Auto Transmission Hard Parts (4T40E)

[miker33]

Hi All,

I'm searching all over the place to try and locate an auto transmission supplier that can provide replacement chain drive gears for my 4T40E GM transmissions, seem to be having no luck whatsoever at the moment.  I'm specifically looking for the 35\35 chain drive sprockets (giving 3.26:1 overall with the diff ratio), currently I have 32\38 (3.91:1 with the diff ratio) and really need to up the final drive to lengthen the ratios.

Any ideas on a good supplier who may be able to help locate these parts would be appreciated.

Cheers,
Mike

[miker33]

Found some in the end in the US, after emailing about 20 places in the UK and 30 in the US.

Good example of difference in customer service between the UK and US on the responses.

From the UK 2 in 10 responded, most with just "NA" or "No".

From the US 8 in 10 responded, most with "We have checked our own stocks and also checked with other local suppliers we thought may be able to help but have not been able to locate any of these particular sprockets. Really sorry, good luck with locating your parts."