Eagle rotating assm good or bad - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum

Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Hotrodding Basics
User Name
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 04-20-2012, 08:19 PM
Registered User
Join Date: Aug 2011
Location: Kissimmee fl
Posts: 26
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Eagle rotating assm good or bad

Hey everybody just bought a eagle rotating assm from summit. I guess I jumped the gun and didn't do my home work. Found out it's made in china and machined here? I'm just wondering if anybody has used them before and how they holdup? It's for a 355 sbc the assm is cast crank with fordged I beam rods and fordged pistons file fit rings. The motor will prob base at 420hp and I have a small 75-100hp shot of nos. Any info would be great thanks.

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 04-20-2012, 09:01 PM
68NovaSS's Avatar
Last wiki edit: Working with chromed bolts
Last journal entry: New to me T-Bucket
Last photo:
Join Date: Sep 2002
Location: Nine Mile Falls/Suncrest, WA
Posts: 5,811
Wiki Edits: 9

Thanks: 231
Thanked 231 Times in 212 Posts
Did you do a search here? There are a ton of posts about rotating assemblies.
When I die I want to go peacefully - in my sleep, not yelling and screaming like passengers in my car...

Midnight Sun Street Rod Association

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-21-2012, 06:02 AM
BOBCRMAN@aol.com's Avatar
Last photo:
Join Date: May 2002
Location: Holly, michigan
Posts: 8,839
Wiki Edits: 0

Thanks: 70
Thanked 461 Times in 419 Posts
Most all of the affordable ( no matter what brand) cranks cast or forged are made in China and machined here. A fact of life.. Eagle had a bout with poor quality control a few years ago. About the only brand name I avoid is "Cat". I have seen/had some really bad stuff from them. I believe they are now out of business. I used to buy/regrind a lot of factory second Scat cranks so all have had a problem once in a while.

I have used several of Eagle's cast "steel" 383 cranks and have had no problems. Just have a machinist measure the journals for taper/round. These cranks are plenty strong.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-21-2012, 07:07 AM
Registered User
Join Date: Nov 2011
Location: Virginia
Posts: 876
Wiki Edits: 0

Thanks: 2
Thanked 132 Times in 116 Posts
Of the "imports", Eagle is the "premium" brand. The "fit and finish" is always a little "nicer" than others.

We've had issues with the cast steel small block cranks not staying "stable" at higher HP and revs (over 400 HP, 6,500-up). The forgings are MUCH better. Our '68 Camaro went 8.90s with a "300 shot" @ 150 using an Eagle 412 "kit" (3.8" stroke, 400 mains).

We use Eagle cranks almost exclusively for the Pontiacs. No comparison. Unlike the smaller Chevy cranks, the Pontiac is fine with a casting up to at least 800 HP.

We've seen balancing problems with Scat products, and it doesn't seem to be with just one or two engine "families", but a lot of their "strokers".

Eagle's H-beam rods are also a little "nicer" than the other imports. There's an additional feature not found in ANY of the others. The "third rib" down the center of the beam makes the rod stronger than the "rest". Two small radii are stronger than one large one.


Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-24-2012, 08:27 PM
Registered User
Last photo:
Join Date: Oct 2010
Location: il
Posts: 38
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I had a problem with an eagle crank. No two journals were the same size. Off by a ton. The guy at eagle said "I'd run it, but I'll send you a new one anyway.". Funny, the second one was dead on, only it ate up thrust bearings. Repolished it, been okay so far. No more eagle formme after this one. I'll stick with GM steel.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-25-2012, 07:03 PM
Registered User
Last photo:
Join Date: Mar 2008
Location: Arkansas
Age: 53
Posts: 298
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What ever I buy gets checked before anything else is done.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics posts with photos
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
eagle rotating 454 kits from summit smashem Engine 15 03-31-2010 08:20 AM
383 Eagle Rotating kit trkridr900 Engine 17 01-23-2010 07:12 PM
Eagle "ESP" Rotating Assy.. Smittydpd Engine 2 06-26-2009 05:11 AM
Eagle rotating assembly..... Smittydpd Engine 9 04-13-2009 01:25 PM
another useless post about myself. the bad got good the good went bad bullheimer Hotrodders' Lounge 6 09-29-2004 06:57 AM

All times are GMT -6. The time now is 12:17 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.