Tony Shepherd

iTrader: (4)

I need some experienced advice here. I am a long time nitrous guy wanting to go turbo.

I am starting to make plans for my turbo build next year. Would like to know the best way to do this with what size, brand, turbo or turbos? Flanges? Single or twin?..................etc. What intercooler setup? Injectors?

Here is the engine/tranny combo.

396 ci LT1, AFR 235 heads 70cc (flow 340cfm), Supervic single plane fully worked, will have Cola 3.875" forged crank, Oliver rods, JE custom dished pistons, Hell fire rings, 9.0:1 , Jesel shaft mount rockers, solid roller custom cam, power-glide w/t-brake, 9" with 3.55's, FAST XFI engine management, Aeromotive A1000 fuel pump, -10 feed/-6 return, sumped stock tank.........etc.

Goal is to make 1400+rwhp.

I am a newbie to forced induction and would like some experienced guys to chime in please.

What would you go with and why?

Thanks

Tony Shepherd

JAX04

iTrader: (17)

God i wish i could offer some great advice for ya, but i must say, i def anticipate this build thread, and best of luck to you!!! I cannot wait to see some vids and dyno graphs!

HUNTER02SS

iTrader: (24)

A single T6 106mm Turbonetics turbo, 1800hp A/W Chiseled performance intercooler, 5 Gallon ice tank for A/W, 160lb injectors should get you there as well. 60mm wastegate,BOV, Another fuel pump as well.

Tony Shepherd

iTrader: (4)

Thanks for the info! Would a 106 be too large though?

KCFormula

iTrader: (4)

Are you set on going with a LT1 block? If you do I would have the block sonic checked and try to keep the overbore as minimal as possible both for headgasket between the bores and wall thickness. For sure going to need splayed mains. I think Big Rick was running around that HP level and having trouble with the blocks. I've never ran a FI LT1 but I do remember the tops of the cyl walls mushrooming out with high compression.
You need to look into either running two A1000's or an A1200 (eliminator) pump as I don't believe you can get much more than 1000rwhp out of one even with -10 line.
Good luck.

HUNTER02SS

iTrader: (24)

A 94mm is rated to 1750hp, which is what I have. A 98mm turbo would work also, but if you want 1400rwhp, I would go larger and have some room to grow and this way your not working the turbo so hard to get to your goal.

Tony Shepherd

iTrader: (4)

I have all my LT1 blocks sonic checked and half fill them. Full billet main splays front, centers, and rear with a girdle. I was worried about the single pump. Looks like I will need to upgrade it.

Thanks

98Z28CobraKiller

iTrader: (17)

Your biggest problem is going to be squeezing a big ole thumper in there between the radiator and the motor. You'll need to get creative if you go this route. It is easier to package twins in these cars.

As far as pumps go, a single MagnaFuel MP-4303 will supply the neccesary amount of fuel unless you intend to use corn.

If you do any class racing, check the rules before you decide on which way to go.

DrTurbo

iTrader: (3)

A Garrett, Precision or Turbonetics 106 will do that no problem. All are virtually the same and all will make 1400rwhp.

daniel6718

iTrader: (36)

a2w under the dash leaved plenty of room under the bumper for a turbo

4SFEDZ

iTrader: (6)

you dont think yalls 94mm will get there?

4SFEDZ

iTrader: (6)

hmmmm, twin 76's would get u there and be easier to package!

Beaflag VonRathburg

iTrader: (176)

^ In a TC flanged unit. The standards are a little larger and can be tricky. I would probably go straight to the 106 like everyone else has mentioned. 1400+ rwhp through a glide is a lot of power.

Tony Shepherd

iTrader: (4)

I am kinda leaning towards a single. What is the drawbacks of a 106 ? spool time?

RealQuick

iTrader: (14)

Twin Precision T76GTS's
50mm JGS wastegates (or equivalent)
Big A2W IC
160# injectors?

I would dig up Big Rick's build as he was around that hp level... although I believe he did it with a single PT91.5mm. Hopefully you can find some of his engine/fuel setups though.

4SFEDZ

iTrader: (6)

man i dont think you would max a 91-94mm out, they move alot of air. i would think you would have block problems before the turbo would be done.

stevensLS1

iTrader: (2)

I have no real advice here but are you looking to run in a certain class where they might allow only a certain size turbo or just looking for a fun fast car. Maybe something to consider so you only have to build it once. Good luck either way!

Navy David SS

iTrader: (13)

This is what I have learned going through 3 turbo builds. Always go bigger than you expect you need - if you don't you will end up spending more later.

Your engine sounds good. You will not know until you try it. Rear end, tranny (as long as it is built for the 1400rwhp you want).

Go with the 106MM. Go with the MagaFuel 750 (the big sucker). I would seriously look at a different computer set up (either BIG Stuff or AEM). Go with a good boost controller (AMS1000). Twin blow off and twin waste gates. A2W intercooler.

Fuel: E98 - more hp - $2.00 a gal; C116 - $15.00 gal. If you are going to run locally E98 is the way to go.

Be prepared to spend more $$ than you expect.

Hold on for a run that nitrous hasn't given to you before.

David

HUNTER02SS

iTrader: (24)

I totally agree 150% on Davids statement!!
BTW, I havn't seen you posting up much David? I hope you are doing well!

Tony Shepherd

iTrader: (4)

Thanks...I have been looking into his setup some.

I think the block will hold fine.

That is something I will look into for sure.


Good info. Whats wrong with my FAST XFI ?