: Cadillac enigne mod Question
If you want to make serious horse power you need to do serious engine work.
You can go the cheap and sleazy way and go nitrous.
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I am so expensive I can't even afford to hire me.... |
02-28-09, 09:32 PM
| | Cadillac Owners Connoisseur Cadillac(s): 2005 CTS-V | | Join Date: Nov 2005 Location: Spring, Texas | | | Re: Cadillac enigne mod Question
Quote:
Originally Posted by whisler151 Intake: Maybe 1rwhp
Exhaust: Maybe 1rwhp
Tune: With above mods...around 15rwhp
I went from 323rwhp stock to 338rwhp with the above mods added.
I'm not sure how much aftermarket intake manifold would really add. I would guess 5-10rwhp if you had it tuned properly. | Yep-And you did not start with an LS6. |
02-28-09, 09:55 PM
|  | Mods on hold till diff gets fixed. Cadillac(s): 2005 CTS-V | | Join Date: Jan 2005 Location: South Lyon, MI Age: 60 | | | Re: Cadillac engine mod Question
Bolt-ons would include headers, an intake (e.g. FAST 90), a 90mm TB, 1-3/4" headers, B&B full 3" exhaust, and a tune. (Forget the CAI, and I didn't include a crank pulley change nor valve train items.)
IMHO, this would get you up to ~45 RWHP.
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'05 CTS-V, Stealth Gray, Sunroof, 3M Clear Bra, B&M Shifter w/UUC Bushings, Specter Werkes Bushings, V Headrests, Wheel To Wheel Powertrain Tune, Corsa, Kooks w/Hi-Flo Cats, Ultimate Grid Pedals, Hotchkis Anti-Sways, STS-V Fogs, Ground Control 650R/600F, WW Clear Sidemarkers, Full-Size Spare, Magnuson SC Polished, CTS Console, FG2, Aggressive Street Alignment, MOMO Shift Knob, DSS/Hendrix Engrg Axles, UUC Flywheel. Soon: UUC MMs. 472 RWHP/411 RWTQ (Mustang dyno). |
03-01-09, 03:50 PM
| | Cadillac Owners Connoisseur Cadillac(s): 2007 Cadillac CTS-V | | Join Date: Apr 2007 Location: Plano, TX Age: 27 | | | Re: Cadillac engine mod Question
Quote:
Originally Posted by rand49er Bolt-ons would include headers, an intake (e.g. FAST 90), a 90mm TB, 1-3/4" headers, B&B full 3" exhaust, and a tune. (Forget the CAI, and I didn't include a crank pulley change nor valve train items.)
IMHO, this would get you up to ~45 RWHP. | Yeah, that sounds right. With properly tuned headers will give you ~30. I guess if you get Fast 92 intake & TB you could squeeze another 15 out.
Does changing out the crank pulley, UD pulley, or adding rocker arms/dual springs really add power? |
03-01-09, 04:00 PM
| | Cadillac Owners Connoisseur Cadillac(s): 2005 CTS-V | | Join Date: Nov 2005 Location: Spring, Texas | | | Re: Cadillac engine mod Question
The problem with the original list (of this thread) is that it retained the stock throttle body, stock exhaust manifold and stock cats. With those three stock components in place on an LS6 the CAI, aftermarket intake manifold, and catback exhaust would yield very little. The tune would depend on the tuner and therefore is always a crap shoot. |
03-02-09, 12:17 PM
|  | Truck Motor FTW! Cadillac(s): 2006 CTS-V | | Join Date: Aug 2007 Location: Chicago, IL | | | Re: Cadillac enigne mod Question
Aww heavy I thought better of you 
cheap and sleazy is a dry kit...a good (aka small) wet kit and a tune won't do you wrong....but refilling the bottle gets old... quick....
To do the happy gas right you need a wet kit, remote bottle opener, purge kit, bottle blanket, and an rpm switch.... after all the addons it's isn't much cheaper than doing mods the right way (the right way is FI or heads/cam... anything but the gas) Quote:
Originally Posted by heavymetals If you want to make serious horse power you need to do serious engine work.
You can go the cheap and sleazy way and go nitrous. |
Last edited by nmaier2201; 03-02-09 at 12:18 PM.
Reason: forgot the bottle blanket
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03-02-09, 01:46 PM
| | Cadillac Owners Connoisseur Cadillac(s): 2005 CTS-V, 2005 Escalade EXT, 2007 Escalade EXT | | Join Date: Apr 2007 Location: Sandbox, Kuwait | | | Re: Cadillac engine mod Question
Take my advice, plan your mods, and get a cam you are happy with. Not something others "swear by"...
And peak numbers are not the world...
I have a nice little beast comin together, but i think i went a bit overboard with the ported L92 heads...I will have a 500+ hp engine, but will i be happy with a loopie and unperdictable engine, not my cup of tea...But we shall see. I am goin with a two peice timin cover so cam changes aught to take less time and effort... |
03-02-09, 02:47 PM
|  | Cadillac Owners Enthusiast Cadillac(s): 04 CTS-V | | Join Date: Jul 2008 Location: Alabama Age: 27 | | | Re: Cadillac engine mod Question
Where would you people suggest buying the after market intake manifold and 90 mm throttle body? I've heard the throttle bodies are a joke from some places...
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04 V, Magnaflow Catback w/ x-pipe, K&N CAI, HID conversion fogs (4300K), LED's, UUC shifter and bushings, more to come....(hopefully my cam package very soon!!!) |
03-02-09, 10:40 PM
| | Cadillac Owners Enthusiast Cadillac(s): 05 Raven V | | Join Date: Oct 2008 Location: San Diego | | | Re: Cadillac engine mod Question
Quote:
Originally Posted by Naf Take my advice, plan your mods, and get a cam you are happy with. Not something others "swear by"...
And peak numbers are not the world...
I have a nice little beast comin together, but i think i went a bit overboard with the ported L92 heads...I will have a 500+ hp engine, but will i be happy with a loopie and unperdictable engine, not my cup of tea...But we shall see. I am goin with a two peice timin cover so cam changes aught to take less time and effort... | You ported the L92's?? Yeesh... I was looking at L92s as more than enough.. | | Cadillac Discussion Tools | | | 
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