LD340 mod with TQ
I have also done the same thing to one of my LD340 intakes and the result was a positive one. I have used the intake with and without the plenum divider milled. Unless your going to use a cam similar to Adam's cam, do not mill the divider down.
NOTE; Becareful, someone before me wasn't and needed to weld alittle bit. Notice the outside peremiter of the carb base that needed some welding.
The milled divider trick was a trick used to help the intake get around the governing rules of the day. "No single plane intake of any kind, dual plane intakes only." Well, it is a dual plane intake. However once you mill the divider away you open up the plenum and shorten the runners into a large open plenum area. The intake starts to act like a single plane intake.
3rd picture down;
The addition of spacers add to the plenum as well. On a stock T-Q carb, this can be a problem with enuff pump shot and increase jetting, (An issue's with any carb.)
(Also pictured with the intake and spacers was an experiment on use of a electric choke on a T-Q. While I did get it to work, it was ugly.)
Overall, I did like the intake mod of just opening up the base for the T-Q. The advantage of a dual purpose carb that can breath very deep becomes apparent and works well with small to med. sized cams.
One of the first things I noticed over a square bore carb was the screaming top end of the T-Q. It earned me my first victory in a rematch over a Camaro that very night.
I have also done the same thing to one of my LD340 intakes and the result was a positive one. I have used the intake with and without the plenum divider milled. Unless your going to use a cam similar to Adam's cam, do not mill the divider down.
NOTE; Becareful, someone before me wasn't and needed to weld alittle bit. Notice the outside peremiter of the carb base that needed some welding.
The milled divider trick was a trick used to help the intake get around the governing rules of the day. "No single plane intake of any kind, dual plane intakes only." Well, it is a dual plane intake. However once you mill the divider away you open up the plenum and shorten the runners into a large open plenum area. The intake starts to act like a single plane intake.
3rd picture down;
The addition of spacers add to the plenum as well. On a stock T-Q carb, this can be a problem with enuff pump shot and increase jetting, (An issue's with any carb.)
(Also pictured with the intake and spacers was an experiment on use of a electric choke on a T-Q. While I did get it to work, it was ugly.)
Overall, I did like the intake mod of just opening up the base for the T-Q. The advantage of a dual purpose carb that can breath very deep becomes apparent and works well with small to med. sized cams.
One of the first things I noticed over a square bore carb was the screaming top end of the T-Q. It earned me my first victory in a rematch over a Camaro that very night.
