HI–RAM SERIES: These tunnel ram Manifolds are used primarily in drag racing, tractor/truck pulls and performance
marine applications where high RPM performance is required. The effective RPM range is between
2,800 to 8,000 RPM. The Weiand Hi–Ram, with it's patented D–shaped port runners and large plenum chamber, provides optimum velocity of the air/fuel mixture to the cylinder head intake ports. For maximum performance in a naturally aspirated competition application, the Weiand Hi–Ram is the Manifold of choice
marine applications where high RPM performance is required. The effective RPM range is between
2,800 to 8,000 RPM. The Weiand Hi–Ram, with it's patented D–shaped port runners and large plenum chamber, provides optimum velocity of the air/fuel mixture to the cylinder head intake ports. For maximum performance in a naturally aspirated competition application, the Weiand Hi–Ram is the Manifold of choice
Hi–Ram Intake Manifold 1957–1986 262ci–400ci, 1987–later with Aluminum Heads
Installation Notes
GM HEI will not clear, Use Side–by–Side 2 x 4 Tunnel Ram Carburetor Linkage Kit # 4021. When using Carburetors with vaccum operated secondaries, use Diaphragm Housing Covers # 20–28, for more even and balanced secondary operation.
Features
- 2 x 4 carburetor top
- Square flange carburetor mounting
- 2800-8000 RPM power band
- Special D-shaped port runner design
- Large volume plenum
- Power band: 2800-8000 RPM
- Height: Front 9.06", Rear 9.50"
- Port Size: 1.89” height 1.18" width
Parts & Kits for 1984
| P/N | DESCRIPTION |
| 4021 | Side-by-Side 2 x 4 Linkage for Small Block Chevrolet |
| 20-28 | Cover-Diaphragm Housing |
| 8984 | Manifold top gasket |