Spreadbore squarebore to

[mopar400]

Hi! I want to use my Spreadbore Thermoquad with a Weiand 8008 (Squarebore) intake
what do i need to do?

/Linus

[Ghoste]

A spreadbore to squarebore adaptor is all.  You will have to make sure that it fits a Wieand intake and that the throttle blades will all open fully.  If you have a local speedshop that can help you out it will be a snap.
This is a likely suspect;

http://www.holley.com/17-6.asp

[flyinlow]

Not all spreadbores are the same on the bottom. Some Thermoquads will have vacuum leaks with some quadrajet adaptors. Make sure the carb gasket and adaptor seal any areas that will be subject to vacuum. Usually the problem,if any, are at the back of the carb behind the secondarys.