Skip to main content
ASK OUR EXPERTS
1-866-464-6553

Hooker Blackheart NAG1 Transmission Adapter Plate

1973-1976 Mopar A-Body NAG1 Transmission Adapter for Gen III Hemi Swap

Part # BHS574

Hooker Blackheart NAG1 Transmission Adapter Plate

In Stock
Free Shipping on orders over $150*
$78.61
Add to Wishlist
Get that Gen III Hemi swap started the right way, by using a fully engineered engine & transmission mounting system that provides maximum component clearances, ideal drivetrain geometry, and clearance for Hooker BlackHeart swap headers & 3.00"" exhaust system. This transmission adapter bracket works with the modular crossmember BHS572 to fit the NAG1 automatic transmission. This design allows future transmission changes by swapping out only the transmission adapter bracket instead of replacing the whole crossmember. The crossmember (available separately) and this adapter bracket works with engine mounting brackets (available separately) for optimal engine placement to allow Short Runner Valve Clearance (eliminates modifications to the firewall & brake booster). Hooker BlackHeart swap headers & exhaust systems (available separately) are designed as part of the swap system & provide clearance with all of the transmission options.

Features:

  • Transmission Adapter Accommodates Popular NAG1 Automatic Transmissions
  • Use with Crossmember BHS572 (sold separately) and Transmission Tunnel Hoop BHS578
  • Uses with GM Style Transmission Mount - Hooker Part# 71223029HKR or 71223030HKR (Sold Separately)
  • Modular Design with Bolt-on Transmission Adapter Allows Future Transmission Swaps without Replacing the Crossmember
  • Welded Steel Construction w/ Black Coating for Great Looks and Durability
  • Heavy Duty 3/16” Steel Construction - for Strength & Durability
  • Includes Mounting Bolts & Instructions

About Hooker BlackHeart

Shop the official site of Hooker BlackHeart and explore exhaust systems, engine swap kits, and mufflers for both import and domestic vehicles at Holley.com!

Application1973-1976 Mopar A-Body
Brand Hooker BlackHeart
ColorBlack
Emission Code6
FinishBlack Coated
MaterialSteel
Motor TypeChrysler Gen III Hemi
Product TypeTransmission Mount
TransmissionNAG1
Type of ComponentTransmission Mount
UPC090127119525
Part NumberBHS574
Use with Engine Mounting Brackets BHS571, Transmission Crossmember bHS572, and Polyurethane Transmission Mount 71223029HKR (Black), or 71223030HKR (Red). NAG1 Transmissions also requires BHS578 - Transmission Tunnel Hoop (Provides Additional Support for Transmission Tunnel and torsion bar crossmember) Transmission tunnel and Torsion bar support modifications are required to install BHS578 Transmission Tunnel Hoop support. Use with Drivers Side Mounted Starter on NAG1 transmission - to Avoid Clearance Issues with the Factory Steering System.

*Free Shipping & Handling only offered to the contiguous US on orders over $150, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.