it's worth a few free HP
383 crank- SCAT 9000 or Eagle?
Thread Starter
Racer
Joined: May 2004
Posts: 391
Likes: 0
From: Chicago il
383 crank- SCAT 9000 or Eagle?
OK,
I have my 4 bolt main 010 casting 350 block. It will be sent to the machine shop in a week or two. Hopefully it will be fine for a .30 over-bore and test out ok for cracks...
My next item up for purchase is the crank. A couple of questions for you guru types out there:
Better cast crank? Scat or Eagle? I am leaning toward the SCAT 9000 383 crank. The counterweights are knife edged for windage and the Eagle isn't. The price is pretty close (scat a touch higher). I am thinking externally balanced crank and 6" rods. I know the debate on 6" rods, but as I will be buying all new internals the 6" rods from eagle and scat are the same price as 5.7".
Anyone have opinions on these two cranks?
I have seen a ton of Eagle clones on E-bay, but for the $50 price difference I will stick with a name!
Cheers!
~Kevin
I have my 4 bolt main 010 casting 350 block. It will be sent to the machine shop in a week or two. Hopefully it will be fine for a .30 over-bore and test out ok for cracks...
My next item up for purchase is the crank. A couple of questions for you guru types out there:
Better cast crank? Scat or Eagle? I am leaning toward the SCAT 9000 383 crank. The counterweights are knife edged for windage and the Eagle isn't. The price is pretty close (scat a touch higher). I am thinking externally balanced crank and 6" rods. I know the debate on 6" rods, but as I will be buying all new internals the 6" rods from eagle and scat are the same price as 5.7".
Anyone have opinions on these two cranks?
I have seen a ton of Eagle clones on E-bay, but for the $50 price difference I will stick with a name!
Cheers!
~Kevin
Melting Slicks
Joined: Dec 2001
Posts: 2,025
Likes: 1
From: Billings MT
I have the internally balanced SCAT crank in my 406 with their 6" h-beam rods.
I shift at 7000-7300rpm, no problems after a full year of abuse (less winter) and 40+ passes at the strip.
Oh, I would recommend the SCAT.
I shift at 7000-7300rpm, no problems after a full year of abuse (less winter) and 40+ passes at the strip.
Oh, I would recommend the SCAT.
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
I have the Scat 9000 in my 406ci and it's putting out a few ponies and staying together so far.
Measure the crank carefully mine was a little under spec and had to go with -1 main bearings to get the oil clearance I wanted.
Measure the crank carefully mine was a little under spec and had to go with -1 main bearings to get the oil clearance I wanted.
Thread Starter
Racer
Joined: May 2004
Posts: 391
Likes: 0
From: Chicago il
Cool.
The SCAT 9000 cast crank they claim is good for 500HP and 6000 RPM. I am looking for 450+ and a red line of 5500. I will be going with the SCAT crank.
$189 can't go wrong!
Should I stick with SCAT rods too? I am looking at Speed Pro Hyper. flat top pistons (10:1 CR w/ 64cc heads). This is for a daily driver. Need some oomph, but nothing too crazy. Pump gas friendly is a must.
Any thoughts?
Thanks again to all you guys who know this stuff. This will be my first engine build. I do have an expert mechanic to help me out- my dad. He has been rebuilding engines for 40+ years, but never really done any high performance stuff. He rebuilds cars to showroom stock. Mostly Corvairs (although he has done a ton of Chevy 350's in his trucks for snowplowing).
Thanks again!
~Kevin
The SCAT 9000 cast crank they claim is good for 500HP and 6000 RPM. I am looking for 450+ and a red line of 5500. I will be going with the SCAT crank.
$189 can't go wrong!
Should I stick with SCAT rods too? I am looking at Speed Pro Hyper. flat top pistons (10:1 CR w/ 64cc heads). This is for a daily driver. Need some oomph, but nothing too crazy. Pump gas friendly is a must.
Any thoughts?
Thanks again to all you guys who know this stuff. This will be my first engine build. I do have an expert mechanic to help me out- my dad. He has been rebuilding engines for 40+ years, but never really done any high performance stuff. He rebuilds cars to showroom stock. Mostly Corvairs (although he has done a ton of Chevy 350's in his trucks for snowplowing).
Thanks again!
~Kevin
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Scat 9000 crank can handle some power make sure you accurately measure the journals I have seen them a little under from the factory no big deal -1 bearings
Thread Starter
Racer
Joined: May 2004
Posts: 391
Likes: 0
From: Chicago il
Motorhead,
Thanks for that heads up. I was certainly planning on measuring everything at least twice! However that given that info I will wait to order my bearings until I have the crank/rods/pistons in hand.
I have been looking at prices, and unless I go the E-bay route, JEGS has a pretty good deal on a balanced rotating assebly with Scat crank & rods with speed-pro pistons. The rings they give you are crap, but the price is great.
Cheers!
~Kevin
Thanks for that heads up. I was certainly planning on measuring everything at least twice! However that given that info I will wait to order my bearings until I have the crank/rods/pistons in hand.
I have been looking at prices, and unless I go the E-bay route, JEGS has a pretty good deal on a balanced rotating assebly with Scat crank & rods with speed-pro pistons. The rings they give you are crap, but the price is great.
Cheers!
~Kevin
Racer
Joined: Apr 2003
Posts: 286
Likes: 2
From: Suffolk VA
If you are going for the hole rotating assembly package check out www.cnc-motorsports.com another forum member turned me on to it and they have some really great prices and deal in Eagle and SCAT.
I think either Rod will suite you fine the only thing I would look out for is those ARP wave lock rod bolts... I had some in a SBC once and they flew apart faster than the straw house the first little pig built I did some research after that experince and found that it is not all that uncommon for those bolts to fail catistrophically (ARP is supposedly correcting this) Not trying to bash ARP ..their conventional rod bolts are great jsut had a bad experience with those wave lock ones.
I think either Rod will suite you fine the only thing I would look out for is those ARP wave lock rod bolts... I had some in a SBC once and they flew apart faster than the straw house the first little pig built
I did some research after that experince and found that it is not all that uncommon for those bolts to fail catistrophically (ARP is supposedly correcting this) Not trying to bash ARP ..their conventional rod bolts are great jsut had a bad experience with those wave lock ones.
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Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by Evil_1979
Should I stick with SCAT rods too? I am looking at Speed Pro Hyper. flat top pistons (10:1 CR w/ 64cc heads). This is for a daily driver. Need some oomph, but nothing too crazy. Pump gas friendly is a must.
Any thoughts?
Any thoughts?
RACE ON!!!
Thread Starter
Racer
Joined: May 2004
Posts: 391
Likes: 0
From: Chicago il
Originally Posted by CFI-EFI
Based in your other components and stated usage, there would be nothing wrong with a good set of reconditioned stock rods. Even your old rods, redone.
RACE ON!!!
RACE ON!!!
:-)
