Convert from T-5 to C-4 any regrets ?

Rick 91GT · 04-09-2001, 07:28 AM

Just wondering who has done this and what you think after the swap? What set-up did you go with and how much did it cost?

I am considering this since my T-5 needs rebuilding(which isn't that big of a deal)but since I am going spend $300+ on parts and I am to 4:30 gears the C4 would be a lot better off the line at the track, and may hold the power a little better.

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Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

Tony Frank · 04-09-2001, 10:11 AM

My Dad and I just did this to his, which is now our drag car, which was an 82 mustang, We went from a world class T5 and switched to a Dynamic C4, with a 3000 stall. It was a fairly easy swap, but we had truouble getting a certified flywheel, we had to do some mods to the transmission support arm. we had to shorten the driveshaft too. but we have no regrets, it is still a fun car to drive. we have the fully manual reverse shift pattern. Excellent transmission, great quality, and beautiful shifts. Sorry no idea how much? i will ask though

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1985 Mustang GT 15,000 original miles, cam, intake, headers, carb, windage tray, you know the goodies

juiceman · 04-09-2001, 06:38 PM

the swap is easy and will help alot but there are some downfalls to it. for one performance automatic sells the whole kit with everything you need but its around 1000$ ( dont have exact price handy). my dynamic cost me 1450$ but you dont have to get one like that. i never heard of shortening the driveshaft for a c-4 conversion and i do them all the time.
the other peoblem is with 4.30 gears you will rev too high and will not be practical for street use. you will clear the quarter around 6400 rpm which is too high for a fairly stock fuel injected car . if these are not a problem for you then go with it. the right setup will only make you go faster and be more consistent.

Tony Frank · 04-10-2001, 01:24 AM

sorry about the driveshaft comment, i was thinking when i helped my friend with a turbo 350 in a jeep, we messed around with the driveshafts.

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1985 Mustang GT 15,000 original miles, cam, intake, headers, carb, windage tray, you know the goodies

04-09-2001, 07:28 AM	#1
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Convert from T-5 to C-4 any regrets ? Just wondering who has done this and what you think after the swap? What set-up did you go with and how much did it cost? I am considering this since my T-5 needs rebuilding(which isn't that big of a deal)but since I am going spend $300+ on parts and I am to 4:30 gears the C4 would be a lot better off the line at the track, and may hold the power a little better. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

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04-09-2001, 10:11 AM	#2
Tony Frank Registered Member Join Date: Feb 2001 Location: Brooklyn originally, but Grand Rapids now Posts: 309	My Dad and I just did this to his, which is now our drag car, which was an 82 mustang, We went from a world class T5 and switched to a Dynamic C4, with a 3000 stall. It was a fairly easy swap, but we had truouble getting a certified flywheel, we had to do some mods to the transmission support arm. we had to shorten the driveshaft too. but we have no regrets, it is still a fun car to drive. we have the fully manual reverse shift pattern. Excellent transmission, great quality, and beautiful shifts. Sorry no idea how much? i will ask though ------------------ 1985 Mustang GT 15,000 original miles, cam, intake, headers, carb, windage tray, you know the goodies

04-09-2001, 06:38 PM	#3
juiceman Registered Member Join Date: Jan 2001 Location: ny Posts: 197	the swap is easy and will help alot but there are some downfalls to it. for one performance automatic sells the whole kit with everything you need but its around 1000$ ( dont have exact price handy). my dynamic cost me 1450$ but you dont have to get one like that. i never heard of shortening the driveshaft for a c-4 conversion and i do them all the time. the other peoblem is with 4.30 gears you will rev too high and will not be practical for street use. you will clear the quarter around 6400 rpm which is too high for a fairly stock fuel injected car . if these are not a problem for you then go with it. the right setup will only make you go faster and be more consistent.

04-10-2001, 01:24 AM	#4
Tony Frank Registered Member Join Date: Feb 2001 Location: Brooklyn originally, but Grand Rapids now Posts: 309	sorry about the driveshaft comment, i was thinking when i helped my friend with a turbo 350 in a jeep, we messed around with the driveshafts. ------------------ 1985 Mustang GT 15,000 original miles, cam, intake, headers, carb, windage tray, you know the goodies