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Old 06-02-2016, 11:43 AM   #1
cortinav8
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Default which crank

which is the better crank small block ford turbo single 98 mm
gone thro Scat 4340 steal thrust face but hopefully got to the bottom now just need to replace the crank for steel unit can go scat or eagle
both 4340 just looking for advice please
thanks
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Old 06-02-2016, 11:51 AM   #2
slyfox
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Default Re: which crank

I wouldn't use either of those with that combo. At least get an American forging.
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Old 06-02-2016, 12:01 PM   #3
tthomp
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Default Re: which crank

What slyfox said...... For that power level I would look into a Callies, Lunati, crower, etc.
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Old 06-02-2016, 12:35 PM   #4
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Default Re: which crank

Quote:
Originally Posted by cortinav8 View Post
which is the better crank small block ford turbo single 98 mm
gone thro Scat 4340 steal thrust face but hopefully got to the bottom now just need to replace the crank for steel unit can go scat or eagle
both 4340 just looking for advice please
thanks
Conv ballooned?
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...is that serious?
...yup."


“And if all others accepted the lie which the Party imposed—if all records told the same tale—then the lie passed into history and became truth." -George Orwell


I really don't know which is worse ..... all of DOTARD's lies all the time, or all the trumphumpers lapping them up with not even giving them a critical thought
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Old 06-02-2016, 12:50 PM   #5
cortinav8
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Default Re: which crank

we were running too much cooler line pressure on the powerglide and its ran thro two cranks hopefully sorted now test at weekend on stock crank low boost 8 psi to check
ran the thrust at 15psi
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Old 06-02-2016, 01:15 PM   #6
c0ncEpT
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Default Re: which crank

Bryant
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Old 06-02-2016, 01:19 PM   #7
shredder
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Default Re: which crank

Lunati pro series
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Old 06-02-2016, 03:16 PM   #8
TurboII
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Default Re: which crank

Callies Magnum or Crower are a lot of crank for the money.
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Old 06-02-2016, 07:56 PM   #9
rudder9
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Default Re: which crank

I didn't want to go Scat or Eagle and didn't really have the money or need for a high dollar crank, so I went with a Manley. My engine guy really likes them for the money and said the machine work is a lot better than the price suggests. He said it will take what I'm going to throw at it no problem.
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Old 06-03-2016, 05:49 PM   #10
Taff
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Default Re: which crank

I run a Scat 4340 forging in my Pontiac turbo combo,no probs at around 960hp, my mate runs a Scat 4340 forging in his 540BBC turbo combo,no probs at around 1200 hp. Both in the UK. Eagle cranks have been known to have problems with the thrust surfaces and their clearances can be off a bit.
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Old 06-03-2016, 07:08 PM   #11
Horndog
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Default Re: which crank

Most crank forgings these days are imports unless stated, Made in USA. The difference between them is in the quality of the machine work. Import forgings finished machined in the US are usually without taper across the journal and the journals are round.
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" ...oh no, what the fuck was that?
...the motor ... we've thrown a rod.
...is that serious?
...yup."


“And if all others accepted the lie which the Party imposed—if all records told the same tale—then the lie passed into history and became truth." -George Orwell


I really don't know which is worse ..... all of DOTARD's lies all the time, or all the trumphumpers lapping them up with not even giving them a critical thought

Last edited by Horndog; 06-03-2016 at 07:09 PM.
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Old 06-03-2016, 07:11 PM   #12
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Default Re: which crank

Quote:
Originally Posted by cortinav8 View Post
we were running too much cooler line pressure on the powerglide and its ran thro two cranks hopefully sorted now test at weekend on stock crank low boost 8 psi to check
ran the thrust at 15psi
So the convertor snout didn't bottom out in the crank? This is what usually kills the thrust.
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Jim Horner

" ...oh no, what the fuck was that?
...the motor ... we've thrown a rod.
...is that serious?
...yup."


“And if all others accepted the lie which the Party imposed—if all records told the same tale—then the lie passed into history and became truth." -George Orwell


I really don't know which is worse ..... all of DOTARD's lies all the time, or all the trumphumpers lapping them up with not even giving them a critical thought
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