turbo sbc

hello everybody,I have a question about putting a turbo on a sbc 350.I have a 83 rx7 with a rebuilt 350 with a 700r trans and saw a add on ebay for a twin turbo kit for this motor for only 800 dollars. The bottom end on the motor is pretty much stock except it was balanced, a freind told me that cast pistons and a cast crank would not hold up with a turbo.I am not looking for a lot of boost yet, just want to get my feet wet a little and not with oil and parts. Any feed back would be helpful ,I was thinking of maybe 7psi at first. think it will hold it?thanks

I don't think I would trust a turbo kit on eBay for that little money unless it was used. And if it was used, I would take a close look at the manifolds to make sure they are not cracked.

it is suppose to be brand new and it has stainless headers not manifolds ,look at ebay under sbc kits and you will see one of them thanks

That is too cheap. It is probably chinese crap. A cast crank will be fine though, I knew someone that was running 12s in the 1/4 mile in a 67 chevy pickup that had a stock cast bottom end and nothing broke.

its still the cost of having the kit built so if the turbos go,buy new turbos then

My boss bought a set of the Chinese twin turbo headers off eBay out of curiosity. The fitment information was a bad joke. Welds looked OK but getting them to fit the Nova they supposedly were meant to fit would mean cutting and rewelding them anyway. I've heard a lot of accounts of the eBay headers falling apart. The no name turbos seem to be a grab bag - the days when they were held together with epoxy seem to be over, but it seems for every good installation there's one that has the oil seals fail in a month.

hey msnglnk, been running a twin turboed sbc for the past 10 years. i run a chevy 2 bolt block with chevy cast crank, stock chevy sbc cam, forged pistons and good rods. 20 psi and never a failure on crank, rods or bearings

I'd bet with the right tuning an SBC would hold up fine to about 5 psi. Up the fuel getting into the motor, drop the timing a bit, you'd be ok for at least awhile.

Then it blows...and you go buy another SBC at the junkyard or out the paper for $200.

Small block chevys are as scarce as VD!

Anyone have any knowledge of this company: XS Power

They have a SBC twinturbo kit for $1k. Granted it needs stuff.

RossD wrote: Anyone have any knowledge of this company: XS Power They have a SBC twinturbo kit for $1k. Granted it needs stuff.

XS Power is chinese made crap.

Commonly confused with Turbo XS. I imagine it's not a mistake. Turbo XS is good stuff. XS Power is not.

Their intercoolers work fine and alot of the blow off valves/wastegates work fine for the most part also. As does using their IC piping kits to cut/weld into your own stuff.

That being said... I'd NEVER buy one of the "turbo kits" that those types of companies sell.

Never Ever.

Couldn't the same money be used to jusut build up the SBC without the turbo?

I have never built a SBC.

A way better use of the $1k

http://www.summitracing.com/parts/LUN-60103LK/

http://www.summitracing.com/parts/NAL-12558060 (or you can get a set for under $100 in the junkyard)

http://performanceparts.com/part.php?partID=10941

Those things added to a fresh 350 short block (along with the various other parts you need to finish it) will produce a much better result than a crap turbo kit.

Travis_K wrote: A way better use of the $1k http://www.summitracing.com/parts/LUN-60103LK/ http://www.summitracing.com/parts/NAL-12558060 (or you can get a set for under $100 in the junkyard) http://performanceparts.com/part.php?partID=10941 Those things added to a fresh 350 short block (along with the various other parts you need to finish it) will produce a much better result than a crap turbo kit.

just for grins, what kind of power gains can be expected from an intake mani, cam, and heads on a small block?

There can be so much difference in what they put out stock (mainly because of the heads), but i would imagine you would get 100+ hp over stock on a early 70s 350. With some better heads (like from Air flow Rearearch), and higher compression and a bigger cam you could probably double the stock hp. The parts I said would be for a realistic street engine (as in something that makes power in the rpm range you will be in 90% of the time, and does it on pump gas).