OEF14vette

I originally had planned on doing a twin turbo 370 but ended up scoring a 4.00" 58X eagle crank for $400.00 brand new delivered to my door from a vendor so I decided what the hell lets try it.. So I had my turbos planned out for the 370 but now with the extra cubes I'm not sure what would be a decent setup. Car is an in progress build 88 Notch mustang moly 25.5 street car TH400 3.08 or 3.28 gear should be 2900lbs or less and everything will be controlled with MS3Pro, E85 fuel, Water Meth to keep it safe, Air to Air as of now. I was drawn to the Borg Warner SXE S369 or S371 since its a forged wheel already and the price is very affordable. I want the ability to make 1300-1400 wheel HP and get into the 7's without breaking the bank. It wont live its life at 13-1400 just want the ability to make that without choking the turbos. If anyone has any experience or advice with twins on a low 400" engine I'm all ears. Thanks in advance

svslow

Are you set on twins? A new Forced Inductions s400 with the 100mm turbine would get you to your goals.

OEF14vette

I guess I'm not set on twins, was just advised they would have better street manners. I can get a pair if the s369 with the open t4 .88 exhaust housing for $1658.00 shipped so that price point was appealing to me. Last FI unit I checked into was $2200, so the $550 savings would be nice since the fab work for twins is not a deal breaker and I tig and have a bender. But i am not opposed to a single if that's the hot ticket. I just do not want slow spool and make good peak numbers but be a slug throughout the rpm range.

Project GatTagO

iTrader: (7)

I have no opinion on this, other than I did notice that BW added a S372sxe in the most recent catalog.

Andrew

transam69230

iTrader: (49)

I have a 402 with a pair of Work Turbo s374s, car made 1250rwhp on the dyno spinning, shut the pull down at 6500rpm and was suppose to rev to 7500rpm.

Street manners don't bother me much, if i am roll racing i am brake boosting the car so spool time is basically irrelevant.

OEF14vette

Are your s374's billet or cast? What exhaust housing do you have? When driving normal or casual does it seem lazy? I also 1/8 mile drag on ice so I need to be able to ramp in and also ramp out power easily so a unit that comes on like a 2 stroke will be tough to get down the track. Appreciate the replies

transam69230

iTrader: (49)

They are billet wheels with a .96AR gt42 ( Garrett ) exhaust housing. Ramping power in and out is easy with a Holley Dominator setup, the ecu is setup to remove/add timing when necessary.

If I am going to race someone i brake boost the car. I don't really get the obsession with the whole " does it spool fast" , cause if you are racing someone and you aren't brake boost you are going to most likely loose. I am in boost already, so the turbos are spooled up.

You are going to want something smaller ( or build a bigger motor) or a supercharger if you want 2 stroke type of response.

OEF14vette

I have the MS3PRO so I will be able to control things effectively I hope. As for the 2 stroke like power band that's what I do not want. It sounds like your setup may fit the bill, any other details on it or link to a build thread?

OEF14vette

which S400 would you recommend an 85? 88? I've seen others running GT55 94mm but thought that was a little much but then again that's why I'm asking because I'm relatively new to turbo ls deals.

ls3fox

marks notch went 7.70s with a 403 and a single s485

OEF14vette

Yeah I followed every post of that car damn impressive that's what I'm going for but without copying it I guess. Just curious if their has been a combo that was even better since 3-4 years ago. Or if twins would light quicker and yield likewise or better results.

transam69230

iTrader: (49)

I stepped down from a 427ci to a 402 ( 3.75 stroke x 4.130 bore ) , it is a dart ls next, powerglide, and twin s374s. Details are in the signature for what i got going on. Haven't been on a prepped track this year to see what the combo can really do but I am hoping for 5.2x in the 1/8th at 3800lbs raceweight.

OEF14vette

Nice, that's moving for the weight. I think I may give the S374's or the S372's mentioned above. I don't think I need 1800 hp worth of turbo when the block/head gaskets will be hard pressed to stay together at that being I'm using a 4 bolt GM block. Thanks again for the insight on your combo.

OEF14vette

Did you happen to see pricing on the S372? And is it also sold as a super core without the exhaust housing? And which housing do you guys think would work best? I was thinking the .88 open.

Project GatTagO

iTrader: (7)

The supercore PN is listed as 13009095091 in the BW catalog. I am sure you can shop around for pricing. They accept the same turbine housings as the S369sxe.

Andrew

stevieturbo

https://agpturbo.com/borg-warner-s37...3-13009095091/

Unless you needed a divided scroll for whatever reason, the 0.88 probably makes the most sense. Or AGP offer their 0.96 open housing too.

Although hard to say how much difference there really is there, as there are clear design differences between the two which IMO make the A/R not comparable.

The hole in their 0.96 is more oval, but does look larger, however the diameter of the scroll itself would seem more compact and hence smaller, which in turn also affects A/R.

I did swap but TBH never really noticed any difference.