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Dynatech Billet Aluminum Header Adapter Plates
Product images may differ from actual product appearance.
Now you can bolt BIG tube headers onto your Small Block Chevy! When using GM and aftermarket cylinder heads with a standard Chevy bolt pattern, you are limited to a 1.75" header tube. Dynatech bolt-on adapter plates let you increase header tube size for maximum power. Dynatech adapter plates are CNC machined from 5/8" billet aluminum, and have square windows machined to aid in port matching. The outer bolt pattern features threaded 3/8" steel inserts. Each kit includes plates and hardware for two heads.