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! This manifold is designed to be used with performance oval port heads.
This manifold is part of the Weiand Nostalgia Series of intake manifolds. Weiand Nostalgia Series intake manifolds are made using the original tooling, and may have minor appearance imperfections that do not affect the functionality of the part. These minor blemishes are a natural part of the casting process when using the original sand casting tooling.
Weiand Nostalgia series intakes are proudly cast and machined in the USA.
We support all areas of the vintage, show, and nostalgia car hobby, and want to continue to produce these lower volume manifolds using the original tools. There is no need to search for that vintage intake at swap meets or on the internet when you can buy the real deal new from Weiand!
- 2 x 4 carburetor top
- Square flange carburetor mounting
- 2500-7800 RPM power band
- Special D-shaped port runner design
- Large volume plenum
- Power band: 2800-8000 RPM
- Height: Front 10.12", Rear 10.93"
- Port Size: 1.82” height 1.60" width
- Carb Flange Center-To Center 9-11/16"
- Weiand Nostalgia Series Intake Manifold
(1) GM Big Block Weiand Hi-Ram Intake 1981
Emission Code: 4
Engine: Chevy Big Block V8
Front Height: 10.12 inch
Fuel System Type: Carb
Manifold Type: Hi-Ram
Product Type: Intake Manifold
Rear Height: 10.93 inch
RPM Power Band: 2800-8000
Warranty: Limited 90 Day
Part Number: 1981
This part is legal for sale or use on Racing Use Only Vehicles
The following vehicles are considered Racing Use Only Vehicles:
• Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
***GM HEI will not clear, Use Side-by-Side 2 x 4 Tunnel Ram Carburetor Linkage Kit # 4022. When using carburetors with vaccum operated secondaries, use Diaphragm Housing Covers # 20-28, for more even and balanced secondary operation.Will fit tall blocks with use of Weiand P/N 8206 manifold spacer plate kit.
1 Year Manufacturers Warranty
Eastwood Offers Free Lifetime Technical Support
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