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post #1 of 19 (permalink) Old 11-03-03, 09:12 PM Thread Starter
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Lexus shows V8-powered IS 430 prototype

November 4, 2003

Lexus shows V8-powered IS 430 prototype

Las Vegas, Nevada - Lexus unveiled a one-off example of its IS 300 luxury sport sedan powered by a 4.3 litre V8 engine from a Lexus GS 430 on Monday. Lexus commissioned Rod Millen Special Vehicles (RMSV) to build the car. The resulting "IS 430" was completed last week at Millen's shops in Huntington Beach, California.

"We wanted to explore the performance possibilities of the IS 300," said Lexus Group Vice President and General Manager Denny Clements. "The marriage of our 4.3 litre V8 with the sporty IS 300 creates a classic muscle car."

The V8 engine was paired with a Getrag 6-speed manual transmission and lightweight flywheel, which drive the rear wheels through a stronger limited slip differential and GS 430 driveline components.

TEIN springs and 16-way electronically adjustable shock absorbers work with the original IS 300 front suspension in addition to selected GS 430 rear suspension components, which help ensure durability against the higher torque of the 4.3-litre V8. Large, sticky Michelin Sport Cup tires on 18-inch Speed Star SSR alloy wheels put the power to the ground.

A similar approach was taken with the cooling system and brakes. A GS 430 radiator was fitted to provide ample cooling for the high-output engine. Large Brembo brakes with vented, cross-drilled rotors and four-piston aluminum calipers are there to arrest the newfound acceleration and speed of the IS 430.

"The standard IS 300 is a robust and well balanced sport sedan, so we thought it would respond well to the additional power of the Lexus V8 engine," said Rod Millen, president of RSMV. "With a package of complementary modifications, it has exceeded our expectations."

"Fitting the 4.3-litre V8 and six-speed manual transmission to the IS 300 was fairly straightforward," said Millen. "The larger challenge was to develop an electronic interface that would allow the V8 engine to work with the manual transmission and IS 300 body - something it was never designed to do."

Lexus also wanted to discover the potential of what might be termed a "next generation" in-vehicle entertainment system. Lexus turned to its premium audio systems partner, Mark Levinson. The result is a 20-speaker/24-channel, 720-watt audio/video system using a proprietary DVD video player and removable 6.5-inch wide-screen video display.

To complete the package, Chip Foose from Foose Design was employed to give the IS 430 a more aggressive yet functional appearance. Foose used subtle upgrades including a Rhys Millen Racing front lip spoiler and side skirts with a black over red exterior color scheme that emphasizes the wedge profile of the tightly drawn IS body. A mesh grille and gray headlamp treatment is used up front, and the taillights and rear badging are modified for a simpler look at the rear. Dual exhaust tailpipes help improve performance.

The Lexus IS 430 is a one-off vehicle. There are no plans for a production version.


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Last edited by RiceBoy; 11-03-03 at 09:18 PM.
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post #2 of 19 Old 11-03-03, 09:16 PM
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I read this on OT, and was impressed with the performance numbers... easily putting out 300 lbs or torque, and i think it was 340 horsies.

2 comments though...

-- ugliest paintjob evar. well, not *evar*, but pretty friggin' ugly.

-- why on earth would anyone need a 20-speaker stereo in a mid-size sedan?
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post #3 of 19 Old 11-04-03, 12:35 AM
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i donno but the rear looks liek a dodge neon with altezzas.



but if it were one solid color witht he stock 5 star rims that is430 would be a beast for sure. also looks better with the single muffler.

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post #4 of 19 Old 11-04-03, 12:40 AM
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post #5 of 19 Old 11-04-03, 12:57 AM
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Re: Lexus shows V8-powered IS 430 prototype

Quote:
Originally posted by RiceBoy
There are no plans for a production version.
too bad.
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post #6 of 19 Old 11-04-03, 01:20 AM
 
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horrible paint job, but the numbers make up for it.
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post #7 of 19 Old 11-04-03, 01:52 AM
 
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(rominl's gonna love this one!)

Honestly I was just thinking about that because, they just put the GS300 engine in the IS when it first came out. Also I was thinking that the V6 and V8 had to be pretty similar to fit into the same GS. So why not do that on the IS also?

Well I'm glad to see that it is possible, although the paint scheme is absolutely horrible.

But the numbers that car could put up would probabbly be faster than the GS430's 0-60 in 5.8, so pretty quick. So that I like.
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post #8 of 19 Old 11-04-03, 03:31 AM
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i'm curious where those pics where taken at b/c there's no way in hell that's in vegas!

interesting engine, great numbers.....disgusting paint job...and i REALLY can't stand the tail lights....even the front looks like it could use some work.........however, i really think that it's just that this car is getting kinda old in design...needs an update...
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post #9 of 19 Old 11-04-03, 07:20 AM
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I like the paint scheme just don't like the choice in colors.
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post #10 of 19 Old 11-04-03, 07:45 AM
 
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To complete the package, Chip Foose from Foose Design was employed to give the IS 430 a more aggressive yet functional appearance. Foose used subtle upgrades including a Rhys Millen Racing front lip spoiler and side skirts with a black over red exterior color scheme that emphasizes the wedge profile of the tightly drawn IS body. A mesh grille and gray headlamp treatment is used up front, and the taillights and rear badging are modified for a simpler look at the rear. Dual exhaust tailpipes help improve performance.



Way to go dork! Take a great piece of mechanics and make it look like garbage.
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post #11 of 19 Old 11-04-03, 11:50 AM
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i wish i would have gotten an IS rather than my TL-s
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post #12 of 19 Old 11-04-03, 02:22 PM
 
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bad ass car, but the paint job has to go, and the wheels are meh.
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post #13 of 19 Old 11-06-03, 07:22 PM
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<tr valign="middle"><td align="center"><table border="1" bordercolor="white" height="145" width="375" background="http://www.acurainspired.com/gallery/data/b53b3a3d6ab90ce0268229151c9bde11/722_p21284.jpg" cellspacing="0" cellpadding="0"><tr><td align="right" valign="bottom"><font face="Times Roman" size="1" color="white">View my <a href="http://www.acurainspired.com/gallery/dlisting.php?cid=23" target=_blank><i>"shizzle-licious"</i> </a>pix</font></td></tr></table></td></tr>
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post #14 of 19 Old 11-18-03, 01:39 AM
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Quote:
Originally posted by danfortner
(rominl's gonna love this one!)

Honestly I was just thinking about that because, they just put the GS300 engine in the IS when it first came out. Also I was thinking that the V6 and V8 had to be pretty similar to fit into the same GS. So why not do that on the IS also?

Well I'm glad to see that it is possible, although the paint scheme is absolutely horrible.

But the numbers that car could put up would probabbly be faster than the GS430's 0-60 in 5.8, so pretty quick. So that I like.
hahha i like this reply. yeah i know about this project long before anyone. it's been a long while for this project actually. they did a pretty good job with the project, heck rmm they probably don't know shit about it, lexus provided all the technical help anyway

about the speed, the car is going to be fast. the is430 done by tte in europe, with the 5 speed auto from the gs430, it does 5.6 0-100km (0-62mph), so with the new 6 speed, light flywheel, it should be close to 5.

now i am wondering what if there is a is430 with modded engine would do

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post #15 of 19 Old 11-18-03, 01:42 AM
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Quote:
Originally posted by Bochenek
i wish i would have gotten an IS rather than my TL-s
reason being?

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