well as the title says im looking for a good cam for a lt1 that will be running no more than 10 psi. thanks everyone

 

What is your goal as far as driving?
Street only?
Street/Strip?
Daily Driver?
Good/stock sounding idle or choppy?
What transmission and rear gears? If automatic, running a high stall TC?

 

1 t3?? I would say find an rv cam lol.

Guessing its a budget build because of a small turbo, so either stock or something small that would not require an expensive valvetrain.

I am perfectly happy with my 305 - it pulls to 6500+ with no issues, sounds great at idle, and isn't much of a pain to tune.

 

yea. im on a budget build... but im not trying to blow anything up in the mean time. lol. so i was thinking a smaller cam. and the 305 seems like it would be good. thanks for the input

 

If you're only running one T3 turbo? ..... you're going to blow that thing apart. Literally

 

blow the turbo apart?
how exactly would you say id do that?

 

I tried running 2 tbird t3s, which are some of the bigger ones you can get. Exhaust back pressure was insane. I don't know for sure why, but I trashed 3-4 of them in a very short period of time before moving on.

There is no way 1 will flow enough on the turbine or compressor side for a 350 motor, its going to be one big restriction all the way around.

Not bashing, just trying to help.

 

I agree, recipe for disaster. Use 1 single T4 turbo.

 

Compressor surge. Basically you overspin the turbo causing it to go well past what the wheel and housing are built to flow. Surge happens when the air flow breaks down and stops the wheel. When that happens you'll either hear the tale tale PSSHHHTTT PSSHHHHT (really fast I might add) In the case of using a turbo that small.. surge gets catasprophic and you'll send parts flying out of the turbo.

Not good.

Budget and Turbosystem are not close friends. You may get by in some areas, but in the end you pay more by replacing parts you should have had to start with. Plan for the worst case scenario and overbuild when you can. If not, you'll be scratching your head. Learn from your mistakes, and listen to those who have already made them.

Good friend told me once "It'll never happen to you, SO don't be suprised when it does!"

 

well i told my good friends what everyone here was saying about the turbo being too small... i heard from a fellow member that a 60 trim is the minimum.... that should be ran on an lt1... this is a hybrid turbo. its a t3/04E. from what i kno it is a 60 trim. thats what the compressor housing has etched on it. so it being too small is still confusing me... ill have an internal wastegate on it.... along with all the other supporting turbo pieces. im doing a budget build yes, but doing it the wrong way with insufficient support im not. so hopefully this will help you guys out. then you can tell me if its stilll too small.

 

you could probably dump it on ebay and buy something bigger with the money.

Just a thought.

 

A 60 t3 is different from a 60 t3/04e and is far different from a 60 t4.

I have worked with some 61 t4s in pairs and would not run one of them single.

To stay away from surge and actually have something that will make enough power to be worthwhile you really can't go much smaller than the good old MP t70. I have seen cars with a GOOD 67 on them make some ok power.

That 60 is a ratio - I'm working on a 88mm setup now with just a little 69 on the compressor side. Its about as big as a hoola hoop.

Post a picture of your turbo, but I already know what you are talking about. Its one of those garrets that was on everything in the 80s. It was designed for a 2 to 2.5l engine. Even running two of them barely would squeek by on a 5.7+. The 5.0 guys have used them in pairs forever, but even then thats a much smaller engine.

 

I agree with the others. I was running a t3 60 trim on my Jet Ski and it was too small for the little 1.5 liter turning 8000 rpm so I upgraded. My T76GTS (one of the largest T4's) is marginally too small for my LT1, so you know a T3 is WAY too small. If you put 2 of them on there, they would still be a little on the small side.

 

well i found a guy who had a t70 and im trading him mine for his, since hes looking for a smaller one for his car.