[Tom Vaught]

We played around with some of the Spread Bore 800 carbs when I worked for Holley in the 70s using boost.

They worked ok when we put them in "a box" like the later 90s old Vortech Supercharger Units were, with some of Vortech's early boosted engine projects.
These were lower boost projects like 12 psi max.
You would have to buy the box and then machine it for the spread bore manifold inlet gasket pattern. I have a couple of the enclosures on the shelf. Better ways to do it with a Square Holley but the Modded spread box box will allow Holley or Q-Jet carbs to be used with moderate boost levels on the street.

Picture of a Vortech Enclosure and the parts attached. Jegs wants $1000 for the box. I would want less for mine, LOL!

Tom V.

[charlie66]

Originally Posted by Tom Vaught

We played around with some of the Spread Bore 800 carbs when I worked for Holley in the 70s using boost.

They worked ok when we put them in "a box" like the later 90s old Vortech Supercharger Units were, with some of Vortech's early boosted engine projects.
These were lower boost projects like 12 psi max.
You would have to buy the box and then machine it for the spread bore manifold inlet gasket pattern. I have a couple of the enclosures on the shelf. Better ways to do it with a Square Holley but the Modded spread box box will allow Holley or Q-Jet carbs to be used with moderate boost levels on the street.

Picture of a Vortech Enclosure and the parts attached. Jegs wants $1000 for the box. I would want less for mine, LOL!

Tom V.

Doing it this wayin a box , does it require all the same mods with the power vavle ? Or is there a different way?

[berniearlta]

Tom, I see a lot of people running just a carb hat on you tube. I was looking to run a modified air cleaner housing under my shaker scoop (76 T/A), without loosing the original stock look. Without putting the carb in a box what would be my biggest hurdle?

Thanks,
Vernon