What Will Be The IS-F Final HP Number? - Lexus ISF / IS-F / LFA / LF-A Forum
View Poll Results: What Will Be The IS-F Final HP Number?
Under 400 HP: Lexus Will Miss The Mark 1 1.82%
Between 400hp to 410hp 3 5.45%
Between 410hp to 420hp 29 52.73%
Between 420hp to 430hp 8 14.55%
Between 430hp to 440hp 6 10.91%
Between 440hp to 450hp 4 7.27%
Between 450hp to 460hp 2 3.64%
Between 460hp to 475hp 1 1.82%
Between 475hp to 490hp 1 1.82%
Over 490HP: Lexus Will Lead The Category 0 0%
Voters: 55. You may not vote on this poll

Reply
 
Thread Tools Display Modes
post #1 of 12 Old 07-21-2007, 02:35 AM Thread Starter
mainliner
 
Join Date: Apr 2007
Posts: 30
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
What Will Be The IS-F Final HP Number?

http://www.autospies.com/news/How-Mu...ut-With-17730/


49How Much Horsepower Will The New IS-F Debut With?
Agent009 submitted on 07/16/2007 Official Bell & Ross Timestamp: 3:04 PM
from: www.autospies.com
[75] user comments | category: Misc News

Print this Page | Digg It | del.icio.us

As the IS-F debut draws closer Lexus has wisely chosen to keep the actual horsepower of the high performance motor a well kept secret, mentioning only a figure somewhere in excess of 400 hp.

A few months ago Car and Driver reported that the 5L V8 had made as much as 483 hp in an (at the time) IS 500 mule. In April Road & Track also ran an article about future Japanese sports cars, where it said that Toyota was developing a new Supra and Lexus IS 500. Both would be powered by the same 5 liter V-8 putting out 450 hp and 383 lb-ft of torque in the Supra and detuned slightly for the IS 500 (IS-F). So many sources seem to indicate that Lexus may lead both the RS4 and the M3 and slightly trail the Mercedes-Benz C63 AMG in overall horsepower.

With this taken into consideration, Lexus also repeatedly says the car will have more than 350 lb-ft. Given that the 4.6L motor produces 367 lb-ft, it stands to reason an out and out performance motor could have substantially more hp/liter than the 4.6L motor and a slightly less torque peak that a higher horsepower peak would imply.

Now if Lexus only gets the same 82.6 hp/liter from the 5L motor that it has wrung from the LS 460's 4.6L V8, the car would then produce around 413 hp. But this seems a bit overly conservative since the RS4 and new V8 M3 are both producing similar power with less displacement. Reason would dictate that Lexus should have a similar hp/liter ratio if the engine can maintain a similar redline.

So what is the $64,000 question? How much power will the new IS-F actually have when it comes to market? Give us your answer below, and of curse feel free to comment as well.


What Will Be The IS-F Final HP Number?
Under 400 HP: Lexus Will Miss The Mark
Between 400hp to 410hp
Between 410hp to 420hp
Between 420hp to 430hp
Between 430hp to 440hp
Between 440hp to 450hp
Between 450hp to 460hp
Between 460hp to 475hp
Between 475hp to 490hp
Over 490HP: Lexus Will Lead The Category
mainliner is offline  
Sponsored Links
Advertisement
 
post #2 of 12 Old 07-23-2007, 07:56 PM
ride450
 
Join Date: Jul 2007
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A wild guess. 430 hp, 390 lb-ft tq.
ride450 is offline  
post #3 of 12 Old 07-29-2007, 06:26 PM
is-fan
 
Join Date: Jul 2007
Posts: 32
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Guestimate

My estimate/quess is 437 hp, and I'll let you try to figure out how I came up with that number My torque estimate is 376 foot-pounds.

Does the person with the closest guess win a prize? LOL
is-fan is offline  
 
post #4 of 12 Old 07-29-2007, 08:45 PM
dascrow
 
Join Date: Apr 2007
Posts: 191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hmm.. Thats a good idea! I just created a poll so everyone can vote!
dascrow is offline  
post #5 of 12 Old 07-29-2007, 10:28 PM
jruhi4
Super Moderator
 
Join Date: Jul 2007
Location: Miami, FL
Posts: 41
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The poll is missing the 420-430 hp option, which is the one that would get my vote.
jruhi4 is offline  
post #6 of 12 Old 07-30-2007, 12:42 AM
dascrow
 
Join Date: Apr 2007
Posts: 191
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fixed! Thanks for pointing that out!
dascrow is offline  
post #7 of 12 Old 08-05-2007, 09:03 AM
Flipside909
Administrator
 
Flipside909's Avatar
 
Join Date: Apr 2007
Location: California
Posts: 1,126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
415hp per the product specialist at Taste of Lexus Irvine today. I will confirm this and torque numbers shortly.



Flipside909 is offline  
post #8 of 12 Old 08-06-2007, 10:27 PM
Flipside909
Administrator
 
Flipside909's Avatar
 
Join Date: Apr 2007
Location: California
Posts: 1,126
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Update:

The 415 HP figure is not correct. The final output will be released by Lexus very shortly.



Flipside909 is offline  
post #9 of 12 Old 08-09-2007, 08:50 PM
symbol-f
Member
 
Join Date: May 2007
Posts: 77
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I am going to say between 410-420hp and that's my final answer..
symbol-f is offline  
post #10 of 12 Old 10-04-2007, 03:35 PM
Wer3Y
 
Join Date: Oct 2007
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
400-410 maybe!
Wer3Y is offline  
Sponsored Links
Advertisement
 
Reply

  Lexus ISF / IS-F / LFA / LF-A Forum > Lexus F News & Polls > Lexus F Polls

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Lexus ISF / IS-F / LFA / LF-A Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode


Forum Jump

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome