Can, I switch my tpi to a 350?

 

First, do a search on this forum and read all the other questions and answers about this topic.

Second, yes you can, but remember a 305 TPI uses 19lbs injectors and a 350 uses 22lbs. You should get 22lbs injectors, and get yourself the right computer chip for your new combo.

 

The knock sensors are different as well, so If you do do this swap be sure to change that too.

 

let's not forget that TPI was designed to flow just right on a 305. It chokes the life out of a 350. If the engine where going in a truck used for TPI, that's about the only reason to run TPI. Otherwise, ebay it, and get yourself a Holley Stealth Ram. They are $450 for the manifold, plenum, and fuel rails. Also, just bypass the knock sensor. It doesn't do good for anyone lol

 

No....Just....No.

The TPI setups between 350/305 are the exact same except for injectors and chip. No reason it'd "choke the life out of a 350" and flow just right on a 305. The tpi chokes off on any engine. It just doesn't flow well above 4.5K.

Why would you ever bypass the sensor? And why is it supposedly different? Part numbers are the same.

 

i'm doin a simaila swap. wut size inj do u guys recomend for a not so stock 350 or 355.

 

I stuck a mild 350 into my 86 T/A that originally had a 305 TPI changed nothing but the capacity of the engine in the program. Runs fine.

 

That's a really hard question to answer without more info on what the combo is. If whatever injectors you're using are going static, then they're too small.

 

So you're saying a 305 won't choke at 4500 because it's sucking that much less air?

I'm not arguing that the TPI is better or even close to the HSR or comparable intakes. (Hell, I'm using the HSR right now and I love it).

 

TPI was originally designed for the 305. It was sketchy back in the 80's as to whether or not GM was gonna put a 5.7L back in the camaro and they were looking for a smaller cube alternative. That's the only reason the 305 got any high-performance technology at all. But it should run just fine on a any small block. All depends on what you wanna do with the setup. Everyone knows you're gonna hit a roadblock with TPI as far as highend hp. They are really torque setups.

Will

 

Thanks for the obvious blanket statement.

You're saying that the 305 ISN'T going to choke at 4500 with the tpi. That's just blatently not true. What makes it use more air is moreso the cam and heads than cubes.

 

I've owned three over the last few years. An 87, an 85 and a 91. Must be cause they're firebirds or something

If by "they keep pulling after 4500" you mean "they pull to 4600" then yeah sure I guess you're right. Otherwise all three of mine have just stopped reving after that.

 

This is retarded. WAY off topic. To the original poster: Yes, you can use the tpi. You should also use with it the 22lb/hr injectors and at least a stock 350 burn as a baseline.

Is the engine a stock 350 or some other concotion? If it's even a mildly built engine you'll do better with a carb or some aftermarket tpi based induction system. The cheapest of which being the Holley Stealth Ram. To get it to run *best* you'll new a custom burn on the chip. Depending on how radical it is it'll still be drivable on the stock tune though.

 

insane;

maybe your used to the peanut cammed auto 305's...i guess youve never driven a G92 305 with the 5 speed and 3.42 gears...

mine ran 14.4 with 36,000 and all the factory stuff...it ran its fastest when revved to 5,500-5,600...i know becasue i tried it at 4,800 5,200 and 5,600...

with a muffler a K&N filter and the egr walls ground down it ran 14.12@96..only the 3.23 geared L98's could touch it...

TPI was designed for the 305 and it would run really well..but you had to have the L98 cam T5 and 3.42 gears to get anywere...

the autos and non G92 LB9's were slow...which i guess is what youve driven...drive a G92 car and youll change your mind.

 

The 85 didn't have a peanut cam. Those cam with a cam identical to the early l98's. It was an auto however. The 87 was a non-g92 5 speed and the 91 was a g92 5 speed. Sounds like you know my cars pretty well though

Stock for stock they all are horrible for revving, period.

Like I said, this is retarded.

Ditch the TPI and go HSR. Can be done for not much more than a TPI swap.