New Hughes 25HD BPO

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Old Dec 26, 2023 | 02:54 PM
  #1  
herkguy's Avatar
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From: Minnesota
New Hughes 25HD BPO

my new converter came today.

for those that have the newer HUGHEs does this look correct?
it’s now a bolt on vs threaded connections.

I thought I had read they had switched to the smaller case and went with this style.
just want to confirm.

Also if you have one of these is there a preferred bolt length in 3/8 #8 grade?
it did not come with the as advertised hardware…🙄
thanks
Eric
Old Dec 26, 2023 | 03:04 PM
  #2  
66SportCoupe's Avatar
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Eric All the new ones are bolt and nut type. Get a set of ARP converter bolts and nuts
Old Dec 26, 2023 | 03:08 PM
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herkguy's Avatar
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Roger… and because I forgot the photo..duh….here it is




Old Dec 26, 2023 | 04:11 PM
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olds 307 and 403's Avatar
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Supposedly it has to do with the available cores. I just installed a TCI 2000 to 2200 stall converter with the same setup. It bolted my flexplate with out issue other the 330 crank pilot diameter.
Old Dec 27, 2023 | 01:09 AM
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herkguy's Avatar
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Originally Posted by olds 307 and 403
Supposedly it has to do with the available cores. I just installed a TCI 2000 to 2200 stall converter with the same setup. It bolted my flexplate with out issue other the 330 crank pilot diameter.

are the crank pilot holes tight with these?

what size bolts did you use?
Old Dec 27, 2023 | 09:01 AM
  #6  
olds 307 and 403's Avatar
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No, the 330 cranks seem to be smaller in the pilot area. It came with 3/8" x 3/4". I ended using 1" bolts and needed 2 washers to fill the gap the torque converter was away from the flexplate. There was room for three for sure, didn't want to jam it tight against the pump.
Old Dec 27, 2023 | 11:11 AM
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herkguy's Avatar
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Originally Posted by olds 307 and 403
No, the 330 cranks seem to be smaller in the pilot area. It came with 3/8" x 3/4". I ended using 1" bolts and needed 2 washers to fill the gap the torque converter was away from the flexplate. There was room for three for sure, didn't want to jam it tight against the pump.
ok, mine did not come with bolts.
I’ll check my crank pilot Hole against the converter tip.
the instructions said I might need to enlarge the holes for 7/16 bolts.
I guess I should have some washers on hand also and maybe 1 1/4 bolts length.
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