I want to make 550ish at the wheels on a 355 with ~15 lbs of boost. Motor will be a 355 with 9:1 compressions(should it be higher?). 224/236 cam with my LE1 heads. I want low end and dont really plan to rev it much past 6200 rpm. I cant decide if I want to the a P1SC or a turbo setup. Will either one get me there? If i want a turbo would a t-76 be to big to give me low end, where would the boost come in. How does a supercharger act on the low end? Car is mostly a cruiser/weekend drive with a trip to the track every 6-8 months.

 

You will want to get the D-1sc, instead of the P1sc to give you a much better chance of meeting your horsepower & boost goals. You should be able to do it with the D-1sc. As long as the motor is all forged...

The compression being at 9.0:1 should be fine. If its not together yet, you may even want to go a bit lower so you can really crank up the boost.

Also, make sure that your tune is good. Good luck!

 

the d1 will get you there, that or a t trim would work

 

The cheapest way to get there is to contact "realquick" on here and have him build your hot side parts, buy a MP T70 with a .68a/r, at 10-12 psi you should hit your goals and once you get bored with that its pretty easy to jump up to the T76 and shoot for 750-800 and once you get bored with that bolt on the S400 with a .96 or 1.10 housing and hit 1000+.

Im in the same boat, my hp goals are 550-650 and I reasearch what option would be better for me SC or Turbo and I decided the turbo would cost less and give me the room to grow.

 

If I go turbo I will be building my hotside parts. So I think I can do the turbo cheaper. I just need to decide if I want to do all the custom work or just bolt something on.

 

Custom work FTW! In the end its a great feeling of accomplishment. I cant wait to get started actually fabbing mine. Im hoping this sunday to start.

If you can fab it will def be cheaper to go with a turbo. If you want to bolt something together I still think itll be cheaper with Jon doing the hotside and you fabing the rest. you may be able to find a used SC kit for about the same price but for bran new there isnt a chance.

 

A t76 should EASILY get you there. Times in my sig on 11.5lbs, T76, and stock heads/cam

 

Thanks for the shoutout Troy!

jchevy - Justin is right. If you go with a T76 with the motor you described... you could probably hit 550rwhp @ 8-10psi. Alot will depend on the kit, but full boost on a T76 should be ~ 3500rpm. This is always deceiving though... because full boost rpm will be different given which gear you are in and what load is on the car.

If you want to make a kit, I can offer some good advice. Feel free to email me with questions: jon@lt1boost.net

If you wanre interested in something cheap, I have a cast manifold kit on my webpage at the bottom that comes with a JGS40mm wastegate for a cheap price. Its a kit I made a year ago, so the welds arent super pretty, but it will make good power.

http://lt1boost.net/discounted_kits

Jon

 

How would a T-67 work, I just heard from a friend and may be able to get an intercooler, wastegate, bov, and ball bearing watercooled turbo for a good deal. Opinions, the price is right

 

The T67 will be done at 600rwhp. You would be pushing that turbo to get 600rwhp though... probably 15psi.

BTW, the cast kit I showed will take a standard Precision/turbonetics/innovative T60 thru T76 with vband for 3" DP.

Make sure the turbo isnt an ebay special. Did your friend say which brand turbo it is?

 

Its a garret turbo. So I would be pushing it to get 15 psi out of it?
The t-67 will spool quickly thought right? So i will have lots of low end? I'd Trade a top end HP for low end TQ

As far as you kits go i would love to buy one that would let me keep my A/C but Ive noticed that you are way backed up right now. And I cant wait

 

Here are the specs on the turbo.

Its practically new.

Garret 67 mm (makes it a t-67?), water cooled, with .96 a/r

come with a 50mm bov, and 44mm waste gate.

Intercooler is 24 x 12 x 3

After some more research is that a/r to high to make low end boost?

 

That A/r is fine for your cubes. What size flange is on the turbine (for the DP)?

 

yeah im looking for the same hp range, 550-650, also with the ability to step higher if needed...(or wanted)...I will be buying Jon's cast kit and either throwing a turbonetics t76, or a master power turbo, depending how much is left after the motor build

 

DP is setup for a T60-T76. If you want a Master Power T70, the DP will need to be change a little ($$). You wont regret going with a turbonetics T76.

Jon