SFI 25.3 Outlaw Street '70 Buick GS Build with 1800hp Twin Turbo 455 LSx
06-19-2012, 11:49 PM
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SFI 25.3 Outlaw Street '70 Buick GS Build with 1800hp Twin Turbo 455 LSx Since I'm entering into the LS world I thought it's time I put my hat in the ring on this site and share my build. I'm a hard core Buick man originally starting out with the old big block iron and later evolving to the Grand Nationals when they hit the scene. This isn't my first rodeo with turbocharging as I've just about done it all over the years with the little V6 and was even fortunate enough to be able to go 7s with a single turbo V6. After kids came along and life got in the way, I began to grow tired of having a track only car so I decided to change directions. I've had this idea in the back of my head for several years and decided to pull the trigger a couple of years ago. While I would have liked to have kept it all Buick, there just isn't enough suitable hardware to go where I wanted to go reliably and without breaking the bank so the decision was made to go LS to the horror of many of my Buick contingents.
To give and idea of where I'm going with this - I've been around since the first days of Fastest Street Car competitions and have seen it evolve from mostly back halved cars running in the 9s to hight 8s to the state it's in now - mostly all out race cars with license plates where you can look through the grill and see the tail lights. Hardly street cars anymore. My goal is to build a REAL OUTLAW STREET car - one that idles smoothly, can actually be driven on the street, has power steering, and A/C but enough HP to change the rotation of the earth. Load the family up, drive it to the track with the A/C blasting, bust off some 7sec time slips, turn the A/C back on and drive it back home. Lofty goals for sure but ones that I think are easily attainable with the LS platform.
The car is a 1970 Buick GS - it WAS a numbers matching car until the previous owner sold the drivetrain and lost interest in the restoration. I picked the car up as a roller. Some may wonder why in the world a big ole Buick - the answer is simple - I'm a Buick guy at the core and this will be something you definitely won't see everyday in an era of mostly cookie cutter cars.
Since
..........
Here's how the car looked when we picked it up.......
The car is currently in the fabrication stages. The chassis is SFI 25.3 which is certified down to 6.50 ets at 3400#s. Overkill but gives us plenty of room to grow if needed......
Cantilever rear suspension with Afco Big Gun Shocks mounted inside trunk....
To give and idea of where I'm going with this - I've been around since the first days of Fastest Street Car competitions and have seen it evolve from mostly back halved cars running in the 9s to hight 8s to the state it's in now - mostly all out race cars with license plates where you can look through the grill and see the tail lights. Hardly street cars anymore. My goal is to build a REAL OUTLAW STREET car - one that idles smoothly, can actually be driven on the street, has power steering, and A/C but enough HP to change the rotation of the earth. Load the family up, drive it to the track with the A/C blasting, bust off some 7sec time slips, turn the A/C back on and drive it back home. Lofty goals for sure but ones that I think are easily attainable with the LS platform.
The car is a 1970 Buick GS - it WAS a numbers matching car until the previous owner sold the drivetrain and lost interest in the restoration. I picked the car up as a roller. Some may wonder why in the world a big ole Buick - the answer is simple - I'm a Buick guy at the core and this will be something you definitely won't see everyday in an era of mostly cookie cutter cars.
Since
..........Here's how the car looked when we picked it up.......
The car is currently in the fabrication stages. The chassis is SFI 25.3 which is certified down to 6.50 ets at 3400#s. Overkill but gives us plenty of room to grow if needed......
Cantilever rear suspension with Afco Big Gun Shocks mounted inside trunk....
Last edited by Bent6; 06-22-2012 at 10:14 AM.
06-20-2012, 12:03 AM
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Engine... And since the engine is the heart of any project........
