jarednut4ever

iTrader: (14)

specs are.
Compressor Wheel 76mm .80 a/r 4” Inlet and 2.5” Compressor Outlet Inducer- 76.71mm Exducer- 102.36mm

Exhaust Side:

Exhaust Housing T-4 Flanged Divided Available in 2 A/R sizes - .81 3.0" Vband outlet Inducer- 74.5mm Exducer- 60.56mm


Before I take this cam out I really need to know what you guys think and if it carry 6500 rpm with this setup. or if a stock ls1 cam or ls6 cam would be better.

chiaj144

iTrader: (4)

Good for you. With my setup the car was faster period. Did it make more power? No. By the time I could get the extra power to the ground the stock cam was already gone. If I can get the suspension dialed in and leave off the brake I know the bigger cam will be faster.

jarednut4ever

iTrader: (14)

I am just needing some expert advise. I am hearing 2 different things and have researched it and found that big cams seem to gain with boost but you have to have the right turbo. I don't want to build this with the ms3 cam and it only makes 450 horse. Cause I know a triple 12 cam or even a ls6 cam can make 620-650 with this turbo. But since the motor is all together I was going to try it with the ms3 and see what happens but im unsure at this point. please help.

3pedals

iTrader: (3)

That turbo will choke out even a stock cam. Keep your cam, gears, and converter, and get a BW S 475 / 96 1.32, since they are cheap. And if you want to spend a tiny bit more, get the 1.1a/r ex housing for it from Forced Inductions.
Then you will have a monster that happily revs and shifts at 71-7200.
My .02

jarednut4ever

iTrader: (14)

this turbo wont work with even 10-13 psi. Im not looking for all out. Just something that runs good and can wrap to 6500 rpm. but if I need a different turbo I will go that route.

3pedals

iTrader: (3)

It might make that boost, but your rpms are going to be choked. Im going to take a WAG that it wont rev past 5500.
You can run this turbo, but you'll want a stock cam, and the matching gears, converter.

jt_2002_ta

iTrader: (3)

I too am interested in this.... I have a 5.7 w/ the ms3 that I would like to turbo.

jarednut4ever

iTrader: (14)

Well After talking to several people and such through here and other places. I think I am seeking a different turbo. I'll keep you all posted.

Jake99

iTrader: (2)

You dont really need much cam to get your engine to out flow the exhaust side of the turbo, I ran the 212-212 112 cam on my 4.8 with a 78/75 1.15 turbo, it made 730rw with an open loose converter. I shifted it at 6500 but it peaked out at 5800 on the dyno. 1.60 short time off the foot brake in a full size truck. What im getting at is setup your cam to spool the turbo, don't worry about 10 extra hp up top that's what we got boost for! You can hit 600rw with that turbo you will just have to shift at 5500

jarednut4ever

iTrader: (14)

Ya But my problem is my converter will be to loose and I dont have enough gear to finish the 1/4 mile. I really need to be able to shift around 6500- 6800 rpm.

yenkm68

iTrader: (1)

I picked up .5 of a second and 8 mph switching from an ls7 cam to a custom tick cam in my 5.3 with a on3 76mm on the same boost.On paper it makes 1 hp but I don't give a **** what the dyno says, at the track it's night and day differance and even better on the street. Best 400 I spent!!!!! 10.15@134mph on 12.5 lbs

nocooler

iTrader: (5)

Converter might not even work with the turbo - if it's loose you'll probably just blow thru it.

stock48

iTrader: (17)

With a big cam like that you want a big hot side and turbine like a S475/96, 1.32. I don't think it will like the small back side of that turbo.

jarednut4ever

iTrader: (14)

ok was wrong on the turbo I have. It is a 81ar inlet and 1.00 exhaust. 76mm turbo. I think I might try it as I have it all already. It might choke up top with over 15 psi but I am only looking for 9-10 psi or 525 to 550 horsepower at the wheels. what do you guys think.

Siggy25

Dyno comparison on my 4.8 with borg s366 turbo and a 238/244 dura, 605/612 lift, 114+2 vs ls6 cam. The big cam is the red dyno file and ls6 is the blue file. http://s1105.photobucket.com/user/fbodyjunkie06/media/StevenSigmoncompare_zps42a612c9.jpg.html

Siggy25

That pic is blurry as chit here is a better pic.
https://ls1tech.com/forums/showthread.php?t=1689652&page=8#PhotoSwipe14036601 21209

jarednut4ever

iTrader: (14)

so it looks like power was similar above 5k. that is not bad numbers for 8.5 psi. And a 5.3 should make 20-30 more horsepower then a 4.8. So even with my small turbo 500 at the wheels on 9-10 psi should be doable and since my converter flashes to around 3600-3800 it might run good.

Siggy25

The ls6 cam helped me out on the low end on the street but that thing pulled harder with the big cam up top. Even though the dyno sheet says only a 15hp diff, the big cam pulled way harder on the street. Can't complain to much with the ls6 cam, the drivability is awesome.

jarednut4ever

iTrader: (14)

that's good to hear. plus it looked like it pulls til 6500+ rpm. My cam is almost the same as what you had but with my engine being larger it might start to make power sooner.

3pedals

iTrader: (3)

you stated your turbo specs as 60.56mm exducer on the turbine - that is WAY small,
you will not be happy with it, even if you only have low hp goals.
I'm trying to save you some headache