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Guess my horsepower

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Old Aug 28, 2007 | 06:51 PM
  #1  
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Default Guess my horsepower

guess my horsepower and win nothing

2005 Corvette C6 Z-51 6-Speed 30,000 miles
What I have done to the car
Vararam and Throttle body spacer – $390 for both shipped
Ported intake manifold - $225
Port and Polished throttle body – Free I did it myself
Removed cats $50 for replacements so I could get the flange, sold cats for $70
Straight pipe $10
Removed MAF screen – Free
Spark plugs Denso Iridium IT20 1 step colder indexed - $50
Heat shielding around upper radiator hose – Free
Royal Purple in transmission $30
Drained 1 gal of coolant and replaced it with 1 gal of distilled water and 2 bottles of redline water wetter to help the thermal efficiency. The car still has the stock thermostat. Cruising the car runs 192-194 degrees
Amsoil oil and filter
Catch can $20 each. one on PCV and one on FAT
Doubled stock tunnel plates $20
Magnetic drain plug $10
Optima yellow top
Oil cooler 11” x 5 ¾” x 1 ½ “ 130-70264 from JEGS $63
(still using stock oil cooler as well) Fittings and lines $10

Yes it still has the stock exhaust manifolds and stock exhaust.

Have spent about $700 in performance plus $530 for the tune and dyno time.

what kind of horsepower do you think i will put down to the rear wheels
to make things easier on a dynojet with 12.8-12.9 A/F



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Old Aug 28, 2007 | 06:56 PM
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Not enough. Horsepower is like garage space, you never have enough.

The Optima Yellow Top is good for 10-12 HP alone.........
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Old Aug 28, 2007 | 07:19 PM
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365 or 385 or 405 .....
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Old Aug 28, 2007 | 07:22 PM
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370?
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Old Aug 28, 2007 | 07:22 PM
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OHHH it's a LS2... 199.... If it was a LS3 515

But really 375?
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Old Aug 28, 2007 | 07:42 PM
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I will guess 372. When will we see the graph with the info???
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Old Aug 28, 2007 | 08:24 PM
  #7  
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366 rwhp
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Old Aug 28, 2007 | 09:44 PM
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Originally Posted by yellowc6ohio
guess my horsepower and win nothing

2005 Corvette C6 Z-51 6-Speed 30,000 miles
What I have done to the car
Vararam and Throttle body spacer – $390 for both shipped
Ported intake manifold - $225
Port and Polished throttle body – Free I did it myself
Removed cats $50 for replacements so I could get the flange, sold cats for $70
Straight pipe $10
Removed MAF screen – Free
Spark plugs Denso Iridium IT20 1 step colder indexed - $50
Heat shielding around upper radiator hose – Free
Royal Purple in transmission $30
Drained 1 gal of coolant and replaced it with 1 gal of distilled water and 2 bottles of redline water wetter to help the thermal efficiency. The car still has the stock thermostat. Cruising the car runs 192-194 degrees
Amsoil oil and filter
Catch can $20 each. one on PCV and one on FAT
Doubled stock tunnel plates $20
Magnetic drain plug $10
Optima yellow top
Oil cooler 11” x 5 ¾” x 1 ½ “ 130-70264 from JEGS $63
(still using stock oil cooler as well) Fittings and lines $10

Yes it still has the stock exhaust manifolds and stock exhaust.

Have spent about $700 in performance plus $530 for the tune and dyno time.

what kind of horsepower do you think i will put down to the rear wheels
to make things easier on a dynojet with 12.8-12.9 A/F




Spark plugs Denso Iridium IT20 1 step colder indexed - $50 You need to look at there web site the lower there # on plug the hotter the plug. Hope this helps. Bill B
Reply
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Old Aug 28, 2007 | 09:46 PM
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Originally Posted by blue racer c6
Spark plugs Denso Iridium IT20 1 step colder indexed - $50 You need to look at there web site the lower there # on plug the hotter the plug. Hope this helps. Bill B
If you installed Pulstar plugs add 29RWHP
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Old Aug 28, 2007 | 10:10 PM
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371 rwhp.
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Old Aug 28, 2007 | 10:10 PM
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Originally Posted by runutzzzzz
If you installed Pulstar plugs add 29RWHP
BWAHAHAHAHAAH!!
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Old Aug 28, 2007 | 10:19 PM
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I'm going with 370.

350 Stock, 10 for a tune and 10 for the mods.
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Old Aug 29, 2007 | 12:01 AM
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345 stock, 10 for the mods (mainly the ported intake & tune): 355 total.
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Old Aug 29, 2007 | 12:12 AM
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ok here it is

351 hp bone stock – dyno jet
367 untuned 13.5 A/F on RX7 stores brand new in ground dynojet.
377 hp 357 tq tuned 12.9 A/F 23.5 degrees of timing on RX7 store dynojet by Rob LaSota
After data logging it at Mid-Ohio I detected some knock so I took it back and without changing the tune it put down 398 RWHP uncorrected.
SAE corrected it made 390
Made 4 pulls 2 were 389 hp and 2 were 390 hp. Done pretty much back to back.

87.87 degrees outside temp
29.25 in-Hg
24% humidity
1.02 SAE
Full smoothing
Only thing that was different was I changed my Fresh Air Tube from having a breather to putting it back to stock (connected to the intake) but with a catch can. I also added an oil cooler and switched to amsoil.

390 RWHP 365 Ft/lb Torque for $1200 including a tune.
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Old Aug 29, 2007 | 12:18 AM
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That is stout for the minor perf mods you did! Great job!!!!
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Old Aug 29, 2007 | 11:38 AM
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Default confused

sorry if this sounds extreamly stupid but I thaught the 2005 came with 400 hp stock?
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Old Aug 29, 2007 | 11:47 AM
  #17  
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Originally Posted by rocdom
sorry if this sounds extreamly stupid but I thaught the 2005 came with 400 hp stock?
400 HP stock to the motor which with a 15% drivetrain loss is 340 HP to the wheels. if you want to go by motor horsepower mine is making 460 HP to the motor
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Old Aug 29, 2007 | 01:24 PM
  #18  
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Thank you for the info. Guess that's why I was told after my mods that I was producing 460hp and 475 lbs of torque. New to the site and a very new to vette mods but i know that the speed shop made my car VERY fast. Thanks again
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Old Aug 29, 2007 | 02:17 PM
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I guess that I just wasted $1800 for headers, with less horsepower. 390rwhp without headers.
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Old Aug 29, 2007 | 08:12 PM
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I'm going to guess somewhere in the neighborhood of 389-390+ rwhp and 364-365+ lb/ft of torque...am I close?
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