Hello Stangnet!
I've noticed the C4 in my '67 vert is starting to take a while to engage when cold. I realize that this may mean a rebuild to replace all the worn junk inside. Not sure of the history of the tranny, but suspect it has never been rebuilt.
Right now, I have the numbers-matching 289 bored to a 302, but I believe the only upgrade is the cam. Not too familiar with driveline. Sounds beefy, but not much power. Low to mid 200's HP maybe? Very soon, I plan to replace the exhaust manifolds with headers, and put a new kit on the existing engine until i get up to around 350 HP.
My question is, should I spend the money rebuilding the C4 if that's what it needs, or should I just replace it with a C6? I know a threshold exists where I should move up to the heavier duty tranny.
Please advise. Thank you!
I've noticed the C4 in my '67 vert is starting to take a while to engage when cold. I realize that this may mean a rebuild to replace all the worn junk inside. Not sure of the history of the tranny, but suspect it has never been rebuilt.
Right now, I have the numbers-matching 289 bored to a 302, but I believe the only upgrade is the cam. Not too familiar with driveline. Sounds beefy, but not much power. Low to mid 200's HP maybe? Very soon, I plan to replace the exhaust manifolds with headers, and put a new kit on the existing engine until i get up to around 350 HP.
My question is, should I spend the money rebuilding the C4 if that's what it needs, or should I just replace it with a C6? I know a threshold exists where I should move up to the heavier duty tranny.
Please advise. Thank you!