350 cast steel crank - Team Camaro Tech
Tech 2000 Our previous General Forum
Replies ONLY - no new topics.

 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old Mar 24th, 01, 12:08 PM Thread Starter
Tech Team
 
Join Date: Feb 2000
Location: canada
Posts: 58
Post

I have a guy that worked at a engine rebuilder shop telling me that there is 3 kind of 350 crank, cast, cast steel, forged steel, he is trying to sell me some over stock cast forged cranks after the shop had closed down.#3932442

------------------
69 camaro conv. SS 396 th400. matching numbers, hugger orange, white top, white houndstooth int.(changed color combo)
Burney is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old Mar 24th, 01, 03:04 PM
Tech Team
 
Join Date: Oct 2000
Location: Indianapolis, IN USA
Posts: 71
Post

Two kinds.
1) Cast.
2) Forged.
The #2442 is a cast crank.

Rick
ryork is offline  
post #3 of 7 (permalink) Old Mar 25th, 01, 04:33 AM
Senior Tech
Tim
 
Join Date: Mar 2001
Location: Florida
Posts: 182
Post

But you still see aftermarket advertisers list a "cast steel" crankshaft, like it is a middle grade crank between just cast and forged.

I would imagine is has to do with the material it is produced from...?

------------------
1969 Nova SS 350
406/M20/3.55
13.82 at 105
L48M20 is offline  
 
post #4 of 7 (permalink) Old Mar 25th, 01, 05:45 AM
Team Member
John
 
JohnZ's Avatar
 
Join Date: Sep 2000
Location: Washington, Michigan USA
Posts: 7,728
Post

"Cast Steel" is an upgrade material to cast iron and is stronger, but were never made by Chevrolet; OEM cranks were all either cast nodular iron or forged steel.

------------------
JohnZ
'69 Z28 Fathom Green
JohnZ is offline  
post #5 of 7 (permalink) Old Mar 25th, 01, 07:21 AM
Tech Team
 
Join Date: Mar 2001
Location: monroe,mi,usa
Posts: 61
Smile

easy way to tell cast from forged, tap a counterwieght with a wrench. cast will ring a short note, forged will ring like a bell.
bottledpower is offline  
post #6 of 7 (permalink) Old Mar 25th, 01, 10:27 AM
Senior Tech
Eric
 
Join Date: Dec 2000
Location: Kentwood, MI
Posts: 8,097
Post

Even easier way to tell cast from forged. On a cast crank there is a casting mark on the bottom of the flywheel flange. On a cast crank it is a narrow mark (like 1/16") on a forged crank it is wider (like a 1/4").

BTW - I personally think that forged cranks are overrated for all but serious race motors. A well balanced cast crank is reliable to at least 6000 RPM in a street application.
Eric68 is offline  
post #7 of 7 (permalink) Old Mar 26th, 01, 05:12 AM
Tech Team
 
Join Date: Mar 2001
Location: monroe,mi,usa
Posts: 61
Post

this is true, cast cranks and 2 bolt blocks are said to be safe up to 600 h.p., its the peace of mind though.
bottledpower is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
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.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.



Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not 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

 
For the best viewing experience please update your browser to Google Chrome