1 3/4″ Primaries, Standard Graphite Manifold Gaskets.
Universal Headers (LS Engines Only) Not for SBC or BBC.
Gains over 25rwhp Note: If using a larger 4L80E or older Turbo 350/400 transmission the bellhousing ears may need to be trimmed for proper clearance. Our headers are tucked in tight due to narrow older frame clearance.
