C6 Tranny

jayinpa · 11-15-2002, 11:08 PM

How good is a c6 tranny, how will it hold up behind a high rpm 289 with nitrous. How much to rebuild a c6? Any help will be much appreciated.

JAY

MEDIK418 · 11-16-2002, 04:43 PM

THe C6 is one of the toughest transmissions you will find. It's big though. There's one in the 82Gt outside behind a 351-C and it is still going strong after 3 years of teenaged lead feet. It doesn't do as well at high rpm as a c-4 but the engine we have doesn't run much past 6000. I've been told that 6 grand is about as high as you'd want to take one and it robs a lot of horsepower getting all that internal mass going and believe me everything inside is BIG. It will fit in a Fox body car though. There was a little hammer work to the transmission tunnel but not much.

11-15-2002, 11:08 PM	#1
jayinpa Registered Member Join Date: Jan 1999 Location: Greensburg,PA Posts: 75	C6 Tranny How good is a c6 tranny, how will it hold up behind a high rpm 289 with nitrous. How much to rebuild a c6? Any help will be much appreciated. JAY

11-16-2002, 04:43 PM	#2
MEDIK418 Registered Member Join Date: Mar 1999 Location: Amarillo, Texas, USA Posts: 780	THe C6 is one of the toughest transmissions you will find. It's big though. There's one in the 82Gt outside behind a 351-C and it is still going strong after 3 years of teenaged lead feet. It doesn't do as well at high rpm as a c-4 but the engine we have doesn't run much past 6000. I've been told that 6 grand is about as high as you'd want to take one and it robs a lot of horsepower getting all that internal mass going and believe me everything inside is BIG. It will fit in a Fox body car though. There was a little hammer work to the transmission tunnel but not much. __________________ 1986 four-eyed LX coupe, 358 Cleveland, Tremec TKO600/centerforce clutch, dish cut Probe forged pistons, comp cams hyd.roller cam, .579/.588@224/230, Edel.performer, 670 holley street avenger, CPR custom built long tubes, ported and polished 4bbl heads, manley valves, beehive springs, MSD peo-billet dist/MSD6AL, fluidamper, 5 lug conv. with 17x8 bullits there's more but it's still not finished yet. Oh, and the oldest boy is turning his 89 GT into a FFR cobra this next summer.

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