ATI Performance Products TH400 transmissions offer great performance for 400 c.i.d. or larger big blocks.Modifications and options include:* Fully blueprinted and equipped with high-flow lube circuits, increased torque capacity, and hard chrome oil rings* Sprags replaced with heavy-duty units* Clutch packs are assembled for individual applications* Compu-Flow valve body standard* Special low-gear sets for increased launch capability* Lightweight options available to upgrade the transmission

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