Width of 2bbl adaptor plates?

[fordconvert]

How wide are the 2bbl adaptor plates that fit the logs? Im asking because I got a older holley projection system cheap and was thinking of hacking it to the 200. Its a 2bbl but its made to fit perfectly on the back of a spread bore 4bbl manifold so they bores are fairly large and wide. They are 2"ish bores about 4 1/2 on the outside.

 

[Anonymous]

Hi TJ!
I have a Transdapt layin around here.The inside area for the 2BBls throttleblades is:11 to 6cm and 2cm deep.
The bolt circle is standard holley/autolite/motorcraft 12,1 to 9cm
I know,all metric.Very little time here,but maybe easy job for you to convert..
..hope that helps..
OldSchoolOlli

 

[MustangSix]

This is the adapter for a Projection 2bbl TBI to a Holley 2300. You could probably use this to adapt a Projection throttle body directly to the log.