Hey guys! searched around the forum but couldnt find the answer to my question. I am in a process of making a project out of my bird. I want to put my friends turbo on it. Turbo came from a 300zx 2nd gen. not sure what it is exacly. But my question is does any performance shops manufacture parts for 305? or do I need to custom fabricate?

 

from what ive read, is that no one makes a turbo set up for third gens ...

every thing has to be custom
but im not an expert

 

you can get a turbo kit for a third gen off of ebay its one of ebay specials not sure how nice it.

 

i herd about those kits and from what i heard weren't positive responses.

 

most of those kits dont come with headers, which is where a lot of time/money is involved, making turbo headers. Do some research and go custom, its cheaper and much more satisfying

 

idk everyone ive seen has one here is a search for turbo manifolds from 200

ebay

 

i wonder if the 305 can handle that...i mean maybe a rebuilt one..haha post some pictures when your done

 

Made a mistake guys its from a 300z a smaller T25 with T3 flange. I am going to ask around for how much a exhaust shop would charge me for custom one. I think the engine would hold it. Its lasted me 200k miles so I wana see what I can pull on it. In worst case I blow it and get LS1.

 

a regular exhaust shop wont be able to fabricate that up you will need to find a performance shop and its not going to be cheap prolly in the 1000 + dollar range not worth it in my opinion

 

Well I actually found the full piping kit for it on ebay including T3 turbo's and intercooler. The kit is for a TT system only for 799.99 which I think is pretty deamn good. I am thinking I need a bigger carb so I can get more fuel/air through. Then a custom oil pan, and finally a new tranny because I think if I go with the TT, my tranny will just **** it self from the power. I am always welcome to any suggestions, thanks guys.

 

ya i posted the link with all the turbo stuff for the 305/350 you posted this in the tbi forum so i assume you have a tbi with that thought taken you will need lots of tunning and other little misc stuff but if you are infact going carb i beleave you will need a blow through carb

 

Thanks markymarco.
Any feedback how difficult it is to do convert TBI to blow through carb, also if theres any brands I should look out for? Do I get what I pay for?
Found Barry Grant those are around $450...

 

its basically just converting from tbi to carb im sure if you do a search you will find a write up on it and barry grant carbs are always very nice so i assume you do get what you pay for but i dont know how many different companys are manufacturing them

 

I was reading up on the articles in here and stumbled upon a TBI pressure regulator. I wonder how much more fuel I can get dumped into it, and will it be enough. Sorry if I am being too nosy about this, I wish I could find like a blog or tech page where some one has done it so I can actually look at their setup and go from there, right now I am kinda in a blind at where to start.

 

Its been a while but does Holley still make the 670 cfm throttle body? With a spacer it should flow near 700 cfm no?

 

ya they still make it but i prefer the 454 tb it has 2in bores not sure about the holley 670

 

Man be careful, you are asking a LOT of basic questions about TBI to be thinking about turboing it. I'm not trying to be degrading but forced induction requires you to have a real handle on tuning or you can quickly melt your engine into little bits.

In a nut shell, to turbo TBI you need the EBL system, 90 lb injectors, a 454 TB, a vaccume referenced regulator and lots and lots of practice tuning before you attempt to add the turbo into the mix.

The easy fix for you is to go carb and hope its jetted rich enough to keep your pistons in one piece.

 

 

If successful, how much horsepower and torque do you think a turbo 305 would make?

Gene

 

turbo'ing a 305 tbi is like wasting good whip cream on dog **** to make it look good

 

I disagree, with forced induction displacement actually doesn't matter much anymore because you can simply turn up the dial and force more air into the smaller cylinders.

With that said, trying to turbo a stock 305 is a REALLY bad idea. You'll only get to around 350-400 hp before you throw the rods out of the block or melt a hole in the stock cast pistons, this applies to about any stock chevy motor.

If you are going to build a motor to make power, you're back to the old why build a 305 when you can build about any other chevy motor cheaper and make more power.

I myself would build a 3.8 based v-6 as there are plenty of stout pieces available and you'll keep your weight down as well. In theory with a turbo charger a 4-cyl ecotec can make more power than you would ever need on the street so you could go that route and knock a couple hundred pounds off the front end of your car.

 

Im building a nitroused 3.8... but a turbo Ecotec Camaro would be WILD to see

 

Well I am not too worried about the engine, as I am planing on swaping to LS1 in future. I just wanted to have some fun with the current 305 and my friend brought up the idea of turboing it. So I might just grab a TPI from JY swap it in for TBI, unless its less trouble to carb it. The whole project is still in the thinking, I am doing as much research as possible before we work on it. THanks for the input guys. When we get on the works I will be sure to make a blog or something on it.

 

If you're going to get an LS1, don't waste your time truboing a worn out 305 that couldn't handle it anyway. Save your money so you can do the LS1 swap right.