C5

Barry Jackson · 01-16-2003, 04:04 PM

Have been getting info together for AOD to C4 swap such as converter, shifter etc. Then my tranny guy comes up a C5 and says he likes the parts, especially the valve body, better than C4 due to strength. Size etc. is almost identical to C4? Has anyone used a C5 in lieu of the 4?

Thanks as always for your input.

302 LX Eric · 01-16-2003, 04:18 PM

are you referring to the C6? I've never heard of a C5 before???

E

Barry Jackson · 01-16-2003, 04:32 PM

There was a C5 used for a few years in the 80's I believe. Mostly on the Econoline Vans and some trucks.

sn95gt19 · 01-16-2003, 05:05 PM

they also came in the 80's t-birds and cougars, i think that guy has lost his mind. theres a reason that they only put them in the 6 cylinders. i have heard nothing but bad about them. my 3.8 cougar used to eat at least 1 a year

gofastmercury · 01-17-2003, 02:23 PM

There is some good parts in that c5, but I'd take them out and put them in a c4. One of the cluch drums has an extra disc in it, thats good. But I think thats all you would want out of it.

gofastmercury · 01-17-2003, 02:34 PM

Just dug out the book.

looks like the major change is that the c5 has a lock up torque converter. This is a mechanical set up, it ingages when the rpm goes past a preset point.

This trans was only used 81 to 86, so they a little harder to find.

It think if the lockup can be avoided, it should work fine.

302man · 01-18-2003, 08:35 PM

The C5 is a better case than a C4. It has larger oil passages in it. Pan is deeper too. The Bell housing is about 1" deeper than a C4 due to its lock up converter. Therefore a C4 converter will fit a C5 but will not allow it to engauge the trany due to the depth or the Bell. Find a 157 bell and bolt it to your C5 trany,it will work.

01-16-2003, 04:04 PM	#1
Barry Jackson Registered Member Join Date: Oct 1998 Location: Pitts. Pa. USA Posts: 61	C5 Have been getting info together for AOD to C4 swap such as converter, shifter etc. Then my tranny guy comes up a C5 and says he likes the parts, especially the valve body, better than C4 due to strength. Size etc. is almost identical to C4? Has anyone used a C5 in lieu of the 4? Thanks as always for your input. __________________ 87 LX, 74 351W, performer plus intake, holley 750, vac sec., 78 prim. 80 sec., 50 pump: Wolverine cam 292-512, windsor heads, ported 3 angle valve, 4:10 rear, AOD, Lentech valve body w/ 10'' converter. No time slips yet!

01-16-2003, 04:18 PM	#2
302 LX Eric or '331 LX Eric' Join Date: Jan 1999 Location: Columbus, Ohio Posts: 2,142	are you referring to the C6? I've never heard of a C5 before??? E __________________ 1991 5.0 LX Coupe - 40,750 miles 331 cu. in. / Tremec 3550 / BFG Drag Radials 12.22 @ 114.31 mph - w/1.89 60'

01-16-2003, 04:32 PM	#3
Barry Jackson Registered Member Join Date: Oct 1998 Location: Pitts. Pa. USA Posts: 61	C5 There was a C5 used for a few years in the 80's I believe. Mostly on the Econoline Vans and some trucks. __________________ 87 LX, 74 351W, performer plus intake, holley 750, vac sec., 78 prim. 80 sec., 50 pump: Wolverine cam 292-512, windsor heads, ported 3 angle valve, 4:10 rear, AOD, Lentech valve body w/ 10'' converter. No time slips yet!

01-16-2003, 05:05 PM	#4
sn95gt19 motors done......woohooo Join Date: Mar 2002 Posts: 799	they also came in the 80's t-birds and cougars, i think that guy has lost his mind. theres a reason that they only put them in the 6 cylinders. i have heard nothing but bad about them. my 3.8 cougar used to eat at least 1 a year __________________ 95gt lazer red (98 cobra clone) Rice Haters Club Member #116

01-17-2003, 02:23 PM	#5
gofastmercury Registered Member Join Date: May 2001 Location: calgary alberta canada Posts: 366	There is some good parts in that c5, but I'd take them out and put them in a c4. One of the cluch drums has an extra disc in it, thats good. But I think thats all you would want out of it. __________________ 93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires. my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250 NEW(oct20/02)14.58@95mph 2.3 60 ft corrects to:13.86@100 66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver 12.3@110 @ 4000ft 1.69 60 ft corrects to:11.69@115

01-17-2003, 02:34 PM	#6
gofastmercury Registered Member Join Date: May 2001 Location: calgary alberta canada Posts: 366	Just dug out the book. looks like the major change is that the c5 has a lock up torque converter. This is a mechanical set up, it ingages when the rpm goes past a preset point. This trans was only used 81 to 86, so they a little harder to find. It think if the lockup can be avoided, it should work fine. __________________ 93LXcopcarSOLD14.3@96 @ 4500ft 2.02 60ft on street tires. my 67 ranchero NOT A 390 ANY MORE! 460! 3.70's cast manifolds, comp cams 262H, performer, 750DP 100K out of 79 F250 NEW(oct20/02)14.58@95mph 2.3 60 ft corrects to:13.86@100 66 merc comet351w, isky roller 600 lift 268/260@.050, vic jr. 700DP, 5000stall, 4.56's c-4, 3400lbs with driver 12.3@110 @ 4000ft 1.69 60 ft corrects to:11.69@115

01-18-2003, 08:35 PM	#7
302man Registered Member Join Date: Jul 1999 Location: INDIANAPOLIS Posts: 404	The C5 is a better case than a C4. It has larger oil passages in it. Pan is deeper too. The Bell housing is about 1" deeper than a C4 due to its lock up converter. Therefore a C4 converter will fit a C5 but will not allow it to engauge the trany due to the depth or the Bell. Find a 157 bell and bolt it to your C5 trany,it will work. __________________ old S trim combo 10.13@ 135 New YS combo = 680RWHP (no times)