HOME FORUM RULES CONTACT
     
   
   

Go Back   CLASS RACER FORUM > Class Racer Forums > Competition Tech


Reply
 
Thread Tools Display Modes
Old 09-30-2011, 09:25 AM   #11
randy wilson
Senior Member
 
Join Date: Jan 2007
Location: N/A
Posts: 882
Likes: 0
Liked 20 Times in 20 Posts
Default Re: rpms past peak

Thanks Charlie. I don't pretend to know all the answers, and I also realise guys who run minature pro stock, which is what comp is. We run our best shifting at 9,700. Peak is 9,300. It doesn't fall off much, but it starts it's downward trend. Our best pass to date is only .001 under the nhra index, so we are no threat. If I was younger, I would try a little harder then I do now days.Ha! But we have fun trying. We have ran .9 under the ss index, but that's a whole nother ball game. Thanks guy.
__________________
don,t have one
randy wilson is offline   Reply With Quote
Old 09-30-2011, 09:32 AM   #12
randy wilson
Senior Member
 
Join Date: Jan 2007
Location: N/A
Posts: 882
Likes: 0
Liked 20 Times in 20 Posts
Default Re: rpms past peak

Sorry. I meant to say I realise guys in comp are a bit smarter then most.
__________________
don,t have one
randy wilson is offline   Reply With Quote
Old 10-03-2011, 02:37 PM   #13
david ring
Senior Member
 
david ring's Avatar
 
Join Date: Feb 2003
Location: Oneonta.,NY
Posts: 889
Likes: 0
Liked 0 Times in 0 Posts
Default Re: rpms past peak

Quote:
Originally Posted by randy wilson View Post
Sorry. I meant to say I realise guys in comp are a bit smarter then most.
We can't be that smart-after all, we do run comp!
david ring is offline   Reply With Quote
Old 10-03-2011, 06:08 PM   #14
randy wilson
Senior Member
 
Join Date: Jan 2007
Location: N/A
Posts: 882
Likes: 0
Liked 20 Times in 20 Posts
Default Re: rpms past peak

HA! HA! Good one!
__________________
don,t have one
randy wilson is offline   Reply With Quote
Old 10-10-2011, 06:42 PM   #15
Rich67stang
Member
 
Join Date: Nov 2005
Location: Jackson, NJ
Posts: 304
Likes: 2
Liked 84 Times in 20 Posts
Default Re: rpms past peak

I have a 304 ci ford in ss/modified. The dyno sheet shows the motor making power @ 9900 rpm and never falls off. where should I shift and/or is the cam putting the power in no-mans land. Thanks
Rich67stang is offline   Reply With Quote
Old 10-11-2011, 09:10 AM   #16
randy wilson
Senior Member
 
Join Date: Jan 2007
Location: N/A
Posts: 882
Likes: 0
Liked 20 Times in 20 Posts
Default Re: rpms past peak

That's where I would think you would want it. That's way better then our motor for SS\Mod. I would keep going on the dyno and see. You probably have a really good piece.
__________________
don,t have one
randy wilson is offline   Reply With Quote
Old 10-13-2011, 04:56 PM   #17
MOTORSPORTS Innovations
Member
 
MOTORSPORTS Innovations's Avatar
 
Join Date: Dec 2009
Location: Hainesport, NJ
Posts: 123
Likes: 0
Liked 15 Times in 2 Posts
Default Re: rpms past peak

Powerglide - 800 (it's likely going to go to stall RPM)
3 speed - 600
4 speed - 400

The G-meter graph from the Racepak will be your tuning tool.
__________________
MOTORSPORTS Innovations
www.motorsportsinnovations.com

MOTORSPORTS Innovations is offline   Reply With Quote
Old 12-06-2011, 11:00 PM   #18
Jeff Lee
VIP Member
 
Jeff Lee's Avatar
 
Join Date: Jul 2007
Location: Anthem, Arizona
Posts: 2,766
Likes: 0
Liked 2 Times in 2 Posts
Default Re: rpms past peak

I only run Stock & Super Stock so excuse my ignorance. But what I see missing from this conversation is any reference to the type of transmission and gear ratios within the transmission. And I believe that is critical on the shift RPM.
__________________
Jeff Lee 7494 D/S '70 AMX
Jeff Lee is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:54 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © Class Racer.com. All Rights Reserved. Designated trademarks and brands are the property of their respective owners.