y5mgisi
1 ton status
You are kicking ass man! Can't wait for a ride along video!
CK5
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89 V2500 Burb- Camping rig
- Thread starter socoinslo
- Start date
socoinslo
1/2 ton status
I introduced the new motor to its new home on Saturday but didn't have any time to do anything else. Im glad that the sun will be up later now, so I will be able to work on it after work.
I had a little time to work on pulling the 350 on Sunday. I got the Core support removed and that was about it.
I had a little time to work on pulling the 350 on Sunday. I got the Core support removed and that was about it.
y5mgisi
1 ton status
Won't be long now!
Sweet! Now go ahead and embarrass me by getting it running in a few weeks.
Sweet deal. Wish I had done a ls swap.
socoinslo
1/2 ton status
I finally got the motor, trans and TC out yesterday after work. Time to start cleaning things up and installing the TNA crossmember. Im hoping to get the new motor in there by this weekend... but I do have some drinking to do this weekend so we'll see.
y5mgisi
1 ton status
Good job!
socoinslo
1/2 ton status
Getting the motor in has been going much slower than I had hoped but thats just the way this going to go. I came across a strange problem when I tried to mate the th400 and the lq9. The torque converter will not bolt up to the flywheel. I have read in many places that this should not be a problem. I have that with the th350 you have to elongate the flexplate holes inward or get a th400 torque converter. With my combination I would have to elongate the holes on the flexplate outwards in order to match up with the torque converter.
Has anyone ran across this? Maybe I have just been misreading, but I was not expecting this.
Has anyone ran across this? Maybe I have just been misreading, but I was not expecting this.
Sounds like you have the flex plate for the 4L60E, what you need is the flex plate, crank adapter and bolts from a 6.0 that had a 4L80E , this will give you the correct crank pilot depth and converter bolt pattern. Even if you elongate the holes on your flex plate the converter will not be piloted into the crank due to the difference in offset
socoinslo
1/2 ton status
Well its strange because the flexplate that is on there is the dished flexplate which I thought indicated that it was the 6.0 4l80e flexplate. I have the crank adapter on there and the torque converter is seating in there nicely but the bolt pattern is off. Is it a bad idea to elongate the holes on the flexplate outwards?
socoinslo
1/2 ton status
I thought that the flywheel for the 4l60e was not dished? Or does that have nothing to do with anything?
It is a very bad idea to modify your flywheel. If you create a stress riser in a rotating part under load it does not take long to come apart.
socoinslo
1/2 ton status
Then I guess I need to figure out if I should replace the flywheel or the torque converter
y5mgisi
1 ton status
In fairness, I agreed that it's not a good idea to elongate the w
Holes. But many people do it on this swap and I have yet to see a failure. I had to elongate my holes for my th400 but I don't remember which way they went! I know that a company makes a flex plate just for this. I think it's tci.
Holes. But many people do it on this swap and I have yet to see a failure. I had to elongate my holes for my th400 but I don't remember which way they went! I know that a company makes a flex plate just for this. I think it's tci.
y5mgisi
1 ton status
Getting the motor in has been going much slower than I had hoped but thats just the way this going to go. I came across a strange problem when I tried to mate the th400 and the lq9. The torque converter will not bolt up to the flywheel. I have read in many places that this should not be a problem. I have that with the th350 you have to elongate the flexplate holes inward or get a th400 torque converter. With my combination I would have to elongate the holes on the flexplate outwards in order to match up with the torque converter.
Has anyone ran across this? Maybe I have just been misreading, but I was not expecting this.
I had to do that. They're were about half a hole off, took about 10min with a carbide burr.
Just because you modify it doesn't mean it will fail. But, screw it up and you get a very spectacular failure. If you are already spending thousands in the motor and tranny, spend 100 more on the right flex plate.
socoinslo
1/2 ton status
Thanks for the link! It still seems like I have an odd arrangement here. I guess I have a dished 5.3 flexplate... the tc to flexblate bolt pattern is still wierd. Everything that I have read says that the bolt pattern difference should be the opposite of what I have.
I elongated the holes on the flexplate with a dremmel and they line up perfect now. I decided to give it a try since it seems like either way my flexplate was not going to work. I am a little nervous about weakening the plate to be honest tho. Sure would suck to be out in the middle of nowhere and have the flexplate explode on me. Damnit!
I certainly would not be the first to go with the modified flexplate though. What to do?
I elongated the holes on the flexplate with a dremmel and they line up perfect now. I decided to give it a try since it seems like either way my flexplate was not going to work. I am a little nervous about weakening the plate to be honest tho. Sure would suck to be out in the middle of nowhere and have the flexplate explode on me. Damnit!
I certainly would not be the first to go with the modified flexplate though. What to do?
socoinslo
1/2 ton status
Muddy, which way did you have to open the holes? In towards the center or out?
Even if you elongate the holles, if the flex plate is a dished 4L60E type you still need to address the converter pilot to crank interface
