Re: Re: re: Performannce Spec Link

From: Gary Shook (gary.shook@wcom.com)
Date: Tue Sep 14 1999 - 14:20:36 EDT


just becuase the peak torque occurs at 4800rpm doesn't mean it doesn't make
280 Lb/ft of torque at 2800 rpm...
that's why I don't like to rely on just peak.. gotta look at "the area under
the curve"

>Look at where the peak torque is developed!!! The 4.7 makes 5ft/lbs LESS
>and that peak is 2K rpm above the peak on the 318.. I'd sure like to know
>where they gained that extra second in the 0-60 times, maybe running down a
>5% grade?
>_______________________________________
>Jon Smith-------Raleigh,NC-------ICQ: 9720504
>'95 318 auto CC 4x4 3.90 31" A/T's
>JBA headers, dual glasspack, 14x3 FABM
>F&B Stage I TB, !EGR, MSD 8.5's, self-moded intake
>MP SBEC, 180 degree thermo, ASP crank pulley,
>16" Hayden elec. fan 0-60mph in 6.3
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>----- Original Message -----
>From: <jbe@micron.net>
>To: DML <dakota-truck@buffnet.net>
>Sent: Tuesday, September 14, 1999 11:36 AM
>Subject: DML: re: Performannce Spec Link
>
>
>> Some interesting numbers on the motor trend web site for performance
>> specs.
>> Take a look at the Jeep grand cherokee limited at the bottom of the page
>> they have
>> numbers for the 5.2liter (318 same as in the Dak) and then the new
>> 4.7liter engine
>> same as in the dak this year. From the numbers Motor trend got the new
>> engine got
>> better bas mileage and blew away the old 318 for performance?
>>
>> How do you do that with a 4.7L engine which develops less power and also
>> at higher
>> RPM's? Can the tranny shifting make that big of a difference? with the
>> new multispeed tranny?
>>
>> Model/Year
>> Jeep Grand Cherokee Ltd '97
>> Price (Base/Tested)
>> $33,790/$37,399
>> Power train Configuration
>> 5.1999998 V-8/4A/4wd
>> Power (hp/rpm) 220/4400
>> Torque (lb-ft/rpm) 300/2800
>> 0-60 (sec) 8.2
>> 1/4 Mile 16.3/82.9
>> City/Hwy. EPA 14/18
>> ****************************
>> Model/Year
>> Jeep Grand Cherokee Ltd. '99
>> Price (Base/Tested)
>> $33,890/$36,655
>>
>> Powertrain Configuration
>> 4.6999998 V-8/4A/awd
>> Power (hp/rpm) 235/4800
>> Torque (lb-ft/rpm) 295/4800
>> 0-60 (sec) 7.2
>> 1/4 Mile 15.6/86
>> City/Hwy. EPA 15/20
>>
>> Ja
>>
>>
>>
>>
>



This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 12:16:47 EDT