Steam holes in heads but not in block - Team Camaro Tech
Engine General Engine Discussion.

 
LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old Jan 6th, 05, 07:05 PM Thread Starter
Senior Tech
 
Join Date: Jun 2003
Location: Tampa, FL
Posts: 957
Post

My Canfield heads came delivered with steam holes already drilled. My big bore Bow-Tie Sportsman block does not have steam holes and I was not planning to drill them. Do I need to plug the steam holes in the heads or will the gasket without steam holes seal them up?

Also, when looking in the block's water jacket, I can see where the water jacket ends between the siamesed cylinders. If I did drill the steam holes, they would be behind the water jacket. What would I be drilling into? Is it solid casting? If so, what is the point with the steam holes?

Thanks. -Neil
Neil B is offline  
Sponsored Links
Advertisement
 
post #2 of 3 (permalink) Old Jan 6th, 05, 07:29 PM
Senior Tech
Sean
 
Join Date: Feb 2002
Location: N.W. Washington
Posts: 7,963
Post

unless you plan on idling around town daily for hours on end, don't worry about the steam holes. they were there for cars that spent thier life idling, (i've actually heard under 1500rpm continuous) and never had a good steady flow of coolant moving around the block, esp. at the siamesed area. thus creating hot spots and steam pockets.
none of my half dozen or so buddys or myself with 406's have ever drilled them, most of our cars are street strip cruisers, but we have all driven them extensively on the street as well. mine runs 180 all day, any weather, with a 3 core copper brass radiator.
as for your steam hole issue, just run them and the gasket will take car of the rest. mines the same way, only holes in the block. they will seal fine.
of course, as always just my opinion from my experiences.

good luck with it [img]graemlins/beers.gif[/img]

Sean

1968 rs with an old school 354" SB2.2 pump gas motor.

Repetition does not transform a lie into a truth.

Franklin D. Roosevelt
68rs406 is offline  
post #3 of 3 (permalink) Old Jan 7th, 05, 10:15 AM
Moderator
____
 
DOUG G's Avatar
 
Join Date: Mar 1999
Location: Maryland, USA
Posts: 19,405
Garage
Send a message via MSN to DOUG G
Post

Just ordered new Protoplines (200's w/ 72cc)and shop said no holes needed.So I'm gonna try them without the hole and see what happens.Most say 50/50 shot.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
DOUG G 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 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