My car is a 1984 Firebird S/E Notchback (custom I think), it has a 305 in it and pretty much everything is stock (I have a lot of work to do I know), but anyway ever since I got it, it just never seemed to have the power it should, its only got 80,000 miles and I've had a few problems with the carb here and there, so I think I just want to switch it over to Fuel Injection and not have to worry about all these problems

So how would I go about finding out exactly what I need to switch my carb to a TPI or would a TBI be better?

Any help would be great, Thanks

 

Power problems? Bring that LG4 over my way, I'll make her dance!

You're quadrajet flows MUCH more cfm than both (stock) fuel injection systems. What kind of problems are you having with the Carb?

If you want to swap to fuel injection, do not swap a stock TPI in it's place... you'll run the same (maybe even slower), and you won't be too happy. With the right intake and cam, and if you port out you're heads, you're quadrajet will help that little 305 scream it's way towards 6000-RPM.

You won't be able to do that with a stock TPI unit, but if you're heart is set on this type of swap, go with a stealthram intake ahead of time.

Stay away from TBI. If you want to swap over to TPI from a Carb, the most important part of the swap (and the hardest to install), will be the TPI sending unit... and the intank fuel pump. If you can accomplish this part, the rest of the swap will be a breeze!

 

It all depends on the application of how your gonna use your vehicle. If your gonna use it for everyday driving and you want good fuel economy and good low end to mid range torque than go with the TPI. Here are some good advantages of TPI, clean high tech appearance, superior low speed and mid-range power (as mentioned before), increased fuel economy, improved cold starting and idle quality, reduced emissions at idle and part throttle, reduced risk of engine fire, , replacement sensors readily available, unlimited hop-up potential, more precise altitude compensation and more precise adjustment for atmospheric conditions.

 

I agree, it does depend, But, all of my LG4's in the past served that particular purpose. The only thing the ECM does, over a Carb... is constantly manage air intake, fuel distribution, and spark (electronically). Carbs do the exact same thing, but mechanically.

LG4's, when uncorked, deliver excellent low end torque.... along with strong upper RPM (right cam, heads etc..). Gas mileage is good (not great), and is definitely much easier to tune for one who isn't ready to datalog....

LG4 = Traditional, in you're face raw muscle appearance!

I disagree here, LG4's can deliver the same performance in this respect.

Here I'll agree...

At 47-psi, over the quadrajet's 7? I'll disagree here. I've experienced many leaky O-rings, injectors and regulators. It's far worse that what any mechanical pump, or Carb, can spew...

This can also be one of TPI's weaker points... as sensors, and wiring go bad all of the time. The trouble-shooting alone can take forever to pinpoint as opposed to a Carb. Not to mention the $$$$ to fix (not saying it's that expensive, just more expensive than a Carb).

Ohh come on now. The same applies to carburetion. There are more pages dedicated to carburetion in both Summit and Jegs, over fuel injection...

True, but it kinda takes the fun out of drag racing though. Not that what you're saying doesn't represent the greatest in technology (over Carbs), it does... but it's fun to get a little old school.

 

Like I said all depends on how your gonna drive the vehicle. I had an Lg4, and i hated it!!! On cold days the choke gave me problems, It would bog alot, before and after rebuilds. Sometimes it would flood. And I used to get beat by TPI 305's. I just think fuel delivery is better on a tpi than a carburator and less maintenance, Much less maintenance. Ive had friends with Tpi's and they havent experienced much problems with them, and i noticed a much better throttle response from a stock tpi to a stock carb. Dont get me wrong Its a good Design and it worked great In its day, but ill take take technology over old school anyday.