GS-F project
Thread Starter
Driver School Candidate
Joined: Feb 2009
Posts: 31
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From: ca
GS-F project
hi everyone,
If GOD helps me, i will start this project asap. I want to build an gs460 to compete with e63 amg. What performance mods for big hps are available for this car? I think forced induction isnt the best route, because of engine compression. do you think this engine can be enlarged to 6.2 liter? i need at least 490hp. i believe it comes from factory with around 360hp or 380hp.i need only 120hp
the exhaust i will get from c63. i want that roar.
what do you recommend for the suspension?
Please give me your opinion.
If GOD helps me, i will start this project asap. I want to build an gs460 to compete with e63 amg. What performance mods for big hps are available for this car? I think forced induction isnt the best route, because of engine compression. do you think this engine can be enlarged to 6.2 liter? i need at least 490hp. i believe it comes from factory with around 360hp or 380hp.i need only 120hp
the exhaust i will get from c63. i want that roar.
what do you recommend for the suspension?
Please give me your opinion.
"only 120hp", that's about 33% increase over factory. With the money spent on boring out the motor and machine work, I'd believe you would be right in the market for a nice turbo kit. I think with 10 - 12 pounds of boost your car will easily see that number; with supporting mods of course.
Even with higher compression, you can still use forced induction with the correct tune. You're tuning gap will just be a bit smaller.
Even with higher compression, you can still use forced induction with the correct tune. You're tuning gap will just be a bit smaller.
Last edited by SChema; Aug 5, 2010 at 01:45 PM.
errr you have long way to go... gs460 is only 340hp, that's 150 for you to reach 490, that's almost like 50% increase. i don't see how you can reach there unless you use FI (if you can get it to tune) or you do some insane major engine modification, and followed with reliability issues.
good luck
good luck
hi everyone,
If GOD helps me, i will start this project asap. I want to build an gs460 to compete with e63 amg. What performance mods for big hps are available for this car? I think forced induction isnt the best route, because of engine compression. do you think this engine can be enlarged to 6.2 liter? i need at least 490hp. i believe it comes from factory with around 360hp or 380hp.i need only 120hp
the exhaust i will get from c63. i want that roar.
what do you recommend for the suspension?
Please give me your opinion.
If GOD helps me, i will start this project asap. I want to build an gs460 to compete with e63 amg. What performance mods for big hps are available for this car? I think forced induction isnt the best route, because of engine compression. do you think this engine can be enlarged to 6.2 liter? i need at least 490hp. i believe it comes from factory with around 360hp or 380hp.i need only 120hp
the exhaust i will get from c63. i want that roar.
what do you recommend for the suspension?
Please give me your opinion.
Buy an e63 or m5. Or as others have mentioned, do a motor swap.
executive matchup
Joined: Apr 2008
Posts: 5,771
Likes: 13
From: BC
errr you have long way to go... gs460 is only 340hp, that's 150 for you to reach 490, that's almost like 50% increase. i don't see how you can reach there unless you use FI (if you can get it to tune) or you do some insane major engine modification, and followed with reliability issues.
good luck
good luck
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Well it was done on on 2 3gen GS in the states so it must be doable. I think will be lucky to hit 420 hp or slightly less. Greddy had a car in the states tuned with the e-manage. They have a roots style s/c that's perfect for the V8 GS. I'm talking to Greddy to see how I can get my hands on it and how to tune the car. I'm just wondering if it will be worth the cost when its all said and done.
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Passnu, was it you who had a harness up for sale? Can the 3GS V8's ECU be tuned? As you know, my GS460 is detuned to 322hp from the factory! And my A/F ratio is about 8 to 9 which is insanely rich!
Any hope for me? Especially with my catless exhaust system and cold air intake now! I expect to be running richer.
Any hope for me? Especially with my catless exhaust system and cold air intake now! I expect to be running richer.
Lexus Champion
Joined: Jul 2009
Posts: 3,277
Likes: 3
From: USA
I think you should just buy a BMW 550i with the 400hp twin turbo V8 and then add a chip to increase the boost.
I'm sure with turbos or engine replacement or something else you may be able to get the GS460 to 490hp. And I'm sure you can get better suspension.
However the car just lacks the chassis rigidity to drive like an E63 or an M5. GS460 chassis is not rigid - it flexes a lot.
I'm sure with turbos or engine replacement or something else you may be able to get the GS460 to 490hp. And I'm sure you can get better suspension.
However the car just lacks the chassis rigidity to drive like an E63 or an M5. GS460 chassis is not rigid - it flexes a lot.
Passnu, was it you who had a harness up for sale? Can the 3GS V8's ECU be tuned? As you know, my GS460 is detuned to 322hp from the factory! And my A/F ratio is about 8 to 9 which is insanely rich!
Any hope for me? Especially with my catless exhaust system and cold air intake now! I expect to be running richer.
Any hope for me? Especially with my catless exhaust system and cold air intake now! I expect to be running richer.
I would push a 3.5" intake like SRT did on the 2 gen
correct me if i'm wrong, but in order to use FI, you definitely need to tune the ECU? and again, correct me if i'm wrong, but lexus ECU can't be cracked? if that's the case, getting FI would be a waste of money and time unless the OP went with an aftermarket (or stand alone) ECU to control the A/F ratio and all the stuff that goes with it.
and factory ecu is also part of a big big problem even if you want to play with NA and boost power
executive matchup
Joined: Apr 2008
Posts: 5,771
Likes: 13
From: BC
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I just don't think any current Lexus engine would perform at that level, even the 5.0 liter. Maybe bore and stroke the 5.0 to 5.5 liters or so but not sure if that can be done!
Good luck, very ambitious project.
Another thought. Somehow fit the 5.0 liter and the hybrid powertrain and tune the batteries for more power.