Is raising the Rev Limiter/shift points a bad ID!

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07-24-2009, 06:50 PM

#11

Gene K

5th Gear Member

Join Date: Jun 2007

Location: Decatur AL USA

Posts: 2,176

The rods are the same as the NA Cobra rods (6800 rpm factory) and are fine at rpm without power adders. Many roadrace guys are turning these rods over 7000 rpm.

My car has hundreds of dragstrip passes with 6750 rpm shift points and 7200 rpm limiter setting. The valvetrain will not be happy with you if you take it to 7200 rpm under load. That said I have had no valvtrain issues with 6750 rpm powershifts.

PS the Shelby GT, Bullitt and 2010 Mustang GT all use the same basic engine and are factory set at 6500 rpm.

07-25-2009, 08:57 AM

#12

mygt500

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Join Date: Nov 2006

Location: Detroit Rock City!

Posts: 15,618

Quote:

Originally Posted by Nuke

The stock rev limiter setting is 6250 RPM. Brenspeed reset mine to 6800 with their tunes but I brought it down to 6500. Although many claim that our engines can handle 6800 RPM, I'm not a track guy so I'm comfortable at 6500. 7000 RPM is too high for my comfort zone.

My rev limiter is set at 6800 too Nuke and my tuner insists that is just fine. I had an increase in HP all the way to 6500 rpms and you want a little play for when you shift esp in boosted applications

Quote:

Originally Posted by Lifter583

Either manual shifting or set your shift points by setting them manually on your tuner. The reason the limiter is set higher, when you are within 200 rpms of the limiter point the computer begins to shut things down, so when it hits the limiter it doesnt just slam off.

so true tuner explained it the same way pretty much

Quote:

Originally Posted by drbobvs

I would set the shift points to anywhere between 6250 and 6500 rpm. Rev limiter is fine at 6800.

I agree