What can I do to my 305 TBI engine?
What can I do to my 305 TBI engine? Easiest fix is to replace it with a 3″ tall 14″ diameter open element filter with a flat base. You can drill a hole in the base to put your IAT sensor in. Also toss the choke collar that is between the TBI and the air cleaner assembly. Good for around 5hp on a 305 car and again mandatory for any decent engine upgrade. How much air flow does a 305 TBI have? The TBI unit. The stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450...