The 305 TBI is soooooo weak, small bore, long stroke, horrible induction setup, crap heads, low compression, TINY camshaft. I had an 89 Camaro RS as a beater years ago, was my friend's car, he traded it for an 87 Notch, I bought the car from the guy he traded to because I knew it had a new motor, fresh tranny rebuild etc.
That car was an auto with 2.73's, bone stock the best time it ever ran was a 10.44@67 in the 1/8, that was the BEST run that night, Im talking iced intake, good cool down, etc. I dont think it had the front sway bar then, timing might have been bumped as well.
After he blew the motor, put a .030 over 305 in it which is 310 cubic inches, Crane CompuCam 2020 Series .401/.423 Lift 194/204, Gutted Cat, Flowmaster Muffler, 14x3 K&N, removed the smog, took the passenger seat out, some crap MTP stall converter, it ran a whopping 9.72@72 MPH in cold weather. When I got the car it would only run 10.0'
[email protected] MPH in the heat of august at full weight.
Another 305 TBI buddy of mine, gutted interior, no cat, 150 shot, slicks, ran mid 8's in the 1/8 lol.
Another friend of mine ran a
[email protected] in a 90 LX Hatch, K&N Panel Filter, 14* of timing, otherwise bone stock, with a 303 pound driver, same car ran a
[email protected] MPH with an offroad h pipe and flowmasters added to the combo.