They have 20% more exhaust flow than cast iron Vortec heads
1982-1989 Chevrolet P20
hole suitable for 14mm shocks as well as many other uses
Zinc-plated inner sleeves
SAVES FACTORY SETTINGS AND RETURNS EASILY TO STOCKIntroducing the next generation Evolution CTS3: all-new
Fel-Pro Printoseal Performance Intake Manifold Gaskets - Composite - 2.314" x 1.30" Port - .060" Thick - SB Chevy Throttle Return Spring Kit They have 20% more exhaustFel Pro deliver reliable sealing under grueling racing conditions. From the leader in aftermarket engine sealing, FEL PRO the gaskets professionals trust. Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function. GMP Performance V8, 262 (4. 3L), 265 (4. 3L), 267 (4. 4L), 283 (4. 6L), 302 (4. 9L), 305 (5. 0L), 307 (5. L), 327 (5. 3L), 350 (5. 7L), 400 (6. 6L); Fast Burn Head