98CamZ28

iTrader: (31)

Hi!

I've been driving myself mad trying to reach the correct answer. I've reached out to a couple well-known vendors as well and had different advice from them regarding which twins to get, so i'll open it up to the public to hear your experiences. Here's my build plan:

1973 Camaro
6.0 lq4 sbe (for now, new forged build possible in future, probably less than 400ci)
4l80 w/single disc billet converter
92MM Holley Hi Ram w/ NW 92mm TB
Treadstone A/A intercooler
Transbrake
2 Step
Custom Cam
Magnafuel 4303
ID1700 or ID2000 injectors
e85 / Flex Fuel
Tial 44mm MV-R gates/50mm BOV

The primary goal of this car is to be a fun street car to take my kid in (he's 14months old and already has his own Recaro car seat haha). I want quick spool for the street, but I (like everyone else) want at least 1000rwhp capability for the future. I would still like to be able to go to the drag strip every couple months or so and lay out a good number.

So, with the same goals as many people, i'm looking for the right sized twins for my application. Here are a couple I was thinking of and discussed:

S362 - cast, 68mm turbine wheel - should spool quick, hear different opinions on rwhp capability
S366 - cast, 68mm turbine wheel - slower spool, definitely 1000rwhp capable with room to grow
S366 - sxe, billet, 73mm turbine - ? not sure how that would compare to the other two, I know the HP limit is higher than i'll be, but i'm curious how the spool is compared to the s362. Maybe the answer is a billet S366 /68mm turbine?

I'm open to suggestions, but I would like to keep it in the Borg family. I've had Borg before and was happy, now i'd like twins

The only other item is are the billet units worth the price of entry compared to the cast units for a street car that is mostly looking for good street manners? From what i've priced, it's over a 50% price increase. I'm not opposed to it, but it definitely hits the budget a bit harder

Blah! Too many options to have an awesome time!! Here are a few pics too!

Thanks,
Josh

98CamZ28

iTrader: (31)

Few Pics

shawnc16

2 S257's T4 .83 A/R. 2" hotside pipes. Instant spool

stevieturbo

S362FMW

Whilst the old heavy cast units can work too....I just see little point when the FMW's are only a little more, and a much better unit. They'll spool faster, flow more air and have better bearing systems.
It also uses a slightly smaller housing, which can make packaging a little easier.

Almost_There_1

iTrader: (2)

^this. The pricing on the sxe units is still cheaper than comparable turbonetics or precision unit.

stevieturbo

SXE's are a little different, as they use a larger compressor cover than the older 362FMW but are essentially the same core.

98CamZ28

iTrader: (31)

Thanks for the responses guys!

98CamZ28

iTrader: (31)

Any other opinions?

LJMSJohn

FMW wont spool faster or flow more air... its the same wheel design as the cast wheel.

LJMSJohn

Odds are a 366 won't spool any different than a 362. 4mm on the inducer when the exducer is the same... just isnt enough to affect it.


do the S366's with the 68mm turbine wheels and a .88 housing.

stevieturbo

So there is a cast 362 ?

Any side by side comparisons of those compressor wheels ?

stevieturbo

Is the exducer on the 366 not 92mm ?

The 362FMW is around 84mm ?

That's a good difference. Or have BW got their info wrong ?

LJMSJohn

All I speak on are the cast wheel versions... the FMW wheels arent even worth considering.. and Yes there is a cast 62/63mm wheel. Depending where you look it up at is what size it is.

You're muddling comparison points all together when thats not what i was doing. I wasnt comparing exducers of the FMW to the other two... only the wheel design.

Forcefed86

iTrader: (4)

With the S366SX-E line being cheapish now I'd go that route. The super cores on the S366 are down to $583 shipped. The s369 super cores are $643. (thats without the exhaust housing)

stevieturbo

They are insanely cheap.

But to say the cast units are same design as the FMW's....I guess is just the same as saying every compressor wheel in the world is the same design.

The FMW/SXE compressor wheels are different than their cast counterparts though. And given they're smaller on both inducer and exducer for same airflow ratings, they're bound to spool faster in every case.

I really cant see any reason to consider the older cast units vs the more modern stuff, unless they are diabolically cheap. ( that isnt to say they arent solid performers though )

98CamZ28

iTrader: (31)

Thank you guys, these are all very helpful posts. It will definitely help me make a decision

Newbomb

iTrader: (6)

Reach down into your purse and grab a pair....of S472's

need4speed069

iTrader: (3)

Just curious if you ever made a decision on the turbo choice.

98CamZ28

iTrader: (31)

I did. I purchased a pair of S362 SX-E's with 68mm exhaust using a .88 housing. They should still make plenty of power and have good response around town. Plus, I paid $1490 shipped new for both supercore's and turbine housings

need4speed069

iTrader: (3)

That's the best deal I have heard about any chance you can tell me where you got them from.

Thanks Al