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Stock car gear ratio for Thunder Mountain, Marion Center, PPMS


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#1 sle21

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Posted 26 April 2018 - 10:18 AM

I have a 604 crate, 2900lb stock car.  Any suggestions on gear ratios for these tracks?  Trying to keep it under 7000rpm


Edited by sle21, 26 April 2018 - 11:54 AM.




 

#2 yenko1

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Posted 26 April 2018 - 06:37 PM

pms 567-543



30

#3 Racer17L

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Posted 26 April 2018 - 11:20 PM

pms 567-543


Agreed.


#4 BRC27

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Posted 27 April 2018 - 05:16 AM

Thunder Mountain and Marion Center I think you would do well with a 6.83 or a set of 700's if you run taller tires.




#5 714d

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Posted 27 April 2018 - 06:31 AM

May be a bit much for thunder mountain. Been a while since we ran a 358 in a stock car, but I was thinking we ran 6.66. Like I said, its been a while though. We ran 7.00 at the bird and we definitely didnt run the same gear at both tracks.


#6 greaseball

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Posted 27 April 2018 - 08:08 AM

WE ran 6.50 at thunder mountain. and6.66at marioncenter and hummingbird and kept the rpm about 7200 hope that helps you.




#7 Foz20J

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Posted 27 April 2018 - 11:42 AM

Marion center 6.20 or 6.33. Ive ran both there and won heat races and features with a 604 crate engine and car weighing 2950.

"a man with momentum and nothing to lose is a dangerous person" - Jason Fosnaught

#8 sle21

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Posted 27 April 2018 - 12:13 PM

thanks for the help guys




#9 Wayne McDonald

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Posted 28 April 2018 - 08:56 PM

Thunder Mountain and Marion Center I think you would do well with a 6.83 or a set of 700's if you run taller tires.

me thinks you will be turning about 12000 rpm if you run that gear at thunder mountain..




#10 BRC27

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Posted 30 April 2018 - 11:53 AM

Wayne McDonald....I turn 6500 at Hummingbird with 6.50's and 6800 at Thunder Mountain with the same gear, but I run a 406 with 600hp hooked up.  Father in law runs a 377 with a 6.83 gear there.  Turns 8k. This fella is talking about a 604 crate with 400hp.  Better put the gear to it!   




#11 Wayne McDonald

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Posted 30 April 2018 - 10:58 PM

I cant see a 604 crate running any more than 620 at thunder mountain..it will turn 7000 there on that gear




#12 tdietz10

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Posted 01 May 2018 - 06:27 AM

I ran my 6.14 at thunder mountain and it wasnt enough 6.33 would be good, ran 6.50 at Marion center and Mercer and turned it harder then you want but probably have to to run good. 5.43 at ppms I dont really see you needing more then a 6.50 anywhere I have been





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