im takin the 4l60e out to change a rear main seal, and for the life of me cant get the bots to budge. ive tried penetrating oil, and they just act like they are gonna strip... this is frusterating the hell outta me, and i dont know if there is enough room under the damn thing to even get a drill down there to drill em out. please help.

 

With the starter out you have better access and heat the converter bolts up they got probably loctite on them.

 

Use the correct size tool. It's either an 8mm allen head or a 15mm bolt- use a six point socket with a bolt. If it's an 8mm do not use a 5/16.

Heat the bolt head with a torch. With oxy/acetylene heat it 90 seconds to two minutes depending on the tip size. With propane or MAP gas heat it 10 to 15 minutes.

Make sure the socket/allen socket stays straight with the bolt. When the flexplate turns it will put it at and angle and it will strip. Make sure it doesn't turn.

It helps to use a wobble extension and a long 1/2 drive extension to reach the front of the engine. Then you can put a ratchet on the crank pulley and pull the two together.

https://ls1tech.com/forums/attachmen...l-img_0143.jpg
https://ls1tech.com/forums/attachmen...l-img_0142.jpg

 

whew, the heat wrench did help get them outta there, but the bolts are trash now. i cant believe GM would use such a poor design. looks like im upgrading to a 6 point bolt!

thanks a bunch guys

 

For future reference, if they totally round off, a blast with an air hammer and chsiel bit in a counterclockwise direction will loosen them.

 

just take out the starter, get a 3/8 impact with a uni joint and an 8mm. ive took my trans out 3 times in the past 3 days with no probs and 160k on the clock before i took it out