At what MRP to shift gear when racing /

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At what MRP to shift gear when racing /

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At what MRP to shift gear when racing / - 7/21/2004 11:25:17 PM

SCARFACE

Posts: 518
Joined: 3/19/2004
From: Bakersfield, CA
Status: offline
I know this question has being probably asked before but at what mrp is the ideal # to shift when racing??? is before you hit the red line??? or at the red???

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RE: At what MRP to shift gear when racing / - 7/21/2004 11:29:15 PM

mdvaldosta

Posts: 8826
Joined: 9/2/2003
From: United States
Status: offline
Try to find a dyno graph for a car like yours with similar mods, then try to find the best powerband that will deliver the most average power. Usually its best to shift about 500rpm above peak power, but thats not always applicable. With your snake, assuming stock heads and cams, I'd take it to redline in 1st, and shift at 6500 rpm in 2nd and 3rd. Of course your rear gear ratio will make a difference as well, as numerically higher gears will narrow your operating rpm band.

Its not rocket science but having a good plan and trial and error work best.

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RE: At what MRP to shift gear when racing / - 7/21/2004 11:54:59 PM

WS6speeDemon

Posts: 739
Joined: 4/18/2004
Status: offline
in what car? my powerband starts aroun 4000 rpm. I shift at 5800. Sometimes I push it a little more, when you start getting slow to redline you start to lose a bit of power, so I usually shift before.

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RE: At what MRP to shift gear when racing / - 7/22/2004 12:07:49 AM

SCARFACE

Posts: 518
Joined: 3/19/2004
From: Bakersfield, CA
Status: offline
thanks for the help!!! I'll keep trying, and testing

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RE: At what MRP to shift gear when racing / - 8/2/2004 11:46:44 PM

Redline03GT

Posts: 938
Joined: 7/22/2004
From: Houston
Status: offline
I have come to believe that you should shift approximately 0.5 seconds after your rpms reach the redline, so that you get the most out of your top end powerband. Experiment and find out i guess. Good luck.

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RE: At what MRP to shift gear when racing / - 8/6/2004 9:25:58 PM

04mustang

Posts: 837
Joined: 4/22/2004
From: Florida
Status: offline i shift right @ or a lil after 5500 cause by the time im shifting im hitting about redline.

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RE: At what MRP to shift gear when racing / - 8/16/2004 8:41:46 AM

ONE BAD GT

Posts: 373
Joined: 8/7/2004
Status: offline Never ever go into redline. I had a 95 mark viii with a 4.6 dohc and broke two roller rockers staying in the red too long.

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