10-30-2008, 08:47 AM
Must be an old casting. Most have a threaded port in one of the rear runners. If not you can get a spacer from Summit with a large threaded port for the vacuum booster like this: http://store.summitracing.com/partdetail...toview=sku
Your carb should have a manifold port for the vacuum modulator on the tranny. It will be the one with vacuum at idle. If it doesn't it is ported vacuum and the tranny will not shift correctly.
Your carb should have a manifold port for the vacuum modulator on the tranny. It will be the one with vacuum at idle. If it doesn't it is ported vacuum and the tranny will not shift correctly.
'72 TBA...