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08-27-2013, 11:29 AM
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#1 |
 Drives: 2010 twin turbo ss Join Date: Nov 2012
Location: Oklahoma City
Posts: 306
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What compression ratio is everyone running on built boosted motors?
Built for pump gas
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08-27-2013, 11:48 AM
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#2 |
  
Drives: 2010 rs/ss black # 10,308 Join Date: Mar 2009
Location: hoffman estates, il
Posts: 914
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After i am done with my build. i will be right around 9.7:1 CR.
Yes the more you lower CR, the safer you are running more boost. But that also has the reverse affect that the car looses power when not in boost. So race application you can go lower, but being a street car that i most likely will DD. Its good to have slightly higher compression. When i am done i will be running around 14-16psi on the street and 18-20psi @ the track. Should be fun to say the least.
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08-27-2013, 12:15 PM
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#3 |
      
Drives: 11 Seconds or Faster Join Date: May 2012
Location: Arvada, Colorado
Posts: 2,797
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9:1 here, but my motor is purpose built for racing, not a street driver at all.
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I Ain't About That Stock Life.
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08-27-2013, 12:28 PM
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#4 |
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USAF retired! Thank God!
Drives: 2011 1SS, 1LT red,1LT/RS SGM 98Z28 Join Date: Jul 2011
Location: North Texas
Posts: 2,799
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Im at about 9.4:1 with -23cc Wiseco coated blower pistons. At least the CR i calculated to to be with 70cc chambers. I run Torco Accelerator blended with 93 octane for an in tank octane of about 95-96 octane plus the meth during summer. Car was tuned with meth turned off.
Im only 14psi now on my little D1SC but am about to pull the trigger on twin PTE6766 turbos running up the boost to 18 or so and a little over 1000rwhp. Just a street car that was built to run down ZO6s and ZR1s on the road course a couple times a year
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08-27-2013, 01:05 PM
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#5 |
  Drives: 2006 Z06 Join Date: Oct 2010
Location: Gilbert, AZ
Posts: 5,712
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9.7:1 but if I could go back I would do 10:1.
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Nick
Corvette Z06 -1200ish rwhp |
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08-27-2013, 03:33 PM
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#6 |
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Drives: Maggie blown LS3 vette Join Date: Aug 2009
Location: SE TX
Posts: 1,490
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How much boost are you going to run? What octane fuel? Using meth?
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08-27-2013, 03:56 PM
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#7 |
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Emerald Coast Camaros
Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012
Location: Woodville,FL.
Posts: 1,814
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9:1 only at 12lb of boost will go for 18lb soon
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Best @ 586/525 =10.41 @ 133
AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF  |
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08-27-2013, 04:09 PM
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#8 |
Drives: 2009 ZR1 Join Date: May 2010
Location: KCMO
Posts: 3,205
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10.2:1 If I recall...
93 octane and meth, 22# |
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08-27-2013, 04:26 PM
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#9 |
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Boosted Moderator
Drives: Bone Stock LS3 Join Date: Sep 2009
Location: Marion Tx
Posts: 15,484
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9.7:1 for pump gas at 12 lbs on the street with 97 octane... With 429 CI, this is good for right at 900 RWHP
Racing we bump the boost to 25 lbs and run C16 race fuel... in the tank and to mix with the nitrous...With the 429 CI, this makes for a hell of a lot more power....
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If the car feels like it is on rails, you are probably driving too slow. -Ross Bentley
Horsepower is how fast you hit the wall. Torque is how far you take the wall with you. “If everything seems under control, you're just not going fast enough.” Mario Andretti If you can turn, you ain't going fast enough... |
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08-27-2013, 04:38 PM
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#10 |
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www.1baddogracing.com
Drives: 2010 IOM 2SS/RS Auto Join Date: Apr 2011
Location: Indian Land, SC
Posts: 998
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10.4:1 on 93 octane and meth
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2010 Camaro 2SS/RS Aqua Blue Metalllic (bolt-ons)
2020 Camaro 2SS/RS Satin Steel Metallic - Shock and Steel Edition 1 of 98 - A10 (bolt-ons) 2010 Camaro 2SS/RS IOM - 1,023 RWHP 813RWTQ (Previous Paxton Record Holder: 9.82@139) Built and Tuned by Heintz Racing Go: DSS 9", RPM Trans TH400, Carlyle Racing 15" Conversion, ECS Vortech YSI-B, Fore Fuel System, ID1700, Gall Racing 427 C.I LSX, Mast 285CC Heads, HR Custom Cam Show: Custom Painted Stripes/Badges (Orange Pearl over White), Z/TA Spoiler, VFN Hood, Weld Wheels http://www.HeintzRacing.com http://www.youtube.com/user/1baddogracing |
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08-27-2013, 04:55 PM
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#11 |
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Account Suspended
Drives: 2011 2SS RS 6M Inferno Orange Join Date: Nov 2010
Location: San Clemente CA
Posts: 309
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10.1:1 ... Which was recommended by Dustin Whipple to get the best efficiency out of the blower.
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08-27-2013, 06:34 PM
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#12 |
Drives: Silver 2010 SS Camaro Join Date: Jul 2009
Location: TN
Posts: 2,562
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I will be at 9.5:1 per Andy at ADM running around 13-15psi.
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MODS:
ADM built 417, 2.9L Whipple with 3.250 pulley, ADM ported and polished LSA heads,ADM stage3 cam,ADM LSA belt drive system,ADM CAI race scoop, ADM dual fuel pumps, ID 850's, BMR full suspension, Gforce 9 inch kit with 3.5 inch driveshaft, Street Slayer twin carbon clutch, Lingenfelter oil seperator. Tuned by built by ADM Performance, 763rwhp,705rwtq |
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08-27-2013, 06:36 PM
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#13 |
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ЯєŧąяĐ Єl¡m¡иąŧøя ™
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Between 9.8-10.2 is the best place to be.
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08-27-2013, 06:54 PM
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#14 |
 
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10/7 on my build waiting on heads to get done with the porting
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