Special Q
Here, the float-and-needle assembly have already been replaced, though the needle seat now measures 0.135 inch as opposed to a stock seat's 0.90-0.120-inch diameter. Again, this is done in the interest of making sure our healthy little small-block has enough to drink. The orange power-piston spring has a lower vacuum rating, ensuring that our Q-jet's power piston--and therefore its primary metering rods--will work well with our new combo.
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