1toofastlt1

iTrader: (4)

I have a 383 9:1 cr with a 220/230 cam stock ported heads. Im gathering parts for a rear mount turbo set up. I have a master power t70 with a .96 ar exhaust. And I have my eye on a master power t76 with a 1.00 exhaust. My goals are 600-700 rwhp. What turbo would you choose for my set up

1toofastlt1

iTrader: (4)

Anyone?

HRHohio

Bigger is better in this case. I'd run the T76 with the 1.00 housing. Another option is the On3 76mm with the .96 housing.

1toofastlt1

iTrader: (4)

Hmm on3 76 sounds good. Are those good turbos? Im new to turbos so thanks for the help

HRHohio

They've had pretty good success so far. There are several with builds on here. Good budget turbo. I like mine. lol I'm going to do twin 70s on my 72 Camaro build. Look up Wicked69 and his Chevelle. They've done good for him too. I believe they're copies of the MasterPower series turbos.

itsslow98

iTrader: (18)

76 for sure on a 383. Not a fan of on3 turbos personally and if you can afford a turbonetics or precision I think youll be much better off.

stock48

iTrader: (17)

If you could fit a S475/83/ 1.0 ~1.1 T4 back there it would be worth the extra $.

jridenour31

You need a bigger turbine than those turbos have.

1toofastlt1

iTrader: (4)

Ok thanks for the info.

itsslow98

iTrader: (18)

On a rear mount setup? I disagree but Im not a rear mount expert.

Blackpanther99

iTrader: (8)

T76 with the 1.00 housing or the PT 76mm with a .96housing will work good also.

Ferocity02

iTrader: (60)

The MP T70 and T76 are the same physical size. So if you have the T70 already why not try it first? But you will probably find that it's too small for your goals. I believe the On3 76 and Turbonetics TC76 are the same physical size as well. If you find you need more exhaust then Turbonetics has their new 7675 that will also fit.

jridenour31

Yes, the turbine is too small as a front or rear mount, especially on a 383. A BW s475 with the 83mm turbine is a much better choice, although the turbine is still a little small.

1toofastlt1

iTrader: (4)

Ok sense im on a really tight budget I was thinking the on3 76 and I can sell the mp t70

1toofastlt1

iTrader: (4)

Jridenour31 wouldnt the s475 have a lot of lag? I want it to make boost in the low rpms. I only shift at 6000-6300

jridenour31

No, it wouldn't. Although it won't spool as quickly as those p-trims, it will still spool very quickly with the 83mm turbine and 1.1 a/r housing, especially with a 383 and the right cam. Those small turbines run into backpressure issues very quickly on a 6.0 and you've got another 19 inches making it even worse. An s475 with 83mm turbine is very similar to a 7675 and those spool almost instantly.