LSx tall deck block 455 CID
Callies rotating assembly
JE Pistons w/ Hellfire rings
Solid roller cam
Jesel valvetrain
All-Pro Hurricane heads
Dual injectors per cylinder
Twin 72mm turbos
Liquid intercooler
I have been blown away by the performance of this engine as it put down the power with way less boost than we thought would be necessary to hit our goals. This thing idles like a kitten and puts out 1300hp on pump gas and right around 1800hp on the wick. We dynoed it up to 1580hp running only 21-22psi to keep from beating it up too much before we got it in the car. It's set up to run in the 35psi range so there's plenty more there. The limiting factor of this combination is the cam and the turbos - a switch to twin 88s would easily put it over the 2kHP mark but the streetability would suffer.
LSx tall deck block 455 CID
Callies rotating assembly
JE Pistons w/ Hellfire rings
Solid roller cam
Jesel valvetrain
All-Pro Hurricane heads
Dual injectors per cylinder
Twin 72mm turbos
Liquid intercooler
I have been blown away by the performance of this engine as it put down the power with way less boost than we thought would be necessary to hit our goals. This thing idles like a kitten and puts out 1300hp on pump gas and right around 1800hp on the wick. We dynoed it up to 1580hp running only 21-22psi to keep from beating it up too much before we got it in the car. It's set up to run in the 35psi range so there's plenty more there. The limiting factor of this combination is the cam and the turbos - a switch to twin 88s would easily put it over the 2kHP mark but the streetability would suffer.
06-20-2012, 06:29 AM
#6
06-20-2012, 06:48 AM
#7
Good Lord.... and nice project!
And since the engine is the heart of any project........
LSx tall deck block 455 CID
Callies rotating assembly
JE Pistons w/ Hellfire rings
Solid roller cam
Jesel valvetrain
All-Pro Hurricane heads
Dual injectors per cylinder
Twin 72mm turbos
Liquid intercooler
I have been blown away by the performance of this engine as it put down the power with way less boost than we thought would be necessary to hit our goals. This thing idles like a kitten and puts out 1300hp on pump gas and right around 1800hp on the wick. We dynoed it up to 1580hp running only 21-22psi to keep from beating it up too much before we got it in the car. It's set up to run in the 35psi range so there's plenty more there. The limiting factor of this combination is the cam and the turbos - a switch to twin 88s would easily put it over the 2kHP mark but the streetability would suffer.
LSx tall deck block 455 CID
Callies rotating assembly
JE Pistons w/ Hellfire rings
Solid roller cam
Jesel valvetrain
All-Pro Hurricane heads
Dual injectors per cylinder
Twin 72mm turbos
Liquid intercooler
I have been blown away by the performance of this engine as it put down the power with way less boost than we thought would be necessary to hit our goals. This thing idles like a kitten and puts out 1300hp on pump gas and right around 1800hp on the wick. We dynoed it up to 1580hp running only 21-22psi to keep from beating it up too much before we got it in the car. It's set up to run in the 35psi range so there's plenty more there. The limiting factor of this combination is the cam and the turbos - a switch to twin 88s would easily put it over the 2kHP mark but the streetability would suffer.
__________________
95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be
95 Pontiac Formula- Stock engine with ATI Procharger, Moser 12 bolt w/4:30 gears, Rossler trans, Neil Chance 4000 stall, M/T ET streets, 10.914@ 121.90mph, 1.452 60ft. GMHTP November 2010 Feature Car. Check it out at:
https://www.motortrend.com/features/...ebird-formula/
http://www.youtube.com/watch?v=abZ1z...ature=youtu.be
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06-20-2012, 09:47 AM
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Here are some more pics of the car.......
Weld Vitesse 15x12s with double bead locks and 315/60 MT DRs.......
Fuel and water cells.......cell on the left is water/ice reservoir for the intercooler, large cell in middle is for pump gas, and cell on right is for the good stuff. Props to Robert @ Chiseled Performance for the killer fab work on the cells......
Weld Vitesse 15x12s with double bead locks and 315/60 MT DRs.......
Fuel and water cells.......cell on the left is water/ice reservoir for the intercooler, large cell in middle is for pump gas, and cell on right is for the good stuff. Props to Robert @ Chiseled Performance for the killer fab work on the cells......
wow!!! Nice setup! and with air conditioning!!! 
