Fathers Day
Call Our Support Line
24 Hours / 7 Days a Week!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Top Categories
All Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

JW Performance 30001-1

Performance Kit TH400


jegs shipping
Estimated ship date 07/07/17 if Ordered Today
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
JW Performance 30001-1 Performance Kit TH400 $52.14
Performance Kit
  • TH400
  • Heavy Duty

  • Specifications:

    Manufacturer's Part Number:

    Increase the Performance of Your Transmission

    These shift improver kits increase the performance of automatic Powerglide/TH350/TH400 transmissions. They are cost effective and include necessary valve body plates, as well as gaskets and complete instructions. Available in your choice of Street/Strip and Heavy Duty kits.

    Street/Strip: For hot rod applications - substantially increases line pressure, and removes the delay out of the shift.

    Heavy Duty: For towing or RV applications - removes the delay out of the shift and not quite as harsh as the street/strip version.

    Items You Need