What's this do?

[Mike Caldwell]

OK, it's a riser block for a two-barrel carb off my 351 "Machine shop orphan."

Didn't have one on my 401 out of a New Idea harvester. Does it enhance drivability, etc?

Trying again to post pix

[James]

Would need a pictures to know what you are talking about.

[lizziemeister'sV6]

The spacer under the carburator increases low end torque - such as when a truck engine is when pulling from a low rpm throttle position. Equipment like the Uni-System farm unit was basically held at constant rpm during operation. Uni -System built by New Idea had numerous machinery applications that could be changed as the need arose - from chopping corn silage, picking cotton and other tasks. Much like today's modern combine does by switching header platforms.