Transmission Part-1986 Chevrolet P30 (454, 7.4L) TH475 Transmission

Tiny
GULFSTREAMSUNSPORT
  • MEMBER
  • 1986 CHEVROLET
  • 7.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 89,500 MILES
I am trying to identify this part from a TH475 trans on an 86' Chevy P30 (454). Could you please let me know what this piece is? I thought it might be an Accumulator Piston but all I find are metal one piece parts for that and this is a plastic part and it has two pieces. I have attached a photo.
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Sunday, September 27th, 2015 AT 2:47 PM

10 Replies

Tiny
CJ MEDEVAC
  • EXPERT
CAN YOU RE-SIZE YOUR PIC A LITTLE SMALLER? IT'S NOT SHOWING AT ALL.

INSTALL IT BELOW YOUR ANSWER BOX UNDER "ADD IMAGE"

THE MEDIC
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Sunday, September 27th, 2015 AT 3:24 PM
Tiny
GULFSTREAMSUNSPORT
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Does this work? I reattached using the jpg format.
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Sunday, September 27th, 2015 AT 3:32 PM
Tiny
GULFSTREAMSUNSPORT
  • MEMBER
Here is the other photo as well.
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Sunday, September 27th, 2015 AT 3:33 PM
Tiny
GULFSTREAMSUNSPORT
  • MEMBER
Wow. Keep posting before adding photo. Hope this works! LOL
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Sunday, September 27th, 2015 AT 3:34 PM
Tiny
CJ MEDEVAC
  • EXPERT
DOES THIS DO ANYTHING FOR YOU?

http://www.shinseiauto.com/japanese/transtar/usgmth40004.pdf

THE MEDIC
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Sunday, September 27th, 2015 AT 4:00 PM
Tiny
GULFSTREAMSUNSPORT
  • MEMBER
No. I've looked at that one and a dozen others and have had no luck whatsoever. Any other ideas or clue as to what that is?
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Sunday, September 27th, 2015 AT 4:00 PM
Tiny
CJ MEDEVAC
  • EXPERT
HOW 'BOUT A PLASTIC ONE OF THESE?

http://www.ebay.com/itm/ALUMINUM-Direct-Clutch-Accumulator-Piston-Fits-400-475-3L80-Transmissions-/111620619550?hash=item19fd1b7d1e&vxp=mtr

THE MEDIC
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Sunday, September 27th, 2015 AT 5:24 PM
Tiny
GULFSTREAMSUNSPORT
  • MEMBER
Yeah I have seen those all over the place but what about the 2nd piece that this part has in it? Is that included with this accumulator piston or is that smaller piece something else that I need which fits into the piston?
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Sunday, September 27th, 2015 AT 6:57 PM
Tiny
CJ MEDEVAC
  • EXPERT
I LOOKED AT THE THREE VIEWS BELOW THE BIG PIC IN MY LINK

YOUR "BIGGER PART" LOOKS TO BE HOLLOW INSIDE, DOES THE LITTLE PART GO INSIDE OF IT, SO THAT IT LOOKS LIKE "VIEW 2" IN THE LINK?

I'M KINDA A MANUAL TRANNY KINDA GUY, BUT I'M PRETTY GOOD AT RESEARCHING STUFF! I WAS UNABLE TO FIND ANYTHING IN "PRODEMAND" SO I JUMPED ON THE WEB. WE TRY TO PLEASE!

THE MEDIC
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Sunday, September 27th, 2015 AT 7:12 PM
Tiny
2CARPROS MIKE
  • ADMIN
GulfstreamSunsport
Sep 28, 2015.

I think that is the right part. Thanks!
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Tuesday, September 29th, 2015 AT 11:03 AM

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