ok got a 88 305 tpi . building a 355 forged bottom end, trying to decide which way to go. looking for which is going to give the most power for the money. please recomend cam,an heads up set up to run. its a street car will go to the track often. o i forgot it is on the bottle too.

 

most power for money is easy...CARB...

but for driveabilty and reliability EFI>CARB

its going to cost far more money to build a EFI car right than a carb'd car.

But im going tpi over carb in my 92 trans am. I bought the car and it had nothing but the harness and fuel lines. Most people that encounter this in a 3rd gen just rip and tear into the car and slap a carb on it. I am trying this efi crap out and running a 333ci(327 bored .040 over)

yes im crazy and own 2 oither 3rd gens that are carb fed

 

which makes more power?

 

A carb will probably make more horsepower do to its shorter intake tract. The TPI intake will make more torque and might feel stronger on the street due to the extra torque. If you put a short runner EFI intake on, such as a Stealth Ram, its pretty much a toss up. Magazine testing has shown horsepower and torque numbers almost the same on an engine dyno using similar intake parts.

And I've seen carb setups that cost almost as much as a TPI setup. Carbs are not as cheap as some people think, especially if you're starting from scratch.

Which is better? Well its really up to you. Everyone has their opinions. My opinion is carbs are fine for race cars or weekend drivers. But for a daily driven street car, you cannot beat EFI, and TPI is a great form of EFI for a street car.

 

when i went from tpi to a carb set up i went from a best of a 12.90 with efi to a 12.50with the carb and gained about 4mph, but at the same time i lost a lot of mpg but the driveability is about the same in warm weather but in the cold weather its terrable for the first 15mins or so of driving even if its warmed up before i go out

 

I'm currently in the same boat. I have a TPI motor with 30# injectors and an afpr and some other stuff and am aobut to buy an engine with an edelbrock carb and intake manifold. Not sure the part numbers but I think it's a 650. My dilemma is this: The new engine is cammed so if I hooked up my tpi, I would need to burn a new chip and also it might not work well with the cam (don't know the specs on that yet either.) I might switch to HSR if the engine makes the power this guys says because then my nitrous would probably break my transmission and I'd just sell my kit for hsr and get tuning software. I guess my question is, how hard is it to tune an efi engine if it's completely different from stock in pretty much every way?

 

Not exactly a question for the Carburetor forum.

 

Well being that this is a thread talking about carbs vs. efi I wouldn't exactly consider this to be an outrageous question to ask here, though I can see where you are coming from. I guess I will start a new thread in the efi section and hopefully the next person with 30,000 posts who probably knows the answer to my question will answer it.

 

#1 - that wasn't the original topic of this thread.
#2 - it isn't a topic for this forum.

Appropriate.

And your point would be...

 

I guess my point would be... don't be so rude?

 

No intent to be rude. Just stating the facts. The Board tries to keep topics somewhat organized and orderly.

 

i see nothing rude......

:my addition to thread:

i got my tpi running finally and LOVE it....so much better than carbs.....that is all

(cant wait for ls series swap this winter )