Carb or fuel injecion

I have an 87 iroc with a tp305 and i am building a350 butt don't know weather to go with fuel injection or carboration....to me carboration will be much easier and cheaper....but i am unsure

seems like it would be easier to keep your car TPI since its already a TPI car to begin with...you would have to change a few things if you went with a carb.

if i kept the tpi i would have to reprogram the computer and all that if i got a carb i wouldn't really have to do any thing, just pull out the computer and kick is as far as i can (or sell it) or are there some things i am missing....

For what it would cost to convert to a carb, you could easily afford a $150 custom PROM for Pcmforless.

Just stick with TPI. IIRC, a 350/305's computer is programmed the same. Just the 22 vs 19 lb/hr injectors. Unless you're building a wild 350, your stock PROM should be sufficient. Double check me on that though.

Either way, I'd stay injected. :bow:

If you like going fast put the carb on it. If you like getting around town in not a big hurry keep the tpi and brag about how good of mpg you get.:D

If you go to carb sell me the TPI setup for cheap.

I'm planning a mild torque-oriented 350 for my 4x4.

The TPI is a better fuel management system and will give good performance with good fuel economy but once it's set up there isn't a lot of changes you can do without doing some sort of reprogram or changing components like injectors.

The carburator system is old technology but they still sell just as many carbs now as they did 10 years ago. The carb allows you to fine tune your fuel system with low tech parts and tools. Most people will still use a carb because they still understand how they work and what they are doing if something goes wrong. It's a simple mechanical system that doesn't rely on voltages, grounds or sensors to tell it what to do.

People who clain they never had any luck trying to get performance or fuel economy from a carb were probably trying to tune a 30+ year old worn out carb. There comes a point when an old carb just has to be thrown out.

Although a polished TPI system looks nice under a hood, a huge Dominator carb or tunnel ram with 2 carbs is always a head turner. Personally I don't recommend dual carbs for a street car even if it's 2 small carbs.

Originally posted by formularpm
For what it would cost to convert to a carb, you could easily afford a $150 custom PROM for Pcmforless.

I wouldn't. How do you know it is dialed in without having either a dyno to test it or datalogging software?

Mine was done with datalogging software. They sent me the base chip, I took readings and they did more calibrations till it it was on. With Lingenfelter, he took the car and drove it and made more adjustments based on his readings.

i vote for throwing a carb on it! i just did

I wouldn't. How do you know it is dialed in without having either a dyno to test it or datalogging software?

Youre preaching to the choir, but not all of us can afford a dyno tune, even if its obviously the best way to go. The poster mentioned wanting a carb because they were easier and cheaper, seems to me that a mail-order custom PROM (although not the best option) fits those criteria a bit better.