I wouldn't apply heat... Risky... I used a 3 jaw puller.. in retrospect I though that a custom made puller would work well too .. on the same principal as the installer tool.. if you got.an autozone by you check out part number 27019.. and you can rent it from them.. for My installer I got a 7/16 x20 3 ft rod from My local hardware store then used washers and a nut to press on.. hope this helps.
How are you trying to tame it off? Do you know it doesn't come off like a typical sbc one? I install a long bolt down into the crank bolt hole and use the puller against that. You can't put the center of the puller on what you woukd think the crank is. The inside of the hub is flat withbonky a small hole in it for the crank bolt to pass through it.
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