Scat 9000 383 crank
Melting Slicks
Joined: Feb 2006
Posts: 2,209
Likes: 0
From: Mo
that's just a cast stock replacement.if you buy anything from scat have a good engine builder go over it well.I have had problems with them before.it's been year or so since I have used there stuff and there quality control was having problems,I would go forged crank.
I would recommend a eagle forged crank,with h-beam rods.
I would recommend a eagle forged crank,with h-beam rods.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Originally Posted by Guru_4_hire
does he have 5.7" or 6" rods? Does a block need clearenced for 6" rods?
the block regardless of rod length, the better machine shops have
a fixture that they use to grind the blocks for 3.75 stroke cranks.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
THe vid in my sig shows a Scat 9000 crank spinning at 6500 RPM. It's got almost 20,000 miles on it now. Another forum member Vetdrms drags his 406ci and shifts at 7000RPM and he has a Scat 9000. I don't know how many passes he has made but I would imagine quite a few over the years.
THey are good, strong cranks made of nodular iron that are much better than stock and will withstand short high RPM bursts. I would not put one in a racing engine at high sustained RPM but the short 6500 RPM blips are OK, like you would do at a drag strip. Like mentioned above, go over it with a fine tooth comb as they can be out of tolerance a little from the factory
THey are good, strong cranks made of nodular iron that are much better than stock and will withstand short high RPM bursts. I would not put one in a racing engine at high sustained RPM but the short 6500 RPM blips are OK, like you would do at a drag strip. Like mentioned above, go over it with a fine tooth comb as they can be out of tolerance a little from the factory
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Drifting
Joined: Nov 2004
Posts: 1,631
Likes: 293
2020 C3 of the Year Finalist - Modified
I have a 383 9000 scat crank sitting in my living room right now.....it'll be going in in the next prob 2 weeks or so.....depending on money....if not then within the next month......I've heard good things about them......my ideal rpm range will be 6500.....again with short bursts playing around on the street or at track!......
I ordered it from northernautoparts and the guy there told me I may want to get a machine shop to double check the specs on it!....he said the exact same thing of past issues with quality control......
ryan
I ordered it from northernautoparts and the guy there told me I may want to get a machine shop to double check the specs on it!....he said the exact same thing of past issues with quality control......
ryan
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Originally Posted by Guru_4_hire
how long will they live on a 6500 rpm motor?
I ran a 3.48" scat 9000 in a 355 asphalt circle track car for 3 seasons ... hi rpm ... lotsa hard on-off throttle ... motor eventually failed ... one of the $600/set Ross pistons came apart .. not the $150 crank. Wasn't really the piston's fault either ... wore out motor had lotsa bore clearance and lotsa piston skirt slap ... but SOB was darned quick! From what you seem to expect, scat 9000 will be aok ... but have it checked closely for index, journal sizing & taper. If possible get the internal balance 383 piece that requires 6" rods/short-skirt pistons.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Originally Posted by Guru_4_hire
I wont be drag racing, I want to road race, so I will probably be in sustained middle to high RPMs.
