9 bolt issues

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Aug 20, 2018 | 08:58 PM

Mikes87Z

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Joined: Aug 2018

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9 bolt issues

Hi guys hoping someone can help me so this past weekend I converted my car from a 10 bolt to a 9 bolt and the driveshaft sticks like a inch and a half further out the tranny than before and at low speeds it clunks and high speeds it vibrates any information of what I might’ve done wrong would be helpful some extra info I reused the stock control arms, coils and torque arm

Last edited by Mikes87Z; Aug 20, 2018 at 09:05 PM.

Aug 20, 2018 | 11:14 PM

instro84

Member

Joined: Apr 2008

Posts: 149

Likes: 1

From: so cal

Car: 89 tta

Engine: turbo v6

Transmission: 200r4

Re: 9 bolt issues

sounds like you need a longer driveshaft.

Aug 20, 2018 | 11:43 PM

GeneralDisorder

Supreme Member

iTrader: (1)

Joined: Mar 2017

Posts: 4,255

Likes: 427

From: Portland, OR

Car: 86 Imponte Ruiner 450GT, 91 Formula

Engine: 350 Vortec, FIRST TPI, 325 RWHP

Transmission: 700R4 3000 stall.

Axle/Gears: 9 Bolt Torsen 3.70

Re: 9 bolt issues

Can you take a picture of how far out of the trans the driveline sticks out? My car had a 9 bolt stock and the slip yoke does have a lot of "stick out" it seems like. Came that way though and works just fine so maybe if you give me a picture I can tell you if it appears normal.

GD

Oct 2, 2018 | 10:22 PM

howie099

Junior Member

Joined: Aug 2016

Posts: 38

Likes: 0

From: Elwood, IL

Car: 1986 Firebird TA

Engine: SBC 350

Transmission: TH350 Stage2

Axle/Gears: 9 Bolt rebuilt w/3.70

Re: 9 bolt issues

10 bolts and 9 bolts are direct swaps. Driveshaft fits both with no issues. You have something damaged, stuck, or broken in the transmission tail? Vibration can be from worn u-joints or lost the weights on the driveshaft.