I used the search but no specific answer was founded!
The question is because i bought a garrett Gt42 but when i recive it and measure it is not a GT42. Now i going to send it back and i going to have no turbo for my project. Now i asked the question because my goal is like 750rwhp in a MustangDyno.I going to use forged lq9 with factory lq9 compression with mahle pistons,eagle h rods,patric g cam,ported 317 heads,weiand LS style aluminum manifold,85 mm,31x12x4 intercoller A to A,
3" could side, th400 T/brake 4k stall,3.55 gears.
With that combo is realistic to achive 750rwhp with a S475 ?

 

Can anyone help me with this question?

 

I think so. I've got 120 in the 1/8th on a stock lq9 w/230 230 cam and ls6 manifold w/s475 t6 1.32ar

 

More info on your combo please

 

750 on a Mustang dyno and TH400 is not a feasible goal in my eyes. How about a ET goal that is more easily gauged.

 

Ok i looking to run like 6.2s to 5.8s . It can be realistic?
In the 1/8 mile.

 

You gotta remember th400s and all autos sap alot of power from an engine when on the dyno but they will make up for it on the track and street where it matters.

 

Yes i know but if i can make the Dyno Numbers and palnt the power to the ground in the track the times going to be achived. My intentions is to be in the low 6s high 5s but just asked the question in Dyno power because i thought that more people can have an answer.
But now those low 6s can be done with this combo?

 

It would be close but the turbo would have to be at full boogy to do it.

I'd say 6.2's-5.8's are achieveable goals, but you will need a good set of shocks all the way around, adjustability in your suspension and possibly a good electronic or co2 boost controller.

If the car is full weight it will be harder to do, the lighter it is the easier it will be.

 

Perfect know i have a realistic and specific goal.In the long run i going put adjustable shocks. The car already have adjustable lca,phb and TA. I put the car on a diet it have no AC,ABS,TC,rear seats,carpet and spare tire with jack.
I have no idea how much is going to weigth but i spect to be around 3100 to 3300 the car alone.
If i have to buy a good boost controler is not a problem.
I'm still collecting parts for the build but now i know what i need to finish the project and achiving my goals.

 

Since you don't have a turbo yet, why not buy one that you are sure will do the job?? No point in running a turbo on the ragged edge, when you can get 1 that will do exactly what you want to do.
I'd suggest you contact a turbo supplier and discuss the et up and goals, B4 you spend the money...
AND remember , you WILL want to go faster/quicker, once you get some running time!!

 

i asked about the s475 because i'm i a budged and $650 is hard to beat for prerformance it can gives. A s480 is $200 both that difference in price can worth in performance over a s475?

 

Should be able to run that with ease if the combo is right. I know of a 4850 lb 4x4 truck that's been 6.20 with a similar Garrett GT76/94/.96T4. Factory bottom end lq4.

 

should be close, id try it if not happy you can go bigger comp later but id stay t6

 

You can do it for sure with a S475 T6 1.32. No doubt.

Talk to Randy at Leash electronics for a boost leash and a co2 set-up that will be the ultimate ticket that makes it repeatable and consistent in running fast. No one likes spinning or struggling to meet their goals.

I was making my 5.8-6.2 comment based on a full weight 3500-3600 pound car with driver. If you can get it between 3300-3400 with driver you will have no problem what so ever meeting your goal.

There are 10 or more local turbo cars in RS275 with that same turbo that weigh 3200-3300 that run 5.30's-5.50's all day long with no boost controller at all.

 

hi mate i run an s475 t6 1.32ar standard cover on an lq9!!!! 408ci tho!!! have made what you are asking on the dyno with th400 and run 6.2s@114mph @4000pd takes close to 20psi to do it tho!!! cheers

 

It can be done with the 75mm unit. I would spring for the 80mm unit though as it will make it easier to achieve that power.

 

Yes, I'm running a s475 on a lt1 made 670@14 thru Th400 with stock ported heads and bone stock intake and ran 6.2's leaving easy first time out.

 

I have a s475 for sale if your interested pm me

 

Wow now i'm very motivated to finish the car . I going to be the first turbo Ls1 f body in my area .
Dr Turbo, is a big posibility that i going to with 80mm. Sent you a PM!