2004R question

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Kev7s
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2004R question

Post by Kev7s » Sat Apr 30, 2016 9:33 pm

I had a 200r4 Built a firebird I don't know much about this Trans, used a Ck preformce STREET-AND-STRIP-MASTER-REBUILD-KIT-WITH-BILLET-DRUM-AND-BILLET-SERVO it is on a 450-500 (estimation) hp 383 sbc. Keep have problem with 3-4 flare or sliping. Reclucthed Trans, and changed power valve but still have same problem. #-o need some advise .
Thanks please

Coloradoracer
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Re: 2004R question

Post by Coloradoracer » Sun May 01, 2016 3:36 am

Did you air test the clutches? Sounds like a leakage problem, possible bad or damaged seal, excessive clearance, or something hanging up
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Kev7s
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Re: 2004R question

Post by Kev7s » Sun May 01, 2016 6:58 am

Yes air test good all the pressure are good in all gears.

77cruiser
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Re: 2004R question

Post by 77cruiser » Sun May 01, 2016 9:21 pm

2 frictions or 3?
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Kev7s
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Re: 2004R question

Post by Kev7s » Sun May 01, 2016 9:40 pm

Jim not sure thinking two.

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Re: 2004R question

Post by 77cruiser » Sun May 01, 2016 10:31 pm

If so you may need to add one.
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Re: 2004R question

Post by TexasT » Tue Oct 11, 2016 10:45 pm

I would measure the clearance on that forth clutch pack to see where you are. If you are in the .030-.040 range I would cut the piston the thickness of the clutch plate you add between the steels(usually .080 but id measure that too so you are accurate).

Are you using a large .500 boost valve and a large rev/boost valve(.283 or so)
What are your pressures? At no tv and at full tv?
What code vb/gov are you using? Should be a tag on the pass side rear of the unit. Not a good idea to mix and match vb and governors.
What did you do to the forth accumulator? Different spring? Space the piston out? Block it all together?
Did you enlarge any holes in the vb plate?
Stall speed on your converter? Real high stall can affect how this unit shifts .

Lots goes into making a 2004r shift well.
Rich

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