FINALLY! headed to the dyno. 347 mid frame 78
05-18-2014, 02:13 AM
#1
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FINALLY! headed to the dyno. 347 mid frame 78 well after this taking far to long to get finished the car is wrapped up sitting nice and sexy on drag radials and factory wheels. sleeper status
she is headed to the dyno at CMS in southern CA. weather should be reasonable where there too headed in on the 22nd..
here is a run down of the build
MOTOR
forged 347 LS6 bottom end -11cc wiseco pistons eagle rods stock crank
VA speed turbo cam VTC2 23x/22x and .600ish lift.
AFR v2 230 heads 65cc chambers
ls6 intake ported ls1 throttle body
127 lbs @58 psi injectors mast fuel rails
holley billet pump
DRIVETRAIN
newer core 4l80e built to handle 800+
circle D muiltidisk billet verter stalled at about 3200
gforce1320/PTS 3.5 alum driveshaft and full built gforce rear with trutrc and 3.46 gears
TURBO SETUP.
turbonetics midframe 78mm T4 with 1.14 ar 75mm F1 turbine and big comp cover similar to the y2k unit
turbosmart raceport 52mm BOV
turbosmart 50mm wastegate.
will have 2.25 in to 2.5 crossover 4'' down pipe cutout and full 4" exhaust.
E85 tune up
10-12 lbs low
20-22 lbs high
mustang dyno.
power guesses?
trying to set the stock cube turbo GTO record.. from what i have found that 9.70 right now..
she is headed to the dyno at CMS in southern CA. weather should be reasonable where there too headed in on the 22nd..
here is a run down of the build
MOTOR
forged 347 LS6 bottom end -11cc wiseco pistons eagle rods stock crank
VA speed turbo cam VTC2 23x/22x and .600ish lift.
AFR v2 230 heads 65cc chambers
ls6 intake ported ls1 throttle body
127 lbs @58 psi injectors mast fuel rails
holley billet pump
DRIVETRAIN
newer core 4l80e built to handle 800+
circle D muiltidisk billet verter stalled at about 3200
gforce1320/PTS 3.5 alum driveshaft and full built gforce rear with trutrc and 3.46 gears
TURBO SETUP.
turbonetics midframe 78mm T4 with 1.14 ar 75mm F1 turbine and big comp cover similar to the y2k unit
turbosmart raceport 52mm BOV
turbosmart 50mm wastegate.
will have 2.25 in to 2.5 crossover 4'' down pipe cutout and full 4" exhaust.
E85 tune up
10-12 lbs low
20-22 lbs high
mustang dyno.
power guesses?
trying to set the stock cube turbo GTO record.. from what i have found that 9.70 right now..
05-18-2014, 09:37 AM
#3
Launching!
Sounds like a solid build, just for fun, I'll say 637hp
disclaimer: that is a off the top guess, did not think too hard, and I am generally horrible at guessing these sort of things. Hopefully its what you need!
disclaimer: that is a off the top guess, did not think too hard, and I am generally horrible at guessing these sort of things. Hopefully its what you need!
05-18-2014, 06:36 PM
#5
Can you provide more details on the bigger comp cover? Was it a simple bolt on? I am assuming the turbo is basically the same otherwise to the standard 7875 that some here are running correct?
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05-18-2014, 11:55 PM
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really think the pump will limit me on e85? i figured the turbine will be the limiting factor before the pump.
05-19-2014, 12:19 AM
#9
Where's the build thread?!?
When a gto gets a turbo it must always have a build thread.
Idk how well that pump you have flows but I'm going to have to say the 75mm turbine is going to choke up before your fuel runs out more than likely.
Should have sold that turbo off a long time ago and got the smaller 7875 version. Would have been easier to package for whoever did the fab work that's for sure. They both will make the same power since they use the same wheels.
When a gto gets a turbo it must always have a build thread.
Idk how well that pump you have flows but I'm going to have to say the 75mm turbine is going to choke up before your fuel runs out more than likely.
Should have sold that turbo off a long time ago and got the smaller 7875 version. Would have been easier to package for whoever did the fab work that's for sure. They both will make the same power since they use the same wheels.
05-19-2014, 07:36 AM
#11
My 80lb injectors (58psi base) were maxed at 16lbs and the dual 255s were going to be next. I'm not familiar with that holley pump but you may be close, your injectors will be fine.
Guess i assumed you had a bigger turbine when i glanced over the build, oops. That 80e is gonna rob of you high(er) numbers but the car should fly on high boost.
05-19-2014, 09:48 AM
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Which holley billet pump? If its the 1800, it should get close to 900whp on E85 through an auto. Id guess that turbo would also start falling off around 850-900. So my guess would be in that range if you push it til you run out of fuel or turbo. Also, any pics of the build? Love to see other GTO turbo setups! Im getting ready to start on my 06 GTO 5.3/S475/M6 build. PLan on starting a thread once I get the motor together and start building the manifolds.
05-19-2014, 06:53 PM
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yea its the 1800 pump.
i only plan to go bigger so this turbo will allow an s400 to almost drop right in being they are similar in size.
and now for a few pics
i only plan to go bigger so this turbo will allow an s400 to almost drop right in being they are similar in size.
and now for a few pics
