SHINER

iTrader: (18)

What RPM’s should I shift at while racing to get the most power outta each gear on an M6?Which RPMS correspond with the following gears? ALso If Im going like 70 and I want to launch off that speed on the highway what gear should I down shift to?

bmfcamaro

iTrader: (1)

depends on valvetrain. stock 6200rpm or lower. 4th was a nice downshift on the freeway before the 4.10's

01MMMZ28

going 70mph, stick it in 3rd.....best roll race for me is 45mph and 2nd gear. I got my shift light set at 6000rpm.

SHINER

iTrader: (18)

last time i dropped it in to 4th going 70mph and it sounded like i blewmy rear end but it didnt and the tires screached and the ABS inop or the LOw Trac light came on i dont know what happened.....it was embaressing

mrbobo

You ask good questions...you can answer most of them yourself. I'm stock internals, 3.42 M6- have my shift light set at 5800 rpm.

Go out and run it thru the gears. Take note of your speed, in each gear - at your shift point. Write it down if you have to. Memorize it. Fast forward... your rolling down the hiway at 70 mph, and want to run it....give it some gas as you push in your clutch (rev matching), bang 3rd gear... and be gone with your bad self!

From a roll, this is my ballpark rule of thumb:
1st- 0 -35
2nd 35-55
3rd 55-90
4th 90-120
5th 120+
6th don't use for racing

SHINER

iTrader: (18)

rev to WHAT RPM and drop it into 3rd or 4th? 3rd is kinda low to go into from 70 dont ya think?

mrbobo

Doesn't have to be exact RPM, doesnt have to be at all..is just better if you do.. ok ballpark 4K..optimum is to rev to the same RPM you think your going to jump to when you downshift.

70 mph, 3rd is low. Is it too low ? I define "too low" as being- if you drop to a gear and your RPM goes above your redline/shiftpoint. Stock internals, 70mph,3.42, M6- it won't be above your redline/shiftpoint. 2nd gear would be "too low". Disagree ? Prove it! Go run your car thru the gears and look at your speed + RPM when you shift at redline. We are talking about racing , not a leisurly cruise. At 70 mph - sure,you could shift to 4th or 5th - to pass a woody station wagon, but it would be a handicap in a "race".

If both our cars were equal, doing 70mph down the hiway: we both hit it the same time: you drop to 4th, I drop to 3rd - you will see my tailights. Look at at some dyno sheets if you don't understand why.

Hope this helps!

SLOZ

I went into 3rd all the time at 70, it will "hit" in the rear if you don't rev match as mentioned earlier, and will bark the tires, but 3rd will get you moving. I would do like mrbobo said, and go out and memorize the prm range for each gear.

SHINER

iTrader: (18)

Im sorry im not understanding i go out and memorize what shift point? well i always shift at around 5100 for 1st and 2nd and probably 4800 for 3rd...i dunno...like if im going 70 and i put the clutch it itl drop to 1000 RPMs then I give it gas with the clutch in to lets say around 4700 RPM then slowly let off the clutch....?...thats double clutching and i though that you didnt have to do that with our cars becuase of synchronizers..?**** im lost...sorry guys.lol.....thanks for being patient with me..

01MMMZ28

If I roll race from 70, I stick it in 3rd, it will be revving high but not tooo bad, 3 honks and the stangs and ricers see the taillights. Simple as that.... It's not that bad, remember the LS1 likes to rev high, that's were the legendary LS1 top end comes into play. It makes it's peak power higher in the rpm band, peak torque is up there also.