Depends. Your intake may be tall enough that you need to use a smaller spacer (1981 injected Eldorados use a spacer about 3/4in tall) or you may need to eliminate the spacer all together. I just finished a SB400 installation using a very early Z-28 intake with a Q-jet, and I had to eliminate the spacer between the carb and air cleaner. Just roll the dice and see how it fits.
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