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 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. 7. Injectors.

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.

Is there a problem with my 1988 irocz?

I have an 88 irocz that had the same problem. Try unhooking your mass air sensor for a minute. your check engine light will come on but don’t worry about that. See if it runs any better like that. if it does then your mass air sensor is bad, If not check your throtle posistion sensor and make sure it is positioned right

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.

Is there a TBI on a 1989 IROC-Z?

In my years in the auto service industry (1989 – 1998) I never saw a TBI in a 1989 IROC-Z. They were always TPI. If I recall correctly, The TBI option was only available on the 305 itself which was only in the all new 1989 RS Camaro.

Is there a TBI option on a 1989 Camaro 305?

If I recall correctly, The TBI option was only available on the 305 itself which was only in the all new 1989 RS Camaro. In 1988 you could get a plain jane V8 Camaro and it was not an RS, just a Camaro only not an IROC either.

Can a 350 IROC Z have rear disc brakes?

The 350 could not be had with the TBI. Additionally all 350 equipped IROC-Z’s had standard rear disc brakes. Only some of the 305 IROC’s had rear disc. If it had rear disc then you knew it was a 350 IROC-Z.

How much air flow does a 305 TBI have?