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- - 89 GMC Scottsdale (https://67-72chevytrucks.com/vboard/showthread.php?t=488159)

Corv8

10-09-2011 01:05 PM

89 GMC Scottsdale

On this project truck I picked up recently , 305 auto. is the auto a overdrive . there is no positon on the column for it. I thought htese all had the 700 tranny. it only seems to shift up to drive and thats it.
It has been ten years since I have worked on this model of truck and have forgot a lot about them.

thanks

Colt Cobra

10-09-2011 02:38 PM

Re: 89 GMC Scottsdale

probably a 305/th350.

Corv8

10-09-2011 11:29 PM

Re: 89 GMC Scottsdale

No kidding I thought by that time they all had some type of overdrive.

jb1016

10-10-2011 09:44 AM

Re: 89 GMC Scottsdale

1 Attachment(s)

You can tell from the pan what it is:

Attachment 812361

88copperhead

10-15-2011 11:50 PM

Re: 89 GMC Scottsdale

Could also be a 400 trans thats what came in my 88.The 700 wasnt up snuff for work trucks or if u got towing pkg.:chevy::metal:

88copperhead

10-16-2011 12:01 AM

Re: 89 GMC Scottsdale

oh look at gear indicator u will see if its a factory 3 or 4 speed trans

Corv8

10-16-2011 10:59 AM

Re: 89 GMC Scottsdale

the gear selctor has no overdrive position , as I stated before I could not remember what my 88 had on the selector but it was a 700R4. I had no issues with it , towed my car all over the place and the tranny held up well.
I got a peak under the truck last weekend and it looks to be a TH350. thanks for the referance photo.

Al

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