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-   -   Sbc Turbo Build Questions? (http://www.hotrodders.com/forum/sbc-turbo-build-questions-228876.html)

bottlefed55gasser 01-27-2013 12:35 PM

Sbc Turbo Build Questions?
 
So this morning I woke up and thought a turbo'd 55 Chevy gasser would be cooler then a supercharged one, plus id make more power! And cost about the same. The problem is I don't know where to start, I'm not familiar with turbos! What parts will I all need I know for sure I need a blow through carb or at least convert one to. If I can find a good kit for 2-3 thousand awesome, if I can build something that works that is cheaper even better! The engine is a 9:2:1 flat top 355 010 4 bolt main block, stock short block, small cam its actually perfect for boost 114 lsa, vortec heads, and that's about it. I want something that will work on the stock short block but has room to grow once I build something with forged internals. Any info helps, any junk yard builds with great success I would like to hear too, budget in mind, but don't mind saving and spending 3 grand if it's worth it.

bottlefed55gasser 01-27-2013 12:54 PM

Also looking for 400-450 rwhp maybe 500 on a stock short block.

ap72 01-27-2013 01:28 PM

you can fab up a decent single turbo system for your budget or less, intercool it if you can, you'll probably only need about 5-10psi and with a really good tune can get away with pump premium (93 octane).

building your own blowthrough carb requires a lot of attention to detail- its not something you want to mess up, and make sure you keep a very close eye on a/f ratios and detonation when you're doing the tuning.

bottlefed55gasser 01-27-2013 01:43 PM

My goal is to keep the car as streetable as possible. 93 and possibly race gas on the weekends

prumora1 01-27-2013 02:57 PM

reply
 
I have a friend who builds turbo kits for a living. try him at his site he'll give ya the info.

WWW.B&GCustomTurbos.com.

techinspector1 01-27-2013 03:18 PM

Quote:

Originally Posted by bottlefed55gasser (Post 1639265)
So this morning I woke up and thought a turbo'd 55 Chevy gasser would be cooler then a supercharged one, plus id make more power! And cost about the same. The problem is I don't know where to start, I'm not familiar with turbos! What parts will I all need I know for sure I need a blow through carb or at least convert one to. If I can find a good kit for 2-3 thousand awesome, if I can build something that works that is cheaper even better! The engine is a 9:2:1 flat top 355 010 4 bolt main block, stock short block, small cam its actually perfect for boost 114 lsa, vortec heads, and that's about it. I want something that will work on the stock short block but has room to grow once I build something with forged internals. Any info helps, any junk yard builds with great success I would like to hear too, budget in mind, but don't mind saving and spending 3 grand if it's worth it.

A 350 with flat-top pistons and 64cc heads will be closer to 10.2:1 static compression ratio, not 9.2:1. You have some changes to make before you start puffin' boost into THAT motor.

bottlefed55gasser 01-27-2013 03:52 PM

Factory flat tops? The ones with the 4 eye brows.

F-BIRD'88 01-27-2013 04:07 PM

There are many advantages to mounting the turbo(s) at the back of the car.
STS Turbo, Inc. - Turbocharged Innovation!

including a cooler charge air temperature without intercooling which allows more boost with mid 9.xx compression on pump gas.

bottlefed55gasser 01-27-2013 05:13 PM

Sts would be awesome, but I have no clue where to start.

vinniekq2 01-27-2013 05:19 PM

single or twin turbo? a couple GT-40s on headers can take you a long ways. 700 hp should be no problem.keep your mixture mid 12s for safety. I think 3,000 is optimistic.

techinspector1 01-27-2013 05:23 PM

Quote:

Originally Posted by bottlefed55gasser (Post 1639424)
Sts would be awesome, but I have no clue where to start.

I might start by reading everything they have written about their product line......
http://ststurbo.com/

bygddy 01-27-2013 06:34 PM

Excellent read, great insperation....I have read all zillion pages a few times now for a laugh...
http://www.theturboforums.com/thread...ht=the+grenade

bottlefed55gasser 01-27-2013 07:42 PM

Quote:

Originally Posted by vinniekq2 (Post 1639428)
single or twin turbo? a couple GT-40s on headers can take you a long ways. 700 hp should be no problem.keep your mixture mid 12s for safety. I think 3,000 is optimistic.

I like the idea of a single, twin seems like too much crap in the engine compartment lol

bottlefed55gasser 01-27-2013 07:44 PM

Quote:

Originally Posted by techinspector1 (Post 1639433)
I might start by reading everything they have written about their product line......
STS Turbo, Inc. - Turbocharged Innovation!

Pretty cool, I'm kind of interested in this set up.

vinniekq2 01-27-2013 07:53 PM

I said twin turbo because that makes it very fast to spool up with reverse facing headers putting 2 little turbos out front. A single turbo is more than enough for decent boost.


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