Fel-Pro Intake Manifold Gaskets - SB Chevy - Aluminum Heads w/ Non-Conventional Ports, Chevy 18 High Port - 1.25" x 2.15" Port Size - .045" Thickness AA0700AF2T570401 7/8 in Spline

7/8 in Spline

They're designed to make it as easy as possible to install a pan and seal it properly

Good low end torque and mileage

using the large Gladiator U-joint cross which never needs grease

Fel-Pro Intake Manifold Gaskets - SB Chevy - Aluminum Heads w/ Non-Conventional Ports, Chevy 18 High Port - 1.25" x 2.15" Port Size - .045" Thickness AA0700AF2T570401 7/8 in SplineFel 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); 18 Degree High