gm forged steel crank - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-25-2007, 09:32 PM
Registered User
 
Join Date: Aug 2006
Location: FORNEY TX
Age: 59
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
gm forged steel crank

can someone tell me what is the max rpms for a 69-70 350 chevy forged steel crank..10/10

    Advertisement

Last edited by STUD MOUSE 82; 03-25-2007 at 09:37 PM. Reason: building blower motor
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-26-2007, 07:17 AM
bigbadbowtie's Avatar
Bottle Fed
 
Last photo:
Join Date: Jul 2005
Location: Huntsville Alabama
Age: 40
Posts: 468
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
That 10/10 GM 1053 steel crank will take 7k rpm and 650 HP for a LONG time when well balanced and matched with good parts.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-26-2007, 07:34 AM
CNC BLOCKS NE's Avatar
CNC Blocks Northeast
 
Last photo:
Join Date: Sep 2006
Location: NORTHEAST
Age: 54
Posts: 1,433
Wiki Edits: 0

Thanks: 1
Thanked 17 Times in 17 Posts
Quote:
Originally Posted by bigbadbowtie
That 10/10 GM 1053 steel crank will take 7k rpm and 650 HP for a LONG time when well balanced and matched with good parts.
We buy a lot of GM cranks machined by http://kingscrankshaft.com/ and he buys the rough forgings and index them and uses an 1/8 radius on the jornals and rates them at only 500 horse and the stock crank with a small radius you rate at more power HMMMM

We have two 1182 cranks in the shop that are cracked in the radius and they were not even close to 650 horse.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-26-2007, 08:29 AM
King of my Man-cave.
 
Last photo:
Join Date: Nov 2003
Location: Michigan
Age: 55
Posts: 2,896
Wiki Edits: 0

Thanks: 3
Thanked 12 Times in 10 Posts
Another thing to look at is the crank snout. I have seen a lot of these with little or no radius where it meets the front main journal. Not something to be used with heavy accessory belt loads or forced induction. Plus these cranks are prone to cracking when over-stressed. Just like CNC said.

tom
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-26-2007, 11:15 AM
bigbadbowtie's Avatar
Bottle Fed
 
Last photo:
Join Date: Jul 2005
Location: Huntsville Alabama
Age: 40
Posts: 468
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
maybe I have a time bomb on my hands....
Im not using forced induction but it gets its share of gas.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-26-2007, 12:34 PM
King of my Man-cave.
 
Last photo:
Join Date: Nov 2003
Location: Michigan
Age: 55
Posts: 2,896
Wiki Edits: 0

Thanks: 3
Thanked 12 Times in 10 Posts
Quote:
Originally Posted by bigbadbowtie
maybe I have a time bomb on my hands....
Im not using forced induction but it gets its share of gas.
A blower is forced induction.

tom
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-26-2007, 01:04 PM
johnsongrass1's Avatar
Race it, Don't rice it!
 
Last photo:
Join Date: Jul 2002
Location: Columbia, Mo
Age: 37
Posts: 4,080
Wiki Edits: 0

Thanks: 0
Thanked 10 Times in 10 Posts
I wanna know how you get 650hp at 7K on a 3.48 crank.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 03-26-2007, 01:21 PM
bigbadbowtie's Avatar
Bottle Fed
 
Last photo:
Join Date: Jul 2005
Location: Huntsville Alabama
Age: 40
Posts: 468
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I never had the car on a dyno but the car weighs 3440 and trapped 128 in the qtr. Hp calculator....says 630 to 645 at the crank.

Thats from a roller 355 with 175 jets.

Ill be quiet from now on.....

Johnson... I should have stated.... should live at the 650 Hp mark and be able to spin 7k.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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
350 Crank & Rods Question Mustangsaly Engine 12 11-02-2006 07:20 PM
GM 400 cast crank question flyin99 Engine 3 10-25-2006 12:23 PM
whats the big deal with cast steel? 406 ss monte Engine 19 02-13-2005 09:31 AM
forged crank? fezz-man Engine 9 01-26-2005 10:59 PM
Forged crank, pistons, and supercharging CustomFord Engine 3 09-01-2003 01:48 PM


All times are GMT -6. The time now is 08:12 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.