Tis is a anular booster in the front barrels. They are hollow inside and have multiple holes were elmulson enters the carb. The rear booster venturies are straight leg ones with a single hole. The annular style work better on some applications and get a better signal. There are several other style boosters with double venvuries and othe r confgurations.
Hope this helps. The 4bbl is off an 84 Mustang I think I have enough parts to rebuild it If anyone would like it.
Hope this helps. The 4bbl is off an 84 Mustang I think I have enough parts to rebuild it If anyone would like it.
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