How big of a bore does a 305 TBI have?
The stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450 cfm of air. Up to 230hp engines that air flow is fine. you can do the ultimate TBI mods to the stock 42mm TBI unit and get that air flow up to 500cfm without increasing that bore diameter which is plenty for any 305 engine that you can run with TBI.
What kind of car has a 305 engine?
The Chevrolet Camaro, Caprice, Malibu, El Camino and Monte Carlo implemented the 305 along with the Pontiac Firebird and Grand Prix, Buick Skylark and Regal, the Oldsmobile Cutlass and Custom Cruiser, and the Cadillac Brougham.
What’s the casting number on a TBI 305 head?
Those are the last 3 digits of the casting number on top of that head under the valve cover. These heads flow as well as pretty much any other 305 compatible head out there and respond very well to some porting and good for nearly 30hp over the TBI 305 heads.
What kind of Cam do I need for a 305 TBI?
You can snag a used vortec L31 cam (same thing as 350 B Body LT1 cam) or even better is a used 1994-1997 LT1 Z28 cam. All can be bought used for under $100 and with a nice stage 2 chip can get you to 200hp or a bit better.
The stock 305 and 350 TBI unit has 2 (1 11/16″) bores which flow 450 cfm of air. Up to 230hp engines that air flow is fine. you can do the ultimate TBI mods to the stock 42mm TBI unit and get that air flow up to 500cfm without increasing that bore diameter which is plenty for any 305 engine that you can run with TBI.
What kind of engine does a 1988 Firebird have?
Again the 1988 Pontiac Firebird remains basically unchanged. 170hp LG4 carbed 5.0L dropped in favor of new 170hp L03 throttle body injected 5.0L.
What makes a 1989 Pontiac Firebird more resistant to theft?
Introduction of GM’s Vehicle Anti Theft System or V.A.T.S. makes all 1989 Pontiac Firebird models more theft resistant by incorporating a small resistor into the key. VATS equipped cars also display antitheft system warning decals in the lower rear corners of side windows. Shoulder belts are added in the back.
How many Firebird replicas were made in 1989?
These 1989 Firebird replicas are as close to the actual pace car as any replica offered up to this time. The only changes made to the cars that actually were on the track during the race were the additions of strobe lights and safety equipment. 1,555 were produced, 5 being test cars.