crankshaft front snout lenght

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crankshaft front snout lenght

Post  sskwb on May 13th 2012, 7:46 am

in a race application when and why do you need to cut the snout length down to shorter boss length? is there a big change in strength on a good quality internally balanced forged or billet crank?

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Re: crankshaft front snout lenght

Post  dfree383 on May 13th 2012, 7:58 am

I've used both IMO not a big deal.

But if your buying a new quality crank Like a Bryant or Crower they typical come with the short snout.

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Re: crankshaft front snout lenght

Post  stanggt on May 13th 2012, 8:39 am

dfree383 wrote:I've used both IMO not a big deal.


But if your buying a new quality crank Like a Bryant or Crower they typical come with the short snout.
since this was brought up, my Crower crank has a long snout.What is the purpose for that?

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Re: crankshaft front snout lenght

Post  dfree383 on May 13th 2012, 8:46 am

stanggt wrote:
dfree383 wrote:I've used both IMO not a big deal.


But if your buying a new quality crank Like a Bryant or Crower they typical come with the short snout.
since this was brought up, my Crower crank has a long snout.What is the purpose for that?

Thats the way it way ordered?

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Re: crankshaft front snout lenght

Post  stanggt on May 13th 2012, 8:49 am

dfree383 wrote:
stanggt wrote:
dfree383 wrote:I've used both IMO not a big deal.


But if your buying a new quality crank Like a Bryant or Crower they typical come with the short snout.
since this was brought up, my Crower crank has a long snout.What is the purpose for that?

Thats the way it way ordered?
I realize that but for what, whats typically the purpose?

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Re: crankshaft front snout lenght

Post  dfree383 on May 13th 2012, 8:52 am

Some guys like stuff to fit like a factory crank, use more stock type pulleys / accessories, ect.


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Re: crankshaft front snout lenght

Post  stanggt on May 13th 2012, 8:57 am

oh,ok thanks for info

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Re: crankshaft front snout lenght

Post  sskwb on May 13th 2012, 9:49 am

that's why i asked the question i acquired 4.50 Crower billet with a long snout, what is the typical cost to cut down a crank snout?

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Re: crankshaft front snout lenght

Post  dfree383 on May 13th 2012, 9:52 am

Call Adney at Performance Crank, he's done a bunch of them.

http://performancecrankshaft.com/

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Re: crankshaft front snout lenght

Post  rmcomprandy on May 13th 2012, 11:04 am

dfree383 wrote:Call Adney at Performance Crank, he's done a bunch of them.

http://performancecrankshaft.com/

A lot of big block Ford cranks these days have the snout cut to small block Ford length of 3" so, dampner selection is much more vast.

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Re: crankshaft front snout lenght

Post  sskwb on May 13th 2012, 1:38 pm

forgive the question,doesn't the snout diameter impact balancer choices more than length

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Re: crankshaft front snout lenght

Post  Barney on May 13th 2012, 2:04 pm

rmcomprandy wrote:
dfree383 wrote:Call Adney at Performance Crank, he's done a bunch of them.

http://performancecrankshaft.com/

A lot of big block Ford cranks these days have the snout cut to small block Ford length of 3" so, dampner selection is much more vast.
The shorter snout reduces torsional load also, that's the biggest reason, as well as packaging for a Mandrel. Damper selection has very little to do with it, especially since aftermarket Dampers can be ordered with either hub, at least ATI super dampers can which is what we always run.

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Re: crankshaft front snout lenght

Post  Lem Evans on May 13th 2012, 4:17 pm

sskwb wrote: forgive the question,doesn't the snout diameter impact balancer choices more than length

The sbf and bbf snouts are the same dia.

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Re: crankshaft front snout lenght

Post  rmcomprandy on May 13th 2012, 9:26 pm

An OEM dampner for a BOSS 429 engine, (which is where the BOSS length snout designation came from), uses no spacer as the original dampner has an integral spacer as part of it which extends into the front seal area all the way to the timing gear just like small block dampners; except a Boss dampner, (and crank snout), is a bit longer than a small block dampner.

BOTH type dampners can be used with a 3" crank snout.

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Re: crankshaft front snout lenght

Post  Lem Evans on May 14th 2012, 6:40 pm

The Bryant "Boss" snouts are ~ 3.5".

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