LB7: 1058 and what turbo???

[BowtieClub]

I recently got my Suncoast 1058 converter along with my trans kit, and I'm wondering what turbo would match my converter. I want something that spools well and more importantly, doesn't smoke! I was looking at a s472 for a while, but the more I think about it, the more the s472 seems like a poor choice. I was thinking something like the II Silver Bullet s366 would be a good choice?

Would the 1058 be too loose for a s475/stock compound setup? I didn't want to go with the twin setup because its a good bit more than the s366 setup, but if it's that much better.... :dontknow:

Any and all insight would be helpful! (Also, the truck is stock height with 265's, and the most I tow is 8-10k.) Thanks!

 

[DMAXchris]

I run a 58 with an s475 single. Works great! I know of several other trucks with 400 frame singles running that converter also. It couples good for daily driving and can brake stall to around 2400.

 

[BowtieClub]

Good to hear, but with stock fueling, wouldn't a +70mm turbo be a dog out of the hole, even with a loose converter? What about a s466/s468 with the 83mm wheel and .9 AR, that seems like a good compromise between the strength of an s400 and the spoolability of the s300 chassis?

I'm not scared of going to a bigger charger, but +70mm turbo seems to be unnecessary for a stock internal LB7 with 235k on it.

Also, I might add that I don't pull so I have no inducer restrictions to worry about.

 

[BowtieClub]

Bump for more opinions.

 

[LWATSON]

With the proper tuning a big single is a blast to drive and not the smoky sluggish pig everyone thinks it is.

 

[LWATSON]

I don't know how to post a youtube vid but go there and search LWATSON Duramax billet S475. That is a 0-90 run with my tow tune, dead standstill off idle. No power braking.

 

[BowtieClub]

Ok, so it seems that spool-up at WOT is good, but what about around town? Like in the 0-10psi range, would you describe normal driving as "dealing with it?"

Thanks

 

[Big Chris]

I have the s366 your looking at. IMO it is a very good daily driver, towing, plows snow, etc still use the truck as a truck turbo. I have an AT'S 5 Star torque converter (1750 stall iirc), which is quite a bit tighter than your 1058, and it spools very fast. I have the stock TCM tune. IMO read coker6303's turbo lag thread before you buy a turbo. There is a lot of good info in it.

 

[DaJokr]

When I talked to Mike about my plans for my truck, I told him I was planning on doing an s475/stock down the road. He said it would work fine (sc 1058) with the stocker on its own and also with the twin setup I chose.

 

[meshanic]

Not taking anything away from anybody but I had the silver 66 for almost a year. I now have a double batmo 472. IMO the 72 is ten times the turbo the 366 was. Cleaner running too. Not sluggish once I got the tuning dialed in for the 5" intake. 472 or 475 & you'll never look back.

 

[minerigger]

Not taking anything away from anybody but I had the silver 66 for almost a year. I now have a double batmo 472. IMO the 72 is ten times the turbo the 366 was. Cleaner running too. Not sluggish once I got the tuning dialed in for the 5" intake. 472 or 475 & you'll never look back.

472 is my next charger...gotta take baby steps or the GF will kill me

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[mike diesel]

Not taking anything away from anybody but I had the silver 66 for almost a year. I now have a double batmo 472. IMO the 72 is ten times the turbo the 366 was. Cleaner running too. Not sluggish once I got the tuning dialed in for the 5" intake. 472 or 475 & you'll never look back.

Yup, s472 here and absolutely love it. WAY better than my Danville 72 ever was. I almost went with the industrial injection silver 66 kit then this s472 kit popped up on the forum for sale and I jumped on it. LOVE IT.

 

[meshanic]

She won't kill you..... I'm living proof they don't REALLY ever do it

 

[mike diesel]

And a suncoast 1058 will be my next converter if my ml craps out on me. I've almost bought a 1058 a few times but didn't have a core to send in so I've been holding off till one pops up for sale with no core charge.

 

[mike diesel]

472 is my next charger...gotta take baby steps or the GF will kill me

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It's easier to ask for forgiveness than permission....

 

[minerigger]

It's easier to ask for forgiveness than permission....

I say that all the time... you should see the dirty looks she gives me haha

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[mike diesel]

Haha my woman has heard "sorry I had to" A TON OF TIMES. She gets over it.

 

[minerigger]

I'd prolly buy one tomorrow but since I got 2 kids it makes upgrades a little harder to do...no worries they are a blessing. Not to mention my son always wants to work on my truck

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[mike diesel]

Yea i don't have kids so it's pretty easy to "justify" new parts ha. My girl wants a ring pretty damn bad tho. A ring!!?? Thats rod and piston money.

 

[minerigger]

Well sir that is uncharted waters for me. Id choose wisely for she may kill you

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