Shift point question - Ford Mustang Forums : Corral.net Mustang Forum
 
LinkBack Thread Tools Display Modes
post #1 of 7 Old 04-25-2003, 02:44 AM Thread Starter
Registered User
 
Trader Feedback: (0)
Join Date: Jan 2003
Location: Tahlequah
Posts: 81
Shift point question

I've got a quick question. Please take a look at my sig and tell me at what r.p.m. I should shift at. I've been shifting at 5300 and I feel like I'm shortchanging myself. How much r.p.m. is safe with my fresh motor w/o breakage


'85 GT h/c/i still slow w/ 13.30's
'85 Broncho ride
'85 Yota wannabe rock crawler
Ever get that itchy "I didn't wipe so great feeling"?
foxbodyordeath is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 04-25-2003, 08:02 PM
Registered User
 
BuzzHaze's Avatar
 
Trader Feedback: (0)
Join Date: Oct 2002
Location: Ottawa, Canada
Posts: 71
At the track, try shifting around 5700-5800 RPM and see if your ET perks up. You should be able to launch pretty hard providing you can warm up those Hoosiers. I launch at ~5000 RPM with ET Streets and get a 1.75 60ft.

Make sure to follow the proper break-in procedure for your new engine before all this.


Buzz Haze

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
BuzzHaze is offline  
post #3 of 7 Old 04-28-2003, 08:55 PM
Registered User
 
Trader Feedback: (0)
Join Date: Apr 2003
Location: Lake St. Louis Missouri
Posts: 131
i have a 1992 automatic convert. with a shift kit, and i shift it at about 5800 or so, but my car is slow

Red 1992 Mustang LX Vert. 5.0
Cobra R's, Sln wing, 2.5 cowl hood,
MAC CAI, MAC shorties headers, Mac h-pipe, mac cat-back, underdrive pulleys, AOD with shift kit, gears, electric fan 130 amp alternator.
1hot50 is offline  
Sponsored Links
Advertisement
 
post #4 of 7 Old 04-29-2003, 12:00 AM
Registered User
 
Jayber's Avatar
 
Trader Feedback: (17)
Join Date: Apr 2000
Location: Willow Spring NC
Posts: 6,153
1hot lower your shift points to 5200-5300 and you will run quicker with your mods. Been there done that.
Jayber is offline  
post #5 of 7 Old 04-29-2003, 04:26 AM
Registered User
 
Trader Feedback: (0)
Join Date: Mar 2002
Location: Wahiawa, Hawaii
Posts: 1,329
If you've dynoed your car, check out your torque curve. Shift right above your highest torque reading so you're rpms will fall into the torque range. Make sense?
ROADWARRIORSVT is offline  
post #6 of 7 Old 04-29-2003, 02:01 PM
Registered User
 
cleanLX's Avatar
 
Trader Feedback: (0)
Join Date: Jun 2000
Location: Phoenix AZ. by way of Fredericton, NB, Canada
Posts: 1,649
no it does not make sense.
if that were that case we'd be shifting our stockers at 3500 rpm or less.

foxbodyordeath,
try different shift points, I'd start with 5600 and work up and down from there with your mod's.

1hot50,
I agree, try 5200 or handy.

Mike H.
Duffee 306 and E7te's, Buddy Rawls cam. 368rwhp/363rwtq.

Last edited by cleanLX; 04-29-2003 at 02:04 PM.
cleanLX is offline  
post #7 of 7 Old 04-29-2003, 03:49 PM
Registered User
 
redrumpony's Avatar
 
Trader Feedback: (1)
Join Date: Oct 2002
Location: Crestview, Fl.
Posts: 1,202
shift points

Try increasing shift points from 5400 up, by increments of 200 RPM. ET is a function of hooking up, MPH is a function of power. Increase your shift points until MPH starts to decrease. Then, drop back to the previous shift point that gave you the best MPH.

Do you have an aftermarket tachometer? The stock tach is hardly accurate. My buddies stock tach reads 7000 RPM's when the autogage reads 6000 RPM's. Just food for thought.....James
redrumpony is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forums : Corral.net Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome