Rotating assemblies
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Instructor
Joined: Dec 2017
Posts: 239
Likes: 17
Rotating assemblies
I changed machine shops for my big block project and I told them I was planning on putting the 496 eagle rotating assembly in my block and they recommended using scat. I wanted to get your guy’s take on the two and what your experiences have been. Thanks guys you are always a huge help in my decision process so thanks!
Last edited by Muzzyzx7rr; Dec 18, 2017 at 10:23 PM.
Drifting
Joined: Jun 2010
Posts: 1,781
Likes: 15
From: Oxford Ohio
Kind of depends on your budget. There are better sources than both of those, but the best stuff doesn't come without a price tag. Just going to be a driver, either will probably get the job done for you. The shop which turns cranks for me often turns the eagle cranks 0.010/0.010 out of the box. Have had some that had the rod journals not parallel with the center line of the mains.
Thread Starter
Instructor
Joined: Dec 2017
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What are some better brands to use? I guess my problem is I’m trying to localize all my stuff to summit racing for convenience as I can add it to my wish list and adjust or rearrange as needed or when I change my mind.....which is at least once a day at this point lol
Last edited by Muzzyzx7rr; Dec 18, 2017 at 11:27 PM.
Drifting
Joined: Jul 2015
Posts: 1,765
Likes: 254
From: Catlett VA
What are some better brands to use? I guess my problem is I’m trying to localize all my stuff to summit racing for convenience as I can add it to my wish list and adjust or rearrange as needed or when I change my mind.....which is at least once a day at this point lol
What do you plan to use the motor for? As Indiancreek mentioned, there is a price tag associated with high end parts that are intended for racing use and extreme conditions for extended periods of time. Keep in mind that OEM parts properly installed last 100K miles in cars that are daily drivers with occasional full throttle use.
Thread Starter
Instructor
Joined: Dec 2017
Posts: 239
Likes: 17
What do you plan to use the motor for? As Indiancreek mentioned, there is a price tag associated with high end parts that are intended for racing use and extreme conditions for extended periods of time. Keep in mind that OEM parts properly installed last 100K miles in cars that are daily drivers with occasional full throttle use.
It will honestly be street with occasional strip time but probably rarely
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Drifting
Joined: Jun 2010
Posts: 1,781
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From: Oxford Ohio
In that case an OEM forged crank would be as good or better than buying the import. Like ronarnt said, many OEM raced many passes in the early days. Spend the extra money for a good balancing job. The bottom end if your durability. Good crank rods and pistons and your engine should last a long time. It's difficult to swallow the cost of a good set of rods (like a set of Olivers) but that is money well spent. Probably over kill for your intended use.
Race Director
Joined: Jul 2015
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From: SW Florida.
Guys put alum heads, cam, 900 holler on cast flat top 3/8 rod bolt bottom ends. Put them in boats and run them at 3/4 throttle constantly. In a car, 7 seconds at full throttle and you are a danger to yourself and others. In a boat, 30 seconds at full throttle and you are starting to come up to speed. 70 mph takes 500 hp in a fast hull. Only thing boats don't see is 7000 rpm. But to make a valve train produce power above 6k in a big block takes a bunch of money.
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From: Corsicana, Tx
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Scat or callies
jim
jim
Last edited by 427Hotrod; Dec 19, 2017 at 10:36 AM.
Race Director
Joined: Jan 2000
Posts: 13,018
Likes: 2,262
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Callie's is definitely good stuff. The "regular" Callie's cranks are the same forging on BBC. The price difference is the amount of machining and lightening that occurs. The raw forgings came from Japan last I heard. I've got one in my motor and it's held up well.
The Compstar line is the Chinese import versions to compete with SCAT, Eagle etc. Still good quality.
The machine work by Callie's is some of the best out there out of the box. They also do crank machining for Howards I believe.
I've got Oliver rods in my engine and they are incredible. I've heard through the grapevine there may be new owners and things might have changed recently but don't know for sure.
I've been to SCAT's machine center in CA and was given a tour by the owner. They do LOTS of the OEM high performance parts used in the best crate motors and higher end race parts. I ran SCAT rods in mine for years.....still have them. Nothing wrong with them...bearings always looked perfect...just changed to the Oliver's with ARP 625 bolts considering how I run the thing.
JIM
The Compstar line is the Chinese import versions to compete with SCAT, Eagle etc. Still good quality.
The machine work by Callie's is some of the best out there out of the box. They also do crank machining for Howards I believe.
I've got Oliver rods in my engine and they are incredible. I've heard through the grapevine there may be new owners and things might have changed recently but don't know for sure.
I've been to SCAT's machine center in CA and was given a tour by the owner. They do LOTS of the OEM high performance parts used in the best crate motors and higher end race parts. I ran SCAT rods in mine for years.....still have them. Nothing wrong with them...bearings always looked perfect...just changed to the Oliver's with ARP 625 bolts considering how I run the thing.
JIM
Last edited by 427Hotrod; Dec 19, 2017 at 10:39 PM.
Thread Starter
Instructor
Joined: Dec 2017
Posts: 239
Likes: 17
Callie's is definitely good stuff. The "regular" Callie's cranks are the same forging on BBC. The price difference is the amount of machining and lightening that occurs. They raw forgings came from Japan last I heard.
The Compstar line is the Chinese import versions to compete with SCAT, Eagle etc. Still good quality.
The machine work by Callie's is some of the best out there out of the box. They also do crank machining for Howards I believe.
I've got Oliver rods in my engine and they are incredible. I've heard through the grapevine there may be new owners and things might have changed recently but don't know for sure.
I've been to SCAT's machine center in CA and was given a tour by the owner. They do LOTS of the OEM high performance parts used in the best crate motors and higher end race parts.
JIM
The Compstar line is the Chinese import versions to compete with SCAT, Eagle etc. Still good quality.
The machine work by Callie's is some of the best out there out of the box. They also do crank machining for Howards I believe.
I've got Oliver rods in my engine and they are incredible. I've heard through the grapevine there may be new owners and things might have changed recently but don't know for sure.
I've been to SCAT's machine center in CA and was given a tour by the owner. They do LOTS of the OEM high performance parts used in the best crate motors and higher end race parts.
JIM
Thanks for the good insight him!
