GS350 vs IS350 engine differences?
GS350 vs IS350 engine differences?
Are the engines for the GS350 and IS350 identical? 2GR-FSE is the engine number for both cars. Is that correct? I'm trying to find compatibility for engine parts/internals.
Lexus Test Driver
Joined: Nov 2005
Posts: 1,209
Likes: 3
From: IL
Lexus Test Driver
Joined: Nov 2005
Posts: 1,209
Likes: 3
From: IL
Edmunds.com says 306hp on the IS. The difference could be how the intake and exhaust is designed in each car. The GS could by shy a few ponies in comparison due to an exhaust that yields a quieter sound or something.
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the gs350 is 303 hp and the is350 is 306 because of the flux capacitor connected to the intake side check under your spare tire you will find a flux capacitor under there...i never looked but if any of you do please take a pic and post
Lexus Test Driver
Joined: Apr 2002
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From: Ft. Lauderdale, FL
Are they calibrated differently at all? If you test drive both back to back, the IS350 moves out with urgency. Even taking the added weight into effect, I was surprised at how much less responsive the GS350 feels.
Racer
Joined: Dec 2009
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From: Texas
Be sure you are running premium gas and have the ECT switch in the performance mode.
Lexus Fanatic
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From: Waiting for next track day
Lexus Connoisseur
Joined: Mar 2001
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From: USA
Yes they are identical. The 3 hp difference between the GS and IS is negligible. The physical difference is that the GS' upper airbox piece is shaped a little differently than the IS' for clearance. Otherwise, the lower portion of both airboxes are identical.
