more c4 ?'s

66StangGuy · 07-27-2002, 04:42 PM

when i bought my mustang i found that the engine was an 85 block so im guessing the tranny may have ben changed as well.

Im pretty sure its a c4 though but id like to know the year. can anyone tell me where i can find the code on the tranny?

also what should i set the bands to? Right now there at stock settings according to my shop manual. 1 1/2 turns i think it was.
if its the orignal trans it has about 80,000 miles on it. Also i think im getting a lot of tranny slip from somewhere. When im on the freeway and at 5,000 rpm im going about 80-85 but i have 2.80 gears so shouldnt i go a lot faster at that rpm? What could be causing the slip and would it be related to the bands?

Also exactly does the kickdown lever do? when i set it to go about half throttle it wont downshift but i get a lot more power and throttle response and i thought it just tightend the bands?

sorry im making this so long. thanks for anyones help

Brandyn

Rev · 07-27-2002, 04:51 PM

Mine only slipped in 3 rd when I did a WOT 2-3 shift. No amount of band adjustment made any difference. For me it was that the high gear clutches were fried. Once that was fixed (rebuild), all that stopped. A shift kit helps here too, but only after the rebuild.

Rev

Gearhead999 · 07-28-2002, 05:05 PM

Band isn't going to affect the highway speed. The band you are adjusting is for 2nd gear.

66StangGuy · 07-29-2002, 03:51 PM

ok then if not that then why am i going so slow in 3rd at 5000rpm?

someone told me that was tranny slip but i dont know now.
i mean 80mph with 2.80's? shouldnt i go way faster. I might as well have 4.11's that would be nice.

Rev · 07-29-2002, 06:31 PM

3 rd gear clutches are slipping, at least that's my bet.

Rev

66StangGuy · 08-02-2002, 03:21 PM

theres no way to fix that other then rebuild?

Rev · 08-02-2002, 04:02 PM

That's what I had to do. Anyone else have another solution?

Rev

07-27-2002, 04:42 PM	#1
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	more c4 ?'s when i bought my mustang i found that the engine was an 85 block so im guessing the tranny may have ben changed as well. Im pretty sure its a c4 though but id like to know the year. can anyone tell me where i can find the code on the tranny? also what should i set the bands to? Right now there at stock settings according to my shop manual. 1 1/2 turns i think it was. if its the orignal trans it has about 80,000 miles on it. Also i think im getting a lot of tranny slip from somewhere. When im on the freeway and at 5,000 rpm im going about 80-85 but i have 2.80 gears so shouldnt i go a lot faster at that rpm? What could be causing the slip and would it be related to the bands? Also exactly does the kickdown lever do? when i set it to go about half throttle it wont downshift but i get a lot more power and throttle response and i thought it just tightend the bands? sorry im making this so long. thanks for anyones help Brandyn __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

07-27-2002, 04:51 PM	#2
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	3 rd gear clutches? Mine only slipped in 3 rd when I did a WOT 2-3 shift. No amount of band adjustment made any difference. For me it was that the high gear clutches were fried. Once that was fixed (rebuild), all that stopped. A shift kit helps here too, but only after the rebuild. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

07-28-2002, 05:05 PM	#3
Gearhead999 Registered Member Join Date: Sep 1998 Location: Oviedo, FL Posts: 992	Band isn't going to affect the highway speed. The band you are adjusting is for 2nd gear. __________________ "Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic

07-29-2002, 03:51 PM	#4
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	ok then if not that then why am i going so slow in 3rd at 5000rpm? someone told me that was tranny slip but i dont know now. i mean 80mph with 2.80's? shouldnt i go way faster. I might as well have 4.11's that would be nice. __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

07-29-2002, 06:31 PM	#5
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	3 rd gear clutches 3 rd gear clutches are slipping, at least that's my bet. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

08-02-2002, 03:21 PM	#6
66StangGuy Registered Member Join Date: Feb 2002 Location: Diamond Bar Posts: 258	theres no way to fix that other then rebuild? __________________ 66 mustang-292-Holley 4160-World Castings Windsor Sr.-Hooker super comp headers-MSD box & Coil.3.55 gears. B&M Z-Gate-Black leather racing seats with 4pt harnes.

08-02-2002, 04:02 PM	#7
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	That's what I had to do. That's what I had to do. Anyone else have another solution? Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe