Flywheel on 78
Thread Starter
Intermediate
Joined: Dec 2014
Posts: 27
Likes: 0
Flywheel on 78
I have a 78 that I thought maybe the selonoid was going. I removed the starter and noticed a couple (2) teeth on the flywheel were a little worn. Still thinking that the starter or solenoid was bad, I had it tested and they tested out perfect. I came home turned the engine ever so slightly, re-installed the starter and it fired right up. SO I am thinking that my starting problem were the two worn teeth on the flywheel.
Can anyone tell me how difficult it is to replace a flywheel on a 78 automatic? And also lead me down the path on the cost of getting it done at a shop?
Thanks.
Can anyone tell me how difficult it is to replace a flywheel on a 78 automatic? And also lead me down the path on the cost of getting it done at a shop?
Thanks.
Melting Slicks
Joined: Jun 2011
Posts: 3,116
Likes: 598
I have a 78 that I thought maybe the selonoid was going. I removed the starter and noticed a couple (2) teeth on the flywheel were a little worn. Still thinking that the starter or solenoid was bad, I had it tested and they tested out perfect. I came home turned the engine ever so slightly, re-installed the starter and it fired right up. SO I am thinking that my starting problem were the two worn teeth on the flywheel.
Can anyone tell me how difficult it is to replace a flywheel on a 78 automatic? And also lead me down the path on the cost of getting it done at a shop?
Thanks.
Can anyone tell me how difficult it is to replace a flywheel on a 78 automatic? And also lead me down the path on the cost of getting it done at a shop?
Thanks.
So you need to remove the drive shaft, remove crossmember bolts, remove your starter, remove transmission from the engine. undo the transmission cooling lines. You will also need to allow the exhaust to hang freely or remove portions to allow the crossmember to be lowered. Remove torque converter from the flexplate. Once the transmission is out of the way you will need to prevent the engine from turning while you remove the flexplate from the engine. If you have never done something like this it will seem like a lot of work. I also had a few bad teeth on my flywheel I was lucky it didn't stop there very often. Once in about 3 years. I have since replaced the auto with a manual so the problem is gone.
8th Gear
Joined: Feb 2019
Posts: 8
Likes: 0
From: Vista, CA
Starter grinding at engine start up
A couple weeks ago the ignition key cylinder began sticking in the start position causing the starter to grind after the engine started. I was having to quickly turn the key counter clockwise to the on position to stop the starter grind. Yesterday I replaced the ignition key cylinder and with the battery disconnected the key seems to snap back to the on position when you let go of the key. However, with the battery connected the starter still grinds a bit at engine start. Any thoughts are appreciated! Could it be something other than the starter I hear grinding?
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
you pulled up an old thread that has nothing to do with your issue. best to start a new thread so we don't think you are asking how to change a flywheel. but since you mentioned it, remove the starter. get a socket that fits the balancer nut and slowly turn engine and check all teeth on flywheel. now get a new starter.
these are superior to the orig gm starters. i built GM starters for several years. i have 10 in the basement and i won't use them. your key switch. it is not a switch. unless a 68. it is an actuator for a rod that turns the switch. switch is attached to the column a few inches down from key. replace it. this is a 71. probly all th same 69 to 82. but not sure.
