Im looking for a camaro sselling my eclipse gsx turbo if anyone is intersted, and looking for a camaro probly with a 305 cause its harder to find a cheap 350 around here, anyway what would be better to mess aorund with if i got the 305, Carb, Tbi, or Tpi im not looking for crazy horsepower but mabey through on some heads and a cam and some exhaust...

 

why would you be selling your GSX????



your crazy

 

It's kind of a personal opinion really. I like carbs (all mechanical, no computer controlled stuff) because I think they're easier to work on, tune, and cheaper. However I'll list the pros and cons of each.

TPI
Pros: Good low end power, great response, no problems running on a cold morning, don't have to warm it up, good fuel economy
Cons: Once you get to 4k rpms you hit "wall", harder to work on, more exspensive, aftermarket tpi setups (for hi-performance) are pretty exspensive

TBI:
Pros: Fuel injection that works like a carb, decent fuel economy of the 3, doesn't have to warm up in the morning, good throttle response
Cons: I wouldn't reccomend the stock TBI for performance applications, performance parts are exspensive, stock unit doesn't flow very much/well

Carb
Pros: all mechanical, easy to work on, parts are cheap, overall easier to tune/setup than fuel injection (no fuel maps, etc.)
Cons: Lower mileage than FI, stock QuadraJets suck (I don't care for them, I'd rather have a good holley DP), they are difficult to work on if you have no experience with carbs, tuning can be tricky on some carbs (cough holley cough, edelbrock is easier though)

I'm sure there's plenty more, anyone feel free to add to these. What I stated above are not necessarily facts, some are personal opinions.

 

Computer controlled carb (CC carb, CC q-jet):
Pros: Feed-back system like EFI with performance capability of carb. All 3rd gens sold in U.S. with a carb had the CC q-jet. For economy/emissions, operates & tunes like EFI (sort of). For power, tunes like non-CC q-jet (mostly). '85-later and all L69 versions came with knock sensor.
Cons: People didn't like working with them, aftermarket didn't get on board with them. EFI systems came around about the time the above decided CC carb wasn't so bad afterall. Ignition advance tuning limited to PROM. LG4 versions came with horrible air cleaner, cam, and exhaust.

 

How much hp is not crazy hp? 250 hp 275 hp 300hp? How fast (N/A) do you want to go? high 14s, low 14s, 13s? Do you want to have a 5 speed? Is money a serious issue?

For 250 hp:

I'd go TPI b/c you only need cat-back/headers and air filter mods(CAI) and that should give you mid 14s at 94-96 mph. Plus most TPI cars will have beefy suspension stock and posi stock. The TPI 5 speeds have a good cam stock. Great throttle response.

cons: The TPI intake looks cool, but is a pain to work on (think hours to just get the intake manifold off). The TPI expensive to mod. Think $300-600 for aftermarket intake pieces vs. $100-200 for complete carb/TBI intakes. MAF cost a lot of $$$.

If you ever want to rev your engine and make power in the 5000+ rpm range(not that you need to) don't get a TPI it won't make power up there.

The TBI cars have a lot of things(bolt-ons mostly) that NEED to be done to make any power at all mainly the exhaust.

 

no one here has mentioned an LT1 nice aftermarket easily retrofitted to bolt onto an sbc 350 great low end and high and pretty cheap.......EBAY.

 

Its not the tbi itself that doesnt make power,its the engine that the tbi is attached to that came in most of the tbi cars. TPI is generally the best fuel injection on a third gen, but it is also the most expensive. TBI is cheap to work on and modify and is very reliable, but generally the engines that come with the cars are crap. Carb cars are the cheapest to work on and tune, but the better driveability of fuel injection is gone and economy will suffer. Its basically an opinion in what your plans are for the car.

 

fuel injection generally will make a little more power. less restiction on the TB since it doesn't have the venturi sticking in the way. also you have better atomizing of the fuel, and better a/f ratio control. which also leads to better fuel econ. and due to not working with vacuume to draw the fuel into the intake and instead working on tables you can get a little brouder of a powerband. and I'm refering to not TBI fuel inject... no bastard units here. oh yeah fuel injection works better with high compression, or forced induction... in my eyes at least

carb is cheaper to work on... easier to work on. if you get it setup right it will still come close to a fuel injection unit for mild builds. cold weather sux

 

I was wanting mabey 3-350 hp wihtout a power adder, on a 305 then add mabey a 50-100 shot later on,

 

I hope you have lots of $$$$$$. Those power levels are reachable with a 305 but its going to take a lot of coin to get there. And if you want a 5 speed forget it. It wont hold up long to that much power. An aftermarket T56 would though.

 

just to let you guys know I had a GSX still do and the engine blew. There not that great of cars I liked my firebird better so I went and bought a firebird.