Small Block Chevy Stahl Pattern Adapter Plates- Mild Steel; 18 Degree Heads

These precision laser cut 3/8" thick adapter flanges are manufactured in the U.S. and are machine surfaced. The adapter plate is bolted to the head with counter sunk bolts, and has tapped holes for header flange attachment.

These are for 18 degree SBC heads ONLY. These adapt from a bowtie-style 18 degree bolt pattern (6-bolts inline, spread pattern compared to conventional SBC heads) to a Spread Port Stahl Pattern Header Flange #2637
The adapter plate has port sizing of 1.65" wide x 1.77" tall, the maximum allowed with a small block Chevy 18 degree spread bolt pattern.

THIS IS FOR A PAIR OF ADAPTERS + HARDWARE ONLY. For a complete set with matching header flanges, see our Stahl Pattern Adapter Kit- Stainless Steel.

Sold as a PAIR of adapters