bbf 4340 sizes avaliable

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bbf 4340 sizes avaliable

Post  badnotch on July 11th 2013, 8:08 pm

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
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Re: bbf 4340 sizes avaliable

Post  maverick on July 11th 2013, 8:44 pm

Obviously, enough $$ will get you anything you want, but I think 4.15's should be pretty easy to find.
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Re: bbf 4340 sizes avaliable

Post  schmitty on July 11th 2013, 10:00 pm

An offset ground factory crank will take a lot of abuse.
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Re: bbf 4340 sizes avaliable

Post  badnotch on July 12th 2013, 6:25 am

Found one at ohio crankshaft

Aint no factory crankshaft gonna handle 2000+ hp but thanks guys
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Re: bbf 4340 sizes avaliable

Post  maverick on July 12th 2013, 8:44 am

If you're gonna make an honest 2000+hp, I guess the $$ question is off the table.
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Re: bbf 4340 sizes avaliable

Post  LivermoreDave on July 12th 2013, 9:18 am

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

Dave.

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Re: bbf 4340 sizes avaliable

Post  badnotch on July 12th 2013, 2:31 pm

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

Post  Mark Laczo on July 12th 2013, 2:35 pm

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
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Re: bbf 4340 sizes avaliable

Post  Mark Miller on July 13th 2013, 12:09 am

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

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Re: bbf 4340 sizes avaliable

Post  badnotch on July 13th 2013, 8:26 am

Mark unless you buy a billet from winberg or top shelf billet from bryant there all run of the mill china material
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Re: bbf 4340 sizes avaliable

Post  Paul Kane on July 13th 2013, 10:32 am

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. Smile 

Paul
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Re: bbf 4340 sizes avaliable

Post  schmitty on July 13th 2013, 1:46 pm

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.  Smile 

Paul
What were the findings on 1731hp Paul? I'm guessing that it held up just fine.
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Re: bbf 4340 sizes avaliable

Post  powerstrokeace on July 13th 2013, 10:31 pm

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
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Re: bbf 4340 sizes avaliable

Post  Mark Miller on July 13th 2013, 11:26 pm

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.

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Re: bbf 4340 sizes avaliable

Post  badnotch on July 14th 2013, 6:31 am

Its a scat 4340 steel done buy ADNEY BROWN
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Re: bbf 4340 sizes avaliable

Post  Mark Miller on July 14th 2013, 10:35 pm

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

Later Mark.

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Re: bbf 4340 sizes avaliable

Post  badnotch on July 15th 2013, 7:48 am

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
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Re: bbf 4340 sizes avaliable

Post  Paul Kane on July 15th 2013, 11:09 am

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.  Smile 

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. Cool 
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Re: bbf 4340 sizes avaliable

Post  dfree383 on July 15th 2013, 11:12 am

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.  Smile 

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. Cool 

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.
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Re: bbf 4340 sizes avaliable

Post  Paul Kane on July 15th 2013, 11:29 am

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. Cool
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Re: bbf 4340 sizes avaliable

Post  gordyd4 on July 15th 2013, 1:21 pm

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

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Re: bbf 4340 sizes avaliable

Post  Mark Miller on July 15th 2013, 10:12 pm

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

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Re: bbf 4340 sizes avaliable

Post  dfree383 on July 16th 2013, 12:05 am

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.
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Re: bbf 4340 sizes avaliable

Post  badnotch on July 16th 2013, 7:33 pm

Thanks guys
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Re: bbf 4340 sizes avaliable

Post  mico on July 18th 2013, 10:40 pm

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.

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