just needed to know I swaped a 305 tbi to a 350 tbi, bored 30 over, over sized cam, within smog legal limits,$400 custom motivater chip,stock rear gears 3.08 what size should i go to, o yea 5 speed trans.stock injectors i suppose i need to change to 350 injectors.eldelbrock headers,edelbrock intake,3in. cat back.

 

A 5 spd should have a minimum of 3.27/3.23 gears for motivation,3.42-3.73 would really set it off!
I hate to say this after you spent some cash,those edelbrock headers you bought are a restriction they bottle-neck at the collector the heddmans or the hookers are the shortie meal ticket.I bought a Formula 1990 w/5.7,chip,3.42s,open air box and a 700r4 with the Edelbrocks and it ran consistant 13.8s.I swapped the hedders to the Hookers and ran 13.6s and the reason is the Edelbrocks have a 1-5/8 primary and the collector is just short of 2.5" wheras the hooker/heddman design is 1-5/8 w/3'' collector no more bottle neck and the Hooker/Hedddmans are less expensive

 

305 to 350 TBI info can be found on the TBI forum. Much better source than this forum, I'm afraid.