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Gt750 block pulling inserts

Posted: Fri Feb 23, 2024 8:56 am
by AMXsteve
Just had crazy idea. As the main head bolts are quite thick could a machinist make inserts with a shoulder that would install from below head with 1/2" internal threads so we could just use an old head as a block puller. These could be cnc fairly easy and help a world of gt owners. Or am I just crazy. My machine shop has two of my engines with no hope of getting blocks off.

Re: Gt750 block pulling inserts

Posted: Sat Feb 24, 2024 6:59 am
by jabcb
Have not done this myself. Have seen rebuild topics where they use a flat plate to pull the head off.
A simple design & pretty easy for a shop to make.

Am busy. Will look for the info when I can if someone else doesn’t provide the links.

Re: Gt750 block pulling inserts

Posted: Sat Feb 24, 2024 10:33 am
by AMXsteve
jabcb wrote: Sat Feb 24, 2024 6:59 am Have not done this myself. Have seen rebuild topics where they use a flat plate to pull the head off.
A simple design & pretty easy for a shop to make.

Am busy. Will look for the info when I can if someone else doesn’t provide the links.
Oh I have seen the block pulling plates but to ship one or build one would be costly. I just thought this idea would be easy to ship and help gt750 owners worldwide.

Re: Gt750 block pulling inserts

Posted: Sat Feb 24, 2024 9:55 pm
by jabcb
Not sure what exactly you have in mind. If you make a sketch someone might be able to provide some insight into how well it would work.

Re: Gt750 block pulling inserts

Posted: Tue Mar 05, 2024 10:12 am
by AMXsteve
Something like this

Re: Gt750 block pulling inserts

Posted: Tue Mar 05, 2024 5:56 pm
by jabcb
Those look simple enough. So how would you use them?

Re: Gt750 block pulling inserts

Posted: Wed Mar 06, 2024 2:11 am
by AMXsteve
Pull the head and install between block and head. Re bolt head to block and use 7/16 bolts to push down on studs lifting block off.

Re: Gt750 block pulling inserts

Posted: Wed Mar 06, 2024 4:06 am
by jabcb
Interesting.

That could work for the T500 as well. The GT750 & T500 nuts look similar but have different part numbers.

I have a T500 restoration in the queue. Some PO used sealant of some sort where the base gasket should be. So removing the cylinders will be a PITA.

Re: Gt750 block pulling inserts

Posted: Thu Mar 07, 2024 10:06 am
by Alan H
Be careful to lift them a flat at a time, or the head might be distorted.

Re: Gt750 block pulling inserts

Posted: Mon Mar 18, 2024 3:37 am
by jabcb
Are you going to have them made?