i have a question this maybe insane but i have a 675 cid bbc 8.8 to 1, billet crank, oliver rods and je pistons , bb4 brodix heads setup for pump gas want to change over to race gas and put a BIG TURBO on this engine im taking it off the street and putting it in a drag only car what turbo if any could be used on this cid motor looking for big hp dont really want to push it hard maybe 20 psi max and what kind of hp numbers could be expected

 

that is a Big motor! how much power you want to make?

 

i really dont know its going in a big tire tubed chassis s-10 with 4 link that certs to 7.50 so i got a chassis i would like to see 2000 but dont really know it makes 700 now on pump gas

 

Steve Morris Racing Engines Built 509 with twin turbos
2100hp

www.youtube.com/watch?v=jn7iTcjUmTo

 

If you want a single you're gonna pay BIG for a turbo that can feed that thing. If you want twins then that opens you up into the affordable S400 series, and a couple of S480s would probably be pretty bitchin on that motor. You are gonna have 337.5ci per turbo, and that should be plenty to spool up one of those in a drag car.

 

There is no 'single' turbo for this set up. Twin 94 or bigger with 1.32 - 1.5 a/rs? = shit load of power.

 

Compressor side isn't the problem since something like a 115mm Turbonetics can feed it, but you're right, I don't think there is any standard turbo that can handle 675ci on the exhaust side. If there is, like I said, it's going to be upwards or $4k+ just for the turbo. A man could have worse problems than having an engine too big to be able to run a single turbo on.

 

what kind of boost is the 509 of steve morris's engine making

 

The video I saw of it was 2100hp at 27psi.

 

I think Steve Morris is running an all aluminum 540 with F-3 .

 

i was thinking the bullseye comp-r83's a pair of them would work nicely on this motor if i was wanting to get wild and crazy and had the right cam and carb and put 30 psi on a motor this size anyone care to guess what kind of numbers it would pull on a dyno

 

If it makes 700hp on pump gas, with 30psi you are looking at ~2100hp with the right fuel and tune, if you size your turbos right. Something that over the top needs a turbo builder on board to make the choice instead of just picking a couple off their website and ordering.

 

Check out the Turbonetics TNX-122, capable of 3000+ hp.

 

that would get the job done but they are like $8000. 00

 

Sure, but whats the a/r?

 

The TNX can feed it on the compressor side, but I still wonder if it could handle 675ci on the turbine side.

 

Hes referring to the engine that Steve Morris built for Gordon of Extreme Velocity. 509 with twin 88s, 2101hp on a 4150 carb.

 

This one, right?

 

Yea the one on the video

 

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