bbf 4340 sizes avaliable

Looking to sell my 4.50 crank and do a single turbo and im looking for a 4.00-4.14 crank to drop my cubes for a single turbo does anyone make one? Thanks

Obviously, enough $$ will get you anything you want, but I think 4.15's should be pretty easy to find.

An offset ground factory crank will take a lot of abuse.

Found one at ohio crankshaft

Aint no factory crankshaft gonna handle 2000+ hp but thanks guys

If you're gonna make an honest 2000+hp, I guess the $$ question is off the table.

If I may ask, what piston manufacture and the deck dimension of the block in your application?

Dave.

Piston manufacturer will be diamond block.is svo 10.2 deck c heads

That Ohio crank is run of the mill forged shaft, I would be cautious with 2000hp.

You may need to look into a Crower/Bryant/SVO etc

JMO Mark

Mark Laczo wrote:That Ohio crank is run of the mill forged shaft, I would be cautious with 2000hp.

You may need to look into a Crower/Bryant/SVO  etc

JMO Mark  

How good are the Scat 4340 Cranks Competition Products shows a 4.15 Stroke Crank for the 429-460?

Later Mark

Mark unless you buy a billet from winberg or top shelf billet from bryant there all run of the mill china material

badnotch wrote:
Aint no factory crankshaft gonna handle 2000+ hp but thanks guys

2000 hp with a factory 385 Sereis cast crankshaft certainly hasn't been formally documented and competed with, but 1731 hp has.  

Paul

Paul Kane wrote:

badnotch wrote:
Aint no factory crankshaft gonna handle 2000+ hp but thanks guys

2000 hp with a factory 385 Sereis cast crankshaft certainly hasn't been formally documented and competed with, but 1731 hp has.   

Paul

What were the findings on 1731hp Paul? I'm guessing that it held up just fine.

A Bryant 4340 no twist forged steel crank will handle that and them some. I sold one to a friend(Mike Murillo) to run on his twin turbo 450 CID motor with no problems



Ace

badnotch wrote:Mark unless you buy a billet from winberg or top shelf billet from bryant there all run of the mill china material

Gerry,just curious what brand crank is the 4.5 stroke you have now?

Later Mark.

Its a scat 4340 steel done buy ADNEY BROWN

How much more power do you think with the Turbo then what you made with Nitrous?

Later Mark.

Its not about that its about making power more efficiently at lower boost and rpm and a turbo isnt as hard on parts as nitrous is at my lebel i can build 1800 easy with 15-18#,s of boost i would have to spray 600-800 worth of nos and it be a time bomb

schmitty wrote:

Paul Kane wrote:

badnotch wrote:
Aint no factory crankshaft gonna handle 2000+ hp but thanks guys

2000 hp with a factory 385 Sereis cast crankshaft certainly hasn't been formally documented and competed with, but 1731 hp has.   

Paul

What were the findings on 1731hp Paul?  I'm guessing that it held up just fine.

It was not built here but it is my understanding that the crankshaft held up just fine during competition...until the engine melted down due to injection system problems (not crankshaft's fault). It was a twin turbo build.

Paul

P.s.: I am not advocating this type of OEM crankshaft use in such high horsepower enignes for the masses, I am only offering a noteworthy sidebar to the discussion in this thread.  

Paul Kane wrote:

schmitty wrote:

Paul Kane wrote:

badnotch wrote:
Aint no factory crankshaft gonna handle 2000+ hp but thanks guys

2000 hp with a factory 385 Sereis cast crankshaft certainly hasn't been formally documented and competed with, but 1731 hp has.   

Paul

What were the findings on 1731hp Paul?  I'm guessing that it held up just fine.

It was not built here but it is my understanding that the crankshaft held up just fine during competition...until the engine melted down due to injection system problems (not crankshaft's fault). It was a twin turbo build.

Paul

P.s.: I am not advocating this type of OEM crankshaft use in such high horsepower enignes for the masses, I am only offering a noteworthy sidebar to the discussion in this thread.  

Untill I hear of more than one..... I'd have to say avoid a cast crank at that level for any kind of durability. We have affordable Forged cranks avaliable and thier is no reason not to use one.

Oh, they're out there. I have another customer driving a blower with a cast 460 crankshaft and claiming 1800 hp (and the et's support it). But as I said earlier, "I am not advocating this type of OEM crankshaft use in such high horsepower enignes for the masses..." Yes, we are well past those days and have quality forgings readily available.

Check Bryant as they have a lot of inventory right now.

badnotch wrote:Its not about that its about making power more efficiently at lower boost and rpm and a turbo isnt as hard on parts as nitrous is at my lebel i can build 1800 easy with 15-18#,s of boost i would have to spray 600-800 worth of nos and it be a time bomb

Sounds like the 4340 4.14 or 4.15 Stroke Forged Crank should work fine.

Later Mark

gordyd4 wrote:Check Bryant as they have a lot of inventory right now.

Bryant only has billets for BBF's now, they ran out of the SVO forgings.

Thanks guys

I've been looking for a 4.25 crank for a turbo deal. Decided on a winberg with a boss snout. Main reason they are local and I'm using GRP rods which is owned by the same people.