New Speed Inc. Twin Turbo 408ci dyno results
02-23-2007, 06:01 PM
#1
FormerVendor
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New Speed Inc. Twin Turbo 408ci dyno results We recently finished up another turbo car.
Engine is 408ci based off of a 6.0 iron block, patriot heads, LS6 intake, stock throttle body. Cam is 234/234 @.050 113lsa
Turbo system consists of truck manifolds, precision PT67 P-trim turbos, Tial 38mm wastegates and 50mm BOV. Dual 3in downpipes "Y'd" into single 4 inch to a magnaflow muffler. Hot side is ceramic coated, cold side is powdercoated.
Tuning was done with HP Tuners 3-bar OS. Fuel system is dual external walbros and RC 75lb high impedence injectors @66psi base pressure.
Dyno runs were made through a T400 trans and 12bolt rearend.
16psi boost- 826rwhp
18.5psi boost- 882rwhp
Engine was pulled to 7,350.
Engine is 408ci based off of a 6.0 iron block, patriot heads, LS6 intake, stock throttle body. Cam is 234/234 @.050 113lsa
Turbo system consists of truck manifolds, precision PT67 P-trim turbos, Tial 38mm wastegates and 50mm BOV. Dual 3in downpipes "Y'd" into single 4 inch to a magnaflow muffler. Hot side is ceramic coated, cold side is powdercoated.
Tuning was done with HP Tuners 3-bar OS. Fuel system is dual external walbros and RC 75lb high impedence injectors @66psi base pressure.
Dyno runs were made through a T400 trans and 12bolt rearend.
16psi boost- 826rwhp
18.5psi boost- 882rwhp
Engine was pulled to 7,350.
02-23-2007, 06:12 PM
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Very nice. Like the "little differences", like the FPR directly off the rail. Those are some tight exhaust clearances too.
BTW, with all that boost (16+ PSI), is that on pump gas or race blend?
BTW, with all that boost (16+ PSI), is that on pump gas or race blend?
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02-23-2007, 06:52 PM
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right, ya'll are at it again!!
like it was asked before, would like to know more on gearing, stall, fuel type, and if those are locked numbers.
Im hoping to make similar numbers with my package. Got an s85 through a 408ci. 4l80e car.
good lob!! Oh, also, would ya'll happen to know what CR that motor is squeezed at? would love to see a vid of this car particularly...
like it was asked before, would like to know more on gearing, stall, fuel type, and if those are locked numbers.
Im hoping to make similar numbers with my package. Got an s85 through a 408ci. 4l80e car.
good lob!! Oh, also, would ya'll happen to know what CR that motor is squeezed at? would love to see a vid of this car particularly...
02-23-2007, 06:57 PM
#9
FormerVendor
Thread Starter
Thanks guys. 
Compression ratio is 8.8-1. Fuel is torco 110, total timing 18 degrees.
Converter is a TCT, not sure it's rating but I will find out, 3.42 gears, 275/40/17 et street radials. Dyno runs are unlocked.
Compression ratio is 8.8-1. Fuel is torco 110, total timing 18 degrees.
Converter is a TCT, not sure it's rating but I will find out, 3.42 gears, 275/40/17 et street radials. Dyno runs are unlocked.
02-23-2007, 07:24 PM
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is there a problem with the fuel lines being that close to the muffler?
car looks insane, and craftsmanship and attention to detail is awesome, keep up the good work
car looks insane, and craftsmanship and attention to detail is awesome, keep up the good work
02-23-2007, 07:31 PM
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awesome
One ? there was just a thread on th400 on the dynos
most everyone claimed that the th400 will read 100+ horsepower lower than a m6 or lockup tranny.
would a differnt tranny put you over 1000 hp.
if you had 1k hp .......................
traction=
One ? there was just a thread on th400 on the dynos
most everyone claimed that the th400 will read 100+ horsepower lower than a m6 or lockup tranny.
would a differnt tranny put you over 1000 hp.
if you had 1k hp .......................
traction=
02-23-2007, 07:53 PM
#15
Nice build. Great numbers. Hopefully he has suspension under there. He's got the power now to put it down to the ground.
On the dyno through T-400.. never have say anything about it, but I bet it varies a lot from one converter to another. An extra 100hp?????
Anyway great build
David
On the dyno through T-400.. never have say anything about it, but I bet it varies a lot from one converter to another. An extra 100hp?????
Anyway great build
David
02-23-2007, 08:05 PM
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4,000 converter
The fuel lines are not close, but look that way due to camera angle.
The suspension is all there, just needs some work on rear quarters or a 27" tire to get back end down.
tracks open here in about a month
The fuel lines are not close, but look that way due to camera angle.
The suspension is all there, just needs some work on rear quarters or a 27" tire to get back end down.
tracks open here in about a month
02-23-2007, 08:21 PM
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Originally Posted by obZidian
right, ya'll are at it again!!
02-23-2007, 08:29 PM
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It's been my search for this type of power on a stock PCM. This is exactly what I've been searching for. The crew at SPEED INC. has really put the number crunching together on this. Picking the right parts to meet my goal. Keep in mind that it's a stock throttle body and an LS6 intake.
I'm really excited about running this beast at the track. The black coating REALLY looks awesome. I know that most people like a lot more chrome but for me I'm tired of seeing that. I like the monochromatic look so this REALLY looks great. Thanks to Larry at SPEED for suggesting the look.
It's been a long ride trying parts to make the number. Some told me that I was just crazy trying some of the stock parts that I did but it just shows the potential that these motors can make.
Dan, Jim (intmd8) and Larry great work and thanks for the effort on this. Tom's (owner) been a great friend for many years for me. I remember the street racing you used to do back when. You've come a long way baby!
I'm really excited about running this beast at the track. The black coating REALLY looks awesome. I know that most people like a lot more chrome but for me I'm tired of seeing that. I like the monochromatic look so this REALLY looks great. Thanks to Larry at SPEED for suggesting the look.
It's been a long ride trying parts to make the number. Some told me that I was just crazy trying some of the stock parts that I did but it just shows the potential that these motors can make.
Dan, Jim (intmd8) and Larry great work and thanks for the effort on this. Tom's (owner) been a great friend for many years for me. I remember the street racing you used to do back when. You've come a long way baby!
