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Parts for Turbo 400 Install

Posted by Hal Oaks <iframe src='https://members5.boardhost.com/impalass427/info/user=Hal+Oaks' width='330' height='300' border=0 style='border:none;'> on 2/26/2021, 2:31 pm

Need the tranny crossmember brackets that weld onto the frame and the correct length driveshaft for my 67 fullsize. Can anyone help me out?

Re: Parts for Turbo 400 Install

Posted by david mills <iframe src='https://members5.boardhost.com/impalass427/info/user=dmills' width='330' height='300' border=0 style='border:none;'> on 7/6/2021, 1:43 pm, in reply to "Parts for Turbo 400 Install"

Handy web site. I can't seem to get to the right gear. I have the G94 axel which is a 3.31. I have a set of P215/75R 15 red lines on it. Again it's a TH 400 transmission. Which gear is correct for the car?

Re: Parts for Turbo 400 Install

Posted by sluggo <iframe src='https://members5.boardhost.com/impalass427/info/user=sluggo' width='330' height='300' border=0 style='border:none;'> on 7/6/2021, 4:08 pm, in reply to "Re: Parts for Turbo 400 Install"

27.7" diameter tire, 3.31 gear, assume 15 tooth drive gear = 36.113 which calls for the white Speedo gear in a th400.

Re: Parts for Turbo 400 Install

Posted by Tim A. <iframe src='https://members5.boardhost.com/impalass427/info/user=Tim' width='330' height='300' border=0 style='border:none;'> on 2/27/2021, 8:34 am, in reply to "Parts for Turbo 400 Install"

Hal, I might have a driveshaft for you. I can check on Monday.
Tim A.

Re: Parts for Turbo 400 Install

Posted by Hal Oaks <iframe src='https://members5.boardhost.com/impalass427/info/user=Hal+Oaks' width='330' height='300' border=0 style='border:none;'> on 3/1/2021, 9:29 am, in reply to "Re: Parts for Turbo 400 Install"

Thanks Tim.

Re: Parts for Turbo 400 Install

Posted by Tim A. <iframe src='https://members5.boardhost.com/impalass427/info/user=Tim' width='330' height='300' border=0 style='border:none;'> on 3/2/2021, 5:20 pm, in reply to "Re: Parts for Turbo 400 Install"

Hal, I have one. What’s the best way to contact you? I have a cell number you gave me a long time ago ends in 47 is that still your number?
Tim

Re: Parts for Turbo 400 Install

Posted by Hal Oaks <iframe src='https://members5.boardhost.com/impalass427/info/user=Hal+Oaks' width='330' height='300' border=0 style='border:none;'> on 3/5/2021, 4:23 am, in reply to "Re: Parts for Turbo 400 Install"

Yes. Please call me.

Re: Parts for Turbo 400 Install

Posted by david mills <iframe src='https://members5.boardhost.com/impalass427/info/user=dmills' width='330' height='300' border=0 style='border:none;'> on 7/6/2021, 9:26 am, in reply to "Re: Parts for Turbo 400 Install"

Have a M40 in my Z24 Impala. Speedometer always has been low 8-9 mph. I did an transmission OH years ago when i did the body off. My techs; many in my chevy dealership have been with me 30 years, are telling me it's a plastic gear in the case causing the trouble. I remember different colors/teeth and I need help in identifying and replacing it. Any help out there?

Re: Parts for Turbo 400 Install

Posted by sluggo <iframe src='https://members5.boardhost.com/impalass427/info/user=sluggo' width='330' height='300' border=0 style='border:none;'> on 7/6/2021, 10:30 am, in reply to "Re: Parts for Turbo 400 Install"

Here is an easy calculator you can use. You need to know your rear gear ratio and your rear tire diameter. The drive gear in a TH-400 typically has 15 teeth. The driven gears are color coded and fairly easy to replace. Remove the speedo cable, the gear cover and pull it out.
http://www.tciauto.com/speedometer-gear-calculator

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