Brought to you in part by:

.

Shop Eastwood for your Auto Restoration Needs!


  Mustangsandmore Forums
  Ford Racing
  Manual Shifting a C-4 "Green-Dot"

Post New Topic  Post A Reply
profile | register | preferences | faq | search

UBBFriend: Email This Page to Someone! next newest topic | next oldest topic
Author Topic:   Manual Shifting a C-4 "Green-Dot"
65coupei6
Gearhead

Posts: 415
From: S.F., CA
Registered: May 2000

posted 01-28-2001 04:28 PM     Click Here to See the Profile for 65coupei6   Click Here to Email 65coupei6     Edit/Delete Message   Reply w/Quote
How do you manually shift a 65-66 C4 to hold it in second longer before it shifts to third? It is a stock tranny with a 65 valve body and has a shift kit installed.

IP: Logged

Just Jim
Gearhead

Posts: 381
From: So Cal
Registered: Feb 2000

posted 01-28-2001 05:37 PM     Click Here to See the Profile for Just Jim     Edit/Delete Message   Reply w/Quote
Start out in 1st,shift to 2nd at desired high RPM,after trans shifts into 2nd,put shifter back in low and you can hold 2nd to desired RPM and then shift it to high.This will work if racing,but not just to hold in 2nd if not racing.Don't think the trans will be too happy,but that's how we did it in the old days.Best thing you could do is find and install a '67-'69 valve body which will let you hold it in 2nd.

------------------
"Just Falcon Around"
1962 Falcon 351W
1958 Morris Minor 289

IP: Logged

Moneymaker
Administrator

Posts: 19704
From: Lyons, IL, USA
Registered: May 99

posted 01-28-2001 11:42 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
That's how you do it and the trans does not mind one bit. It doesn't know that it's not supposed to up shift when you manually put it back in low. FoMoCo engineers designed it that way.

------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

IP: Logged

mellowyellow
Gearhead

Posts: 5668
From: So. Fl.
Registered: Aug 2000

posted 01-29-2001 07:01 AM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
Wasn't one of the "real" reasons for that design was to allow one to start out in 2nd in slippery conditions?

IP: Logged

n2oMike
Gearhead

Posts: 1547
From: Spencer, WV
Registered: Jan 2001

posted 01-29-2001 07:50 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
The early C4 trans has D1 and D2. Following the shifter pattern up starting in Low, it goes L, D1, D2, N, R, P.

Putting the shifter in D1 starts the car out in first gear. D2 starts the car in 2nd. The owners manual states D2 is for slippery conditions where less torque to the rear wheels is desired.

The manual also states that to hold the trans in 2nd gear... after it shifts to 2nd, place the shifter in Low until it's time to upshift, then place it back in Drive.

My car used to be an automatic when I bought it at age 15... oh, bout' 18 years ago... and lasted that way for only one year before the 4-speed bug hit.

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/motorcitymustang/cmml/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

IP: Logged

65coupei6
Gearhead

Posts: 415
From: S.F., CA
Registered: May 2000

posted 01-29-2001 05:03 PM     Click Here to See the Profile for 65coupei6   Click Here to Email 65coupei6     Edit/Delete Message   Reply w/Quote
Will a 67-69 valve body make that much of a difference? Is it an improvement? I don't race but there's always room for improvement.

IP: Logged

n2oMike
Gearhead

Posts: 1547
From: Spencer, WV
Registered: Jan 2001

posted 01-29-2001 06:34 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
The newer valve body is just different, not necessarily an improvement. The older 64-66 valve body is actually more flexible since it allows the car the option of taking off in 2nd gear.

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/motorcitymustang/cmml/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

IP: Logged

Moneymaker
Administrator

Posts: 19704
From: Lyons, IL, USA
Registered: May 99

posted 01-29-2001 11:24 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
There is no mechanical advantage to the 67-69 valve body over the 64-66 units. The trans will still have a manual 2nd gear and shift out of second at a pre determined (according to the governer) RPM with the 67-69 unit. There are no shift kits available for the 64-66 valve bodies.

------------------
Alex Denysenko Co-Administrator and Moderator NHRA/IHRA/SRA member
Fleet of FoMoCo products
Moneymaker Bio
US Class Nationals link

IP: Logged

All times are ET (US)

next newest topic | next oldest topic

Administrative Options: Close Topic | Archive/Move | Delete Topic
Post New Topic  Post A Reply
Hop to:

Contact Us | Mustangsandmore Front Page

Copyright 2003, Steve LaRiviere. All Rights Reserved.


Ultimate Bulletin Board 5.47d

Amazon Honor System Click Here to Pay Learn More

[Build a free Mustangsandmore.ws Home Page!]

[About M&M][Acronyms][Calendar][Chat][Classifieds] [Members' Pics] [M&M Mug Shots]

[ Mustangsandmore.com Bookstore] [Mustangsandmore.com T-Shirts][Tech Articles]