Twin BW S366 on 427LSX?
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Teching In
Joined: Apr 2008
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Twin BW S366 on 427LSX? Is anyone running the BW S366 (PN 177275) as twins? If so, tell me what you think.... I'm building a 427 LSX with 6 bolt LS7 heads and I just received my turbos...I'm new to turbos, but man they are small compared to my F1R 
With the right ar turbine housing they should be ok...they should be good for 1200+ and spool very quickly. I would have to run the numbers, but that turbo is roughly eqivalent to a gt40r.
I think I might be going with these turbos on my 408 build. Was planning on using the 66/73 turbo with the billet comp wheel. I know the billet wheel turbos are good for 900hp each.
Maybe at certain pressure ratios, but I do not think you would be able to make that on a v8. I could be wrong, but just because a turbo is good for 900 hp on one engine does not necessarily mean it will be good for that on another. Point in case, there are people making 800 at the wheels on a single GT35R turbo on 4 banger, but slap that on a 427 and I would guess it would struggle pretty hard.
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Thread Starter
Teching In
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Any HP goals in mind?
Point in case, there are people making 800 at the wheels on a single GT35R turbo on 4 banger
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Verdad Gallardo You shouldnt have any issues making good darn power with them, as Sarg mentioned "With the right ar turbine housing they should be ok..." They should have no lag at all with your LSeX.
Here is a match that should be pretty close to the S366. It is a 9180 billet wheel, but it will be fairly close still. 17 psi and it is getting close to the edge of the compressor map, but should make some good power! Click the link and it will take you to Borg Warner Matchbot with everything input into it for the most part. It is all to be taken with a grain of salt, but it shows you where it will probably end up on the compressor map at least.
Matchbot 427 twin S366
That is kinda what I was thinking....should be a good all around housing. If you want to tailor it more for higher rpms at the expense of spool (which should not be an issue any ways) then go with the 1.00 or 1.10 housings. With the .91 you are going to have around 27 psi of back pressure at 17 psi of boost. 1.10 will drop that down a bit to around 24-25 psi or so as a guestimate. Sorry I can't be more specific, I have not tried these or seen these on a 427. Is the car going to be a auto or manual transmission car?
Teching In
Joined: Mar 2009
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Dr. Turbo can outfit you with a larger turbine wheel on this turbo if I'm not mistaken. That is if you even need it! On his website, he has a version of this turbo with up to an 81mm turbine but also about 2x the price of the standard S366.
In the right configuration of the entire system, I can't see you making less than 1400 at the wheels. Guys with billet 62mm turbos are making around 1300 with the right complete setup.
Good luck
In the right configuration of the entire system, I can't see you making less than 1400 at the wheels. Guys with billet 62mm turbos are making around 1300 with the right complete setup.
Good luck
Teching In
Joined: Mar 2009
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Ok, maybe I'm the one confused, but I thought the BW wheel nomenclature was to quote the exhaust wheel's Inducer or the largest part of the blades.
So, for example the most popular FI-68 wheel found in the TC76/78 that everyone used to run here a few years ago was the exhaust wheel exducer of 68mm.
So what you are saying is that the BW wheels are really HUGE ???
Just to set the record straight........
You're saying a 81mm/73mm 0.81 trim wheel is available and some are still recommending a 1.0 ish T4 housing in twins ??????? I must be confused.
BTW, I'm learning here too, so thanks!
So, for example the most popular FI-68 wheel found in the TC76/78 that everyone used to run here a few years ago was the exhaust wheel exducer of 68mm.
So what you are saying is that the BW wheels are really HUGE ???
Just to set the record straight........
You're saying a 81mm/73mm 0.81 trim wheel is available and some are still recommending a 1.0 ish T4 housing in twins ??????? I must be confused.
BTW, I'm learning here too, so thanks!
Staging Lane
Joined: Mar 2011
Posts: 59
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From: Austin, Tx
Should be a really fun quick spooling setup. we had a c6Z06 with a lsx427 and 61/65 precisions on it a while back and it was a blast. your setup should make 1200 easy with the right exhaust A/R.
