Dynatech® - Aluminum Adapter Plate

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1989 GMC CK Pickup
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GMC CK Pickup 5.0L / 5.7L with Chevy Small Block Engine 1989, Aluminum Adapter Plate by Dynatech®. Material: Aluminum. These SBC to Stahl Aluminum Adapter Plate Kits allow you to use a larger tube size to maximize power.



Material: Aluminum
Thickness: 0.625"


  • Delivers a huge boost in performance and an awesome sound
  • Rigorously dyno-tested to provide maximum horsepower and torque gains
  • Precision designed for superior fit and function
  • Expertly crafted from the finest materials for prime quality and reliability
  • Ensures years of no-hassle, maintenance-free service
  • Meets or exceeds all of your racing or performance requirements


  • Adapter Plate
  • Exhaust Bolts

The Standard bolt pattern will only allow you to use a 1-3/4" tube size before interfering with the bolt holes. Featuring 5/8" thick machined aluminum with steel threaded inserts for the header bolts, these are the ultimate way to increase the capability of your engine. Each kit comes with all hardware to install the plates and 1.25" square ports as a starting point to help you port match the plates to your ports.

Dynatech® has been an industry-leading expert in the evolution of exhaust technology for over 20 years. One of the finest kept secrets of racers and performance builders, state-of-the-art exhaust systems and headers built by Dynatech have made a huge impact on the hot rod, circle track and drag racing world. Painstakingly designed and meticulously engineered, supreme quality Dynatech exhaust products offer amazing horsepower and torque gains. Tube lengths, diameters and routing are thoroughly designed and tested for superior fit and function. Dynatech continues to build supremely efficient and ultra powerful exhaust products that deliver outstanding performance and sound which are sure to put you one step ahead of other drivers on the road.

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AFCO Performance Group LLC warrants its products to be free from defects in materials or workmanship for a period of 12 months. The Warranty period begins on the date the product is delivered.

The Warranty is granted to the end-user and applies to products which are purchased, installed, and used for the purposes for which they are originally designed. This Warranty covers defects arising under normal use and does not cover malfunctions or failures resulting from misuse, abuse, neglect, improper installation, or incorrect maintenance.

During the Warranty period, AFCO Performance Group LLC will repair or replace, at no charge, a product that is defective in materials or workmanship. AFCO Performance Group LLC reserves the right to either repair or replace a defective component at its discretion and reserves the right to substitute an equivalent product under the terms of this Warranty.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

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