CLASS RACER FORUM
Page 1 of 2 1 2
Show 40 post(s) from this thread on one page

CLASS RACER FORUM (https://classracer.com/classforum/index.php)
-   Stock and Super Stock Tech (https://classracer.com/classforum/forumdisplay.php?f=4)
-   -   RPM vs MPH (https://classracer.com/classforum/showthread.php?t=70054)

Dan Fahey 06-02-2018 01:05 PM
RPM vs MPH
 
What RPM are Stockers driving across the Traps and at what MPH?

Jason 06-02-2018 03:12 PM
Re: RPM vs MPH
 
More than what S/S and Modified did years ago.

GTX JOHN 06-02-2018 04:04 PM
Re: RPM vs MPH
 
Pretty Hard to answer that general a question because every combo
varies.

Our 340/318 Stocker even with Hyd. Lifters trap about 7200 to 7300 and
have for last 30 years or so (Since Valve Spring Pres. rule was changed).

Dan Fahey 06-02-2018 08:28 PM
Re: RPM vs MPH
 
Quote:
Originally Posted by GTX JOHN (Post 564381)
Pretty Hard to answer that general a question because every combo
varies.

Our 340/318 Stocker even with Hyd. Lifters trap about 7200 to 7300 and
have for last 30 years or so (Since Valve Spring Pres. rule was changed).
Thank you..
It is good information.
My LT1 iron head in PS touches 6400 rpm at 105 mph best.
Trying to figure best gear and tire for a 4100 lb car moving to Stock.

Figure a long stroke Olds 455 would have 4.56s.
Remember GTOs seem to like 4.33s
305 SBC Camaros guessing like 5.13s
Depending on story 283s would go 7800rpm.


Dan

HR9121 06-02-2018 10:21 PM
Re: RPM vs MPH
 
I would think you would want a 4.88 with that combo Dan.

Dan Fahey 06-02-2018 10:42 PM
Re: RPM vs MPH
 
Quote:
Originally Posted by HR9121 (Post 564402)
I would think you would want a 4.88 with that combo Dan.
Have 4.56s with 28 slicks

Mepprecht 06-02-2018 10:48 PM
Re: RPM vs MPH
 
Quote:
Originally Posted by HR9121 (Post 564402)
I would think you would want a 4.88 with that combo Dan.
That’s what the baby LT1 uses in my car. Cross at 6500 soooo

Larry Hill 06-03-2018 08:35 AM
Re: RPM vs MPH
 
I have a 9000 tach and about 1/3 of it is not used.

Dan Fahey 06-03-2018 09:05 AM
Re: RPM vs MPH
 
Quote:
Originally Posted by Mepprecht (Post 564406)
That’s what the baby LT1 uses in my car. Cross at 6500 soooo
The new cam in K/SA will be running 110-115 range.
To run 6500 rpm range 4.56s may be fine with taller tire.

Dan

X-TECH MAN 06-03-2018 01:01 PM
Re: RPM vs MPH
 
Quote:
Originally Posted by Jason (Post 564380)
More than what S/S and Modified did years ago.
Yepper.......You nailed it !


All times are GMT -4. The time now is 12:10 PM.
Page 1 of 2 1 2
Show 40 post(s) from this thread on one page

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.