Weiand Bbc Tunnel Ram Oval Port 1981
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Weiand Bbc Tunnel Ram Oval Port
HI-RAM SERIES: Thesetunnel ram Manifolds are usedprimarily in drag racing,tractor/truck pulls andperformance marineapplications where high RPMperformance is required. Theeffective RPM range isbetween 2,800 to 8,000 RPM.The Weiand Hi-Ram, with it'spatented D-shaped portrunners and large plenumchamber, provides optimumvelocity of the air/fuelmixture to the cylinder headintake ports. For maximumperformance in a naturallyaspirated competitionapplication, the WeiandHi-Ram is the Manifold ofchoice! This Manifold isdesigned to be used withperformance oval port heads.
Installation Notes: GM HEI will not clear,Use Side-by-Side 2 x 4 TunnelRam Carburettor Linkage Kit #4022. When using Carburettorswith vacuum operatedsecondaries, use DiaphragmHousing Covers # 20-28, formore even and balancedsecondary operation. Will fittall blocks with use ofWeiand P/N 8206 Manifoldspacer plate kit.
ong>Features
- 2 x 4 carburettor top
- Square flange carburettormounting
- 2500-7800RPM power band
- Special D-shaped port runnerdesign
- Large volumeplenum
- Power band:2800-8000 RPM
- Height:Front 10.12", Rear 10.93"
- Port Size: 1.82" height1.60" width