Buick GS Skylark 400, 430, 455 Offenhauser Dual 4 Ported Intake Manifold Rare
Item History & Price
| Reference Number: Avaluer:20552890 | Brand: Buick |
| Type: Intake Manifold |
Buick GS Skylark 400, 430, 455 Offenhauser Dual 4 Ported Intake Manifold Rare. Condition is Used. This is a hard to find intake. Old school aluminum dual 4. They left performance on the table in stock form but a great buick performance guru in Texas discovered how to improve on them. He offered a service years ago to correct their weaknesses. I sent it off to him many years ago and paid a good amount to have it worked. As you can see the deviders were cut down and sharpened to even and... speed flow. The intake floor has 4 areas thickened by welding as pics show then the port was lowered to increase flow as the fuel and air enter the heads. This removed the poor performing port floor humps and sped up flow as Offy should have done originally. Can't find the flow sheet from way back but the numbers did show significant gains. Sold as is. Shipped to lower 48 states only. Thanks.
