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So I have a 1994 f150 with a 302 5.0 in it. I'm trying to fix it but I'm stumped it is backfiring out of the intake when I go past half throttle but any less it is fine.

I already changed the spark plugs and checked that the distributor was connected right.
 

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So I have a 1994 f150 with a 302 5.0 in it. I'm trying to fix it but I'm stumped it is backfiring out of the intake when I go past half throttle but any less it is fine.

I already changed the spark plugs and checked that the distributor was connected right.
I agree with @COP TZR - If you have "backfiring" out of the intake, its either running very lean and is "popping" audibly out the intake or really backfiring which is a signal that the plugs are firing out of timing while the intake valve is open.

The cause could be a multitude of things, check the distributor, check the Hall Effect signal, check the ignition module, then check fuel supply (if popping).

Was the distributor taken out previoulsy?
 

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No the Distributor has never been removed
Check the Hall Effect Sensor and ensure fuel pressure/supply

Is the engine actually backfiring, or is it "popping" audibly through the intake through throttle transition?
 

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Typically a popping out of the intake under throttle transition or higher demand fuel condition leads to a lean condition.
 
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