[Z06] Desert Attack LS7 680hp/576tq
05-22-2009, 10:16 AM
#1
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Desert Attack LS7 680hp/576tq
Thought you guys might like to see this
Desert Attack LS7 427
12:1 compression
GM Stage 3 cam
GM single plane manifold
Kinsler throttle body
Desert Attack LS7 427
12:1 compression
GM Stage 3 cam
GM single plane manifold
Kinsler throttle body
05-22-2009, 10:33 AM
#3
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05-22-2009, 01:19 PM
#5
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05-22-2009, 05:22 PM
#7
Melting Slicks
UFB 
08-22-2009, 03:16 PM
#8
Melting Slicks
Reviving this thread.
Jason, in your opinion will this setup or the Kinsler individual TB setup make more power (and you know what engine I am referring to
)? Out of curiosity did you run this 4bbl TB with a cable - looks like it in the pic? Can these TBs be made to work with fly by wire?
Jason, in your opinion will this setup or the Kinsler individual TB setup make more power (and you know what engine I am referring to
)? Out of curiosity did you run this 4bbl TB with a cable - looks like it in the pic? Can these TBs be made to work with fly by wire?
08-22-2009, 04:16 PM
#9
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Not without some engineering.
08-22-2009, 11:09 PM
#12
Le Mans Master
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Reviving this thread.
Jason, in your opinion will this setup or the Kinsler individual TB setup make more power (and you know what engine I am referring to )? Out of curiosity did you run this 4bbl TB with a cable - looks like it in the pic? Can these TBs be made to work with fly by wire?
Jason, in your opinion will this setup or the Kinsler individual TB setup make more power (and you know what engine I am referring to
)? Out of curiosity did you run this 4bbl TB with a cable - looks like it in the pic? Can these TBs be made to work with fly by wire?
The engine is a tall deck Dart block 427 CID using a Hilborn stack system. The engine is equipped with Brodix 18 degree heads, Jessel shaft rocker system, a big road race solid roller cam. it made just south of 730hp on the engine dyno. You can see the C5 TPS sensor on the left front throttle body, we built a special mount for the sensor. The servo motor is on the right bank of throttle bodies with a jack shaft between the two sides. Balancing the throttle plates was a royal PAIN IN THE ****. These throttle bodies have a 2 5/8 throttle plate in each body, the owner went slightly smaller to deliver better low end response. The cam was BIG, it has duration numbers in the 260s and was ground on something like a 107 or 108. If it was a carbureted engine it would likely not idle under 1500 or so. Using individual throttle bodies and runners means there is no overlap to pollute the common plenum area in a conventional intake manifold. This thing idles at 1000 RPM after a warm up.
Last edited by tjwong; 08-22-2009 at 11:13 PM.
08-23-2009, 08:48 AM
#13
Melting Slicks
I done one in a 40 Ford street rod using MEFI 4B ECU and integrating a GM ETC TAC Module and a C5 pedal assembly into the system. It is a LOT of work during the calibration process.
The engine is a tall deck Dart block 427 CID using a Hilborn stack system. The engine is equipped with Brodix 18 degree heads, Jessel shaft rocker system, a big road race solid roller cam. it made just south of 730hp on the engine dyno. You can see the C5 TPS sensor on the left front throttle body, we built a special mount for the sensor. The servo motor is on the right bank of throttle bodies with a jack shaft between the two sides. Balancing the throttle plates was a royal PAIN IN THE ****. These throttle bodies have a 2 5/8 throttle plate in each body, the owner went slightly smaller to deliver better low end response. The cam was BIG, it has duration numbers in the 260s and was ground on something like a 107 or 108. If it was a carbureted engine it would likely not idle under 1500 or so. Using individual throttle bodies and runners means there is no overlap to pollute the common plenum area in a conventional intake manifold. This thing idles at 1000 RPM after a warm up.
The engine is a tall deck Dart block 427 CID using a Hilborn stack system. The engine is equipped with Brodix 18 degree heads, Jessel shaft rocker system, a big road race solid roller cam. it made just south of 730hp on the engine dyno. You can see the C5 TPS sensor on the left front throttle body, we built a special mount for the sensor. The servo motor is on the right bank of throttle bodies with a jack shaft between the two sides. Balancing the throttle plates was a royal PAIN IN THE ****. These throttle bodies have a 2 5/8 throttle plate in each body, the owner went slightly smaller to deliver better low end response. The cam was BIG, it has duration numbers in the 260s and was ground on something like a 107 or 108. If it was a carbureted engine it would likely not idle under 1500 or so. Using individual throttle bodies and runners means there is no overlap to pollute the common plenum area in a conventional intake manifold. This thing idles at 1000 RPM after a warm up.
08-23-2009, 02:25 PM
#14
Le Mans Master
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Very impressive setup - thanks for posting. Jason and I have been chatting about potential future plans with a Kinsler setup. Your point about reducing overlap effects inherent to a common plenum interests me - we are using the GM Stage III cam and it is ground on 107 LSA with 40 degrees of overlap. My car idles fairly well at 1200 rpm but it occasionally does a little "hunting" for steady idle - nothing I can't live with, but of course the main reason to consider a individual runner intake is the top end power potential as your 730 HP number verifies!
This also was a standalone EFI system using a DFI Gen7 system. This particular engine used a dual sync distributor giving me fuel SEFI capability which allowed me to trim fueling to the indiviidual cylinders. Having this ability is the best way to run something like these. The reason is that no matter how well one balances the stacks, there will always be some inconsistencies between cylinders. One maybe a bit lean another rich, when they are too lean the have a lean pop, too lean won't burn so you hear a small pop in the throttle body as it backfires. So with SEFI you can add a bit of fuel to those cylinders that are lean and take out some where they are rich. It will be a lot of work for your tuner should you go down this road.
