shifting rpm

**mxlplx71** · 05-26-2010, 05:37 PM

when racing what rpm do you shift your m6? my car is stock.

**35th-ANV-SS** · 05-26-2010, 08:14 PM

I shift at about 6100 RPM. If I remember right, your peak power is at about 5,500 RPM. So Ideally, after you shift you want to be in the highest part of your powerband to maximize your car's potential.

**Spaz** · 05-28-2010, 11:26 AM

i shift at 6200 - 6500... but i have an ls6 that i dropped in...

**35th-ANV-SS** · 05-28-2010, 11:35 AM

I think redline on the LS1 is 6300 if I remember right. So after shifting at 6100 (when I start to shift) it probably is at about 6200-6250...hard to tell really without a digital read out or data logger.

**Spaz** · 05-28-2010, 11:42 AM

Originally Posted by 35th-ANV-SS

I think redline on the LS1 is 6300 if I remember right. So after shifting at 6100 (when I start to shift) it probably is at about 6200-6250...hard to tell really without a digital read out or data logger.

if i recall it is 6200... i know the tach can't keep up with 1st gear so i learned to shift by the sound of my exhaust... not always easy when the guy next to you is running open headers and passing you with his high 9 second car...

**Spaz** · 05-28-2010, 11:44 AM

Originally Posted by Spaz

if i recall it is 6200... i know the tach can't keep up with 1st gear so i learned to shift by the sound of my exhaust... not always easy when the guy next to you is running open headers and passing you with his high 9 second car...

6200 or the stock rev limiter... i'd have it bumped to 6500 just to be safe though...

**35th-ANV-SS** · 05-28-2010, 11:44 AM

My DYNO graph of my car had results up to 6260 RPM.

**Spaz** · 05-28-2010, 11:49 AM

Originally Posted by 35th-ANV-SS

My DYNO graph of my car had results up to 6260 RPM.

dyno tune??? they probably bumped the rev limiter up...

**35th-ANV-SS** · 05-28-2010, 11:57 AM

I don't think any shop would raise your rev limiter without telling you

**Too Fast** · 05-28-2010, 12:55 PM

And you don't want to rev it past 6200 with the stock pushrods, they can't take it. I shift near 6150, sometimes I bump the rev limiter just before I shift. I've found this gets the extra couple tenths at the drag strip, instead of shifting at any lower RPM.

**blackSS01** · 05-28-2010, 01:06 PM

6,500 rpms but mods in sig

**Zinergy** · 05-28-2010, 01:57 PM

Originally Posted by Too Fast

And you don't want to rev it past 6200 with the stock pushrods, they can't take it. I shift near 6150, sometimes I bump the rev limiter just before I shift. I've found this gets the extra couple tenths at the drag strip, instead of shifting at any lower RPM.

Correct, you really dont want to raise the rev limiter unless your running chromoly push rods. Stock limit on my T/A when i got a tune after headers/exhuast/lid was 625X

**mxlplx71** · 05-28-2010, 08:24 PM

the lifters rattle around 6grand

**BLK2KSS** · 05-28-2010, 08:52 PM

Man, I guess I shift a lil low... I try not to ever let it go too far past 6k at all. Then again I have the stock pushrods in until I get off my lazy ass and put in the comp cams chromoly ones I’ve got collecting dust in the garage.

**mxlplx71** · 05-28-2010, 09:02 PM

i try to shift before 6 but they still rattle alittle, im using mobil 1 5w30 syn
should i switch oil to 10w30? i used to use 15-50 in my turbo cars.

**Knight** · 05-29-2010, 03:54 AM

I'm right around the same of 6150-6200 or so. Every car is going to be a little different, so I'd say just practice with shifting at different rpms to see what gives you the better times. And because your stock I wouldn't go above 6000 rpm just to be safe.

**02blkws6** · 05-29-2010, 06:19 AM

Originally Posted by mxlplx71

the lifters rattle around 6grand

Stop posting false information.

My car for example is a stalled A4 with a cam and nitrous (hardened pushrods of course). My rev limiter is set at 6800. It puts out it's best track times by shifting at 6500. I've bounced the rev limiter on the bottle at the track by forgetting to take it out of 2nd gear after my burnout. I not only did I launch in 2nd gear on a 200 shot, but I hit the rev limiter too. I reviewed the log and was amazed to see 7950 since it revved so fast on the bottle. I was lucky that the stock bottom end didn't let go.

**mxlplx71** · 05-29-2010, 08:50 AM

Originally Posted by 02blkws6

Stop posting false information.

My car for example is a stalled A4 with a cam and nitrous (hardened pushrods of course). My rev limiter is set at 6800. It puts out it's best track times by shifting at 6500. I've bounced the rev limiter on the bottle at the track by forgetting to take it out of 2nd gear after my burnout. I not only did I launch in 2nd gear on a 200 shot, but I hit the rev limiter too. I reviewed the log and was amazed to see 7950 since it revved so fast on the bottle. I was lucky that the stock bottom end didn't let go.

what weight oil are you using? i think it might make a diff for me to switch.

**blackSS01** · 05-29-2010, 10:11 AM

Lifters shouldn't rattle around. I find that impossible to happen unless there is slack in the valvetrain. Now, a lifter may be on its way out and ticking

**mxlplx71** · 05-29-2010, 10:27 AM

it makes a rattleing sound every once in a while on a hard run, mybe the oil is too hot or too thin its new mobil 1 , i may take a qt or 2 out and put in alittle 15-50