Help I Need a New Tranny (4T65EHD) - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-26-2008, 09:10 PM   #11
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to Crod01

and to clear the record here, Intense DOES NOT increase the shift pressures ( line pressures) in the Trans. they ONLY change the shift times in Performance Shift Only. I have HP Tuners looking at the stock Bins VS the Intense Bins there is no change
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Old 03-26-2008, 09:22 PM   #12
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Quote:
Originally Posted by crod101
By the way, the PCM was upgraded to an Intense Performance PCM. The tranny tech said that it caused the line pressure to increase to much for the stock tranny. I 'm not sure about that. But anyway, I found a remanufactured tranny from Jasper for $1967 + $400 for core. Does anyone have any experience from them? They say their tranny is much stronger than stock. Any ideas?
I'm looking at a trans from them as well. 3yr. 100k mile warranty is pretty dang good as well.
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Old 03-27-2008, 02:38 AM   #13
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Here'* the link to Japser'* Tranny:
http://webapp.jasperengines.com/webcat/catalog.asp
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Old 03-27-2008, 02:41 AM   #14
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Sorry the links works only if you logon.

Here'* the specs:
1. The pump drive shaft seal is replaced with a solid Teflon one to
improve lock-up durability, and to prevent lock-up piston slipping or
chattering.
2. The valve body is remanufactured and tested before being installed
on the transmission for accuracy of calibration. The case is tested
with a controlled volume of fluid before the valve body is installed.
3. The converter is remanufactured on a state-of-the-art converter
aligner/welder which keeps hub run out to .010 in. or less (OEM is
.015 in.---within 50% of the O.E.M. allowed tolerance.) to prevent
bushing wear, front seal leaks, and vibrations.
4. All bushings and thrust surfaces are finished to 15 RA or less to
prevent wear and failure.
5. Updated NEW 4th clutch hub with hardened splines to prevent
shearing of soft splines causing no 4th.
6. 100% NEW shift solenoids to prevent wrong gear start, delayed
engagements, no shift concerns.
7. 100% NEW TCC PWM solenoid because they are hard to clean and like
to stick-- this is to help prevent soft lockup, no lockup, or staying
in lockup issues.
8. 100% NEW Force Motor solenoid--- to prevent line pressure
instability causing harsh or soft shifts and/or delayed or no reverse
problems.
9. 100% replacing of converter support bearing--- to prevent failures
causing sleeve damage and transmission failure.
10. 100% replacement of pump slide pivot pin (high wear item)-- to
prevent slide seal leaks causing pump slide malfunction.
11. NEW pressure switch manifold--- to prevent wrong gear starts and
delayed engagement.
12. Input Clutch housing thrust bearing (high wear item) is
replaced-- to prevent failures causing metal contamination, noise,
and end play problems.
13. Pressure Regulator Valve, Torque Signal Regulator Valve, and
Actuator Limit Valve vacuum check--to prevent por line pressure rise,
soft shift, and wrong gear starts.
14. Case, Valve Body, Pump, and Channel Plate are checked for
flatness---to prevent cross leaks that cause low pressure binding,
and unit failures.
15. 100% replacement of Reaction Sun Gear Drum and 1-2 Support Drum
Bushings (high wear item) ---to prevent planetary failure and sprag
failures.

The Price Is: $1967.00
Core Deposit For This Unit Is: $400.00
Skid Deposit For This Unit Is: $100.00
Sold On An Exchange Basis w/Jasper Receiving Old Unit As A Core.
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Old 03-27-2008, 02:53 AM   #15
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If you intend to continue modifying the car, I would seriously consider ordering a trans or at least the upgrade parts for the rebuild from INTENSE or ZZP.

BTW, I have not heard the same glowing recommendations of Jasper...some of the local guys around Columbus have reported serious issues with theirs.
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Old 03-27-2008, 09:09 AM   #16
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i asked my trans guy about remanufactured trans
he told me they are junk they use old parts that could
allready have 100,000 miles on it and their putting it
in the trans. also my trans guy said your better off
staying with your own trans for the rebuit. he has done
alot of trans for myself and freinds. never had a problem
with anything he has done for us.
i never heard anything good about jasper (engines&trans)
around here.
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Old 03-27-2008, 11:01 AM   #17
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[size=18]I talked to a tech from Jasper and he told me that they don't use old parts. Besides, it comes with a 3 Year Warranty. Also, the dealer'* price for a manufactured tranny is $2,200. I think the tranny from Jasper is much stronger.

I'm still not sure because I'd be putting about $2,600 into a car that'* worth about $3,000. I know the engine'* in good shape but still. How about a used one from a junk yard? Would a different year ' 98 or '99 fit? How about from another car, Buick, Oldsmobile or GTP?
[/size]
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Old 03-27-2008, 11:18 AM   #18
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Quote:
Originally Posted by crod101
[size=18]I talked to a tech from Jasper and he told me that they don't use old parts. Besides, it comes with a 3 Year Warranty. Also, the dealer'* price for a manufactured tranny is $2,200. I think the tranny from Jasper is much stronger.

I'm still not sure because I'd be putting about $2,600 into a car that'* worth about $3,000. I know the engine'* in good shape but still. How about a used one from a junk yard? Would a different year ' 98 or '99 fit? How about from another car, Buick, Oldsmobile or GTP?
[/size]
Yes, a 1998-2003 will work. You will need to change the internal wiring harness 15 minutes including the time to remove and reinstall the side cover.
If you get one from a Grand Prix/Regal you will need a bracket modded to mate the original rear trans mount to the W-body trans mount. When I put my GTP trans in my SSEi my mechanic charged me an extra $20 -said he had a chunk of cast iron he had on hand and bent it, drilled it and mounted it in a matter of 10 minutes.
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Old 04-02-2008, 03:51 PM   #19
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Just got the new tranny installed from Jasper. The tranny still seems to be shifting harder or faster even when in Normal Mode. The mechanic says that the Inntense PCM is not working properly and is causing the hard shifting. He sugggests reprogramming the PCM to factory settings. Does anyone agree with this? How much is it to reprogram the PCM?
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