I'm in the process of gathering parts for my FIRST turbo build and I called Lil John yesterday for a cam and when I told him my setup and what power I wanted to make(800+whp) he said it could be done but I'll be maxing out the turbo and that I should consider like a PT88 so I'll have room to grow since my turbo kit is setup with a t4 flange. Can someone with any experience using or that has used the CEA 7675 tell me how it worked out on a 6.0?
Originally I was going to put it in a 5.3 which I still have but I found a really good deal (after I had already bought the turbo) on a forged 6.0 so I picked it up.
Ls6 intake
317 heads (was going to use 243's on the 5.3)
E85
3,200lbs
T56
Ford 9" 3.90s
Mostly mexico racing with a little track time
Thanks in advance

 

Should run good... And make 850rwhp on E85.

With a six speed, it will spool fast.

 

I think it'll be a little small for 800 wheel and you may run into backpressure issues. The PT88 would be a better choice. I had a 383 with a PT76GTS and it would probably run out of steam around 750rwhp.

 

Yea pt76 would do 800 but it's gonna be on the edge, the pt88 I don't think is that much more and usually always someone selling a good used one.

But IMO I wouldn't even use a precision after their reputation lately. I would go with a s475 in T4 and probably redo downpipe flange to make it work. Cheap and it will make 850 with the big turbine

 

E85 makes a big difference. A member on camaro5.com just made 81xrwhp/80xrwtq @15psi with a comp turbo 78/75 and E85 on his stock bottom end 6.2L SS.

the key is gonna be not restricting the turbo. If running a turbo screen and using a cutout, then you should be able to hit 800-850rwhp. If running a small air filter and no cutout, expect ~750rwhp.

 

Do they make s480's with a t4?

 

yes in 83 or 87 mm turbine. I have one I might sell?

 

I will have to unload this one first unless any one is down to do some trading!

 

Slowlsx which one are you specifically referring to??? I would like to look into it

 

Not sure about this. I made 820/910 with this turbo on my 6.0. I'm making 775/900 right now with a Chinese turbo. It will do fine on a 6.0. And this is with a very soft tuneup.

 

i maxed a 7675 out at 730 wheel on a 5.3
id be suprised if it made that on a 6 liter

i swapped to a t4 borg 76 and picked up 7mph in the 1/8 mile

 

With a 6speed i'd use the 7675. I've had both and PT88 definately spools much slower.

 

Just by another one two is always better then one just saying !!

 

the turbo wasn't the restriction in your setup, especially if you had a m6 tranny.

 

th400 and a heavy rear is why the power looks low,dyno numbers dont mean a lot anyway...
ive gone 151mph with the precision, its an awesome turbo for its size, the only restriction in my setup was the 75mm turbine.

switching from it to the 92 turbine borg picked up a ton of power at the same boost level

 

Yeah, I believe the OP has a manual tranny. 730rwhp is easily achievable with this turbo at his cubes, lots of people have made more on 5.7,6.0,6.2 motors. Keep in mind he is using E85.

quick question, what did you run on the inlet of the turbo? What was the exhaust setup (cutout?)?

 

and E85 isn't going to be doing him any favors when it comes to turbine efficiency.

 

Never said it would. He is looking for a power goal, e85 will easily get him there. More timing = more power.

 

Since you already have the Precision, why don't you run it? You can decide for yourself if you want or need more. Many of the guys on here running $3-400 ching chang variants would love to have a 7675CEA, it is a proven unit. I'm not insulting import turbos here, just stating my beliefs, value turbos have their place, and I'm happy they are in the marketplace. By some the PT7675 is considered the gold standard in its size range, it is what almost all other turbos in this very popular size range are compared to. I believe Lil John knows what he is talking about when he says 800 can be done, but the turbo is maxed out. IMO a turbo should be maxed out. If its not, your leaving something on the table! By having a maxed out set up, it will spool quickly, and be fun on the street. If I were shopping and didn't already have it, I may consider something else, but I wouldn't replace it without even trying it out.

I really wouldn't get hung up on numbers goals. That seems to be what all of the vendors push, have a hp goal, and build to that. I never really did that, my goal was to have a car that is fun to drive and race a little, within my budget. There is really no difference in fun to drive between a 795 hp car and a 805 hp car, and 795hp cars do often beat 805 hp cars at the track too, driver, weight and chassis set up are much bigger factors than a small power difference. In fact its almost impossible for a 805 hp stick to beat a correctly set up 795 hp auto, in the same roller. Your current turbo should be very close to your goal, give or take, and my point is it will be close enough you wont know the difference if you come up a little short, it's not like you'll miss it by enough to care, if you miss it at all.

I think the most important part of a build is where you put your money. There are lots of places to put it that don't do much for you, (like aftermarket coils for example, they look cool but don't do anything oem ones won't)and some people skimp on inexpensive things that really should be done, like a good PCV system that allows you turbo to drain correctly. Save the money you'd spend on upgrading the turbo for something else, you will find out in your build that you'll need to spend money on something you had not planned for.

 

I'm sorry, but this turbo is NOT maxed at 800 on a 6.0. I'm speaking from experience. This turbo coupled with an m6 is good for 850-875 with good timing on E85. This really is a cool turbo.......while it last.