Pro-Jection Intake Chevy Small Block V8 Pro-Jection TBI Intake Manifold High Rise Dual Plane W/egr 1962-1986 262ci-400ci, 1987-later with Aluminum Heads HolleyPro Jection Tbi Intake Manifold High Rise Dual Plane w Egr 1962 1986 262ci 400ci, 1987 later with Aluminum Heads Features and Benefits: Egr Provisions Height: Front 3. 91 inch, Rear 5. 40 inchPort Size: 1. 89 inch height 1. 15 inch width High Rise Dual Plane Design Holley Pro Jection Tbi Mounting Flange Power band: Idle 6000 RPM Associated Comments: Utilizes late model alternator and A C bracket mounting provisions. Has vacuum taps off manifold