need c4 info asap help!!

H

h82lose72

New Member

Sep 14, 2008

2

0

0

Jan 19, 2009

#1

• Jan 19, 2009

• #1

i have a 91 5.0 and i want to put a c4 behind it. i found a good tranny but im sure if its right for the car. do i need a10 1/2 bolt circle or 11 7/16 what about case or pan fill then theres the converter spline what is best and will it bolt right in or do i need driveshaft and crossmember mods? the car was a five speed. the tranny i found is from a 68 mustang. what is it?? also what flex plate do i but 28 or 50oz and 157 or 164 tooth??????????????

 

2

2KsilverGT

Founding Member

Apr 27, 2001

354

0

0

Collinsville Va

Jan 19, 2009

#2

• Jan 19, 2009

• #2

You can reuse the cross member and the drive shaft. You need to measure your bell housing because c-4's come in large bell housing and small. Large you can use the larger converter with a 164 tooth. A stock aod or aodE flex plate will work if its a large housing it's also a 50oz what you need. Get a good shifter also. Case fill means that your dipstick is mounted inside the case. Pan fill mounts on the side of the pan, in the pan itself. Make sure you count the splines before ordering a converter

 

white 89 GT

Member

Apr 3, 2003

281

0

17

Tacoma

Jan 19, 2009

#3

• Jan 19, 2009

• #3

You want a 70 or newer C4, case fill, small bell and then the 157 tooth 50 oz. flex.
And as with all trans questions I send everyone to click click racing forums.
General Click Click Tech - Click Click Racing Forums
Check out the stickys there for more C4 info, and why I say 70 or newer.

 

rd

Founding Member

Jan 12, 2000

3,316

63

109

Ocean Springs MS

Jan 20, 2009

#4

• Jan 20, 2009

• #4

If you are starting from scratch, either large or small will work.

My 79 Capri came stock with a C4 and had a large 168 tooth flexplate etc.

You need to match the balance to the engine, (50oz in your case), and then make sure you have the matching block plate (to locate the starter), flexplate converter and trans. The large flexplate is also used on the aod.

The 68 trans may work but valvebody upgrades will be easier with the later ones, as already noted.

 

SQUEEZE&STROKE

New Member

Jun 24, 2005

0

0

0

SOUTHERN CA

Jan 20, 2009

#5

• Jan 20, 2009

• #5

OP, where are you located?

And What mods are done to the car?