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Transmissions and Drivetrain Need help with your trans? Problems with your axle?

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Old 10-09-2005, 03:04 PM   #1
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Join Date: Jan 2001
Location: Rio Rico, AZ 85648
Posts: 1,116
Car: 1989 IROC-1
Engine: L98
Transmission: 700r4

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ES Tranny mount and pinion angle...

On the 89 IROC, the tranny mount broke. Replacing it today and noticed that with the preload bar that is supplied with the mount, the new mount is about 1/4" or so taller than the stock mount.

Did the stock mount compress 1/4" or am I going to have some vibration problems?

Also, and this ticks me off, the cross member slot is too small for the bolt. Gotta drill or file it out.
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Old 10-10-2005, 12:24 AM   #2
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Join Date: Jul 2002
Location: sacramento, ca USA
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Car: 89 iroc-z 5.7tpi 350,
Engine: 5.7tpi 350,
Transmission: T-56 fully built WOOHOO

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Re: ES Tranny mount and pinion angle...

Quote:
Originally posted by gruveb
On the 89 IROC, the tranny mount broke. Replacing it today and noticed that with the preload bar that is supplied with the mount, the new mount is about 1/4" or so taller than the stock mount.

Did the stock mount compress 1/4" or am I going to have some vibration problems?

Also, and this ticks me off, the cross member slot is too small for the bolt. Gotta drill or file it out.

yea you gotta **** with it to get it to bolt, but its much better

dont use that stupid plate that they give you, just the mount it self against the tranny that plate messes up the pinion angle and causes vibration
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Old 10-10-2005, 12:36 AM   #3
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Location: Bonner Springs, KS
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Car: 1991 GTA
Engine: 355cid E-tec TPI
Transmission: 700R4 Raptor
Axle/Gears: 3.42 Motive

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another vote for the no-plate... works great without it.
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Old 10-20-2005, 12:11 AM   #4
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Well...I didn't take your advice, I put the stupid plate in and sure enough, I get some vibration at higher rpm.
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Old 10-20-2005, 11:39 AM   #5
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Join Date: Mar 2005
Location: Wichita KS
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Car: 1987 GTA/1998 Explorer
Engine: 355, trick flow heads, zz409 cam, 3
Transmission: 700r4, shift kit, valve body
Axle/Gears: precision 3.73's, auburn diff

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so did i when i first put mine in. take it back out, takes 10 minutes if you have 2 jacks.
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Old 10-20-2005, 07:44 PM   #6
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Engine: L98
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yeah, it's not even that hard (10 minutes) to remove. Took longer to change my clothes and wash my hands.
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Old 10-20-2005, 09:08 PM   #7
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Hmm i cant even remember if i put the plate in or not i still got the original package ill have to check to see if i left it in there. I gots a high speed vibration...
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Old 10-21-2005, 11:40 AM   #8
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Join Date: Apr 2003
Location: Bonner Springs, KS
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Car: 1991 GTA
Engine: 355cid E-tec TPI
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If you followed the directions that came with it, you probably put it in... They say you have to... But, of course you do not..
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