THM 350 and THM 400 Rebuilding (Turbo Hydramatic)

We specialize in Turbo Hydramatic (THM 350 and THM 400) overhaul.  If it’s a non-functioning unit or basket case, please contact us to determine repair-ability.

Classic Car Restoration and Transmission Shop Owners - drop us an email if you need your customer's THM 350 or THM 400 transmission rebuilt. 

Our service includes pre-commitment review of your transmission repair needs and decision if moving forward makes sense.  Upon receipt I perform a complete initial disassembly.  Then thermal cleaning and second inspection.  Service includes check of bushings, gears, and thrust surfaces.  Complete reseal, replace friction components, inspect bands, inspect friction drums, replace damaged components, reassembly, adjust endplay.

NOTE: Estimates listed below are general guidelines.  Upon an initial email or phone conversation, we will send you a written estimate based on your transmission condition.  

Note: All parts are sold to you at jobber cost.  This saves you enough to offset the shipping charges and transmission remove and replace charges.  If you are considering a local transmission rebuild shop, be sure to ask for an estimate that includes parts AND labor.  

Turbo Hydtamatic THM 350 / THM 400 rebuild labor is $1,500 and includes thermal cleaning.  Price does not include rebuild kit, needed hard parts, added labor for bushing replacement, case repairs or excessive rust/corrosion/de-varnish correction, etc. Generally your transmission can be rebuilt for around $2,100 (plus any extras, plus shipping), depending on condition of transmission.  

INTERNATIONAL CUSTOMERS - EMAIL US FOR OPTIONS!  We can help locate a suitable transmission in the USA, arrange shipping to our shop, rebuild the unit, load into a shipping crate, and help with shipping to your location.   We also offer install support services for your repair shop if questions arise.

NOTE: We do not remove and replace transmissions from your vehicle chassis.  We leave that to you.  Complete transmission reinstallation and refill instructions are provided to you with every job. 

Contact us – we will take great care of your Hydramatic. 

To ask a question or get more details:  Email us at info@classichydramatic.com