Will Performer RPM heads be OK on my SBC? - 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 06-20-2008, 04:38 AM
v8hed's Avatar
AK427
 
Last photo:
Join Date: May 2008
Location: Northampton, UK
Age: 39
Posts: 792
Wiki Edits: 0

Thanks: 1
Thanked 3 Times in 3 Posts
Will Performer RPM heads be OK on my SBC?

SpeedPro H618CP (domed, 3.5cc) pistons, 0.025" deck clearance. Will Performer RPM heads be OK (ie. sufficient piston-to-valve clearance)? Would be installing with Felpro 1094 shim gaskets for 10.7:1 CR and 0.040" quench. Cam is Performer RPM.

Thanks,
Ian.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 06-20-2008, 05:55 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,182
Wiki Edits: 0

Thanks: 2
Thanked 292 Times in 289 Posts
Althou it has been done short term for racing purposes, using the 1094 steel shim head gasket is not generally recomended with aluminum heads.
For a street motor use the composite head gasket with the preflattened fire ring for aluminum heads. Follow Edelbrocks instructions for proper installation.
You can read those instructions on the Summit racing site. PDF

If you have domed piston get the 70cc chamber version for pump gas compression
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 06-20-2008, 05:58 AM
GaryNova's Avatar
Registered User
 
Join Date: Jun 2008
Location: Keystone Heights Fl.
Age: 59
Posts: 2
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Will Performer RPM heads be OK

With a deck of 0.025 and a 1094 head gasket with 0.040 that's 0.065 so I say it is looking real good.The cam will have a lot to do with it but as I see it you can use about any cam with that.I have run a 383 small block with track 1 heads cut 0.100 and a 0 deck and a 12.5:1 200 dome with a 1094 and not hit with a 0.630 lift roller cam with 1.6 rockers.With a Dur. of 260 to 270 at 0.050 most pistons are cut to handle over 600 lift cams but the Dur. will have a lot to do with how long the valves are open at just before top dead center and just after top dead center.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 06-20-2008, 06:26 AM
v8hed's Avatar
AK427
 
Last photo:
Join Date: May 2008
Location: Northampton, UK
Age: 39
Posts: 792
Wiki Edits: 0

Thanks: 1
Thanked 3 Times in 3 Posts
Thanks guys. The original (pro) engine builder also advised me to definitely not use the shim gasket with ally heads.

Cheers,
Ian.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 06-20-2008, 08:33 AM
F-BIRD'88's Avatar
Yada Yada Yada
 
Last photo:
Join Date: Oct 2005
Location: Ontario, Canada
Posts: 9,182
Wiki Edits: 0

Thanks: 2
Thanked 292 Times in 289 Posts
If you insist on using a shim gasket with aluminum heads, you must remove the heads and inspect on a regular basis, (such as done on a competition race motor) as the different metals in contact (aluminum steel and cast iron will cause galvanic chemical action (rust) over time. (doesn;t take that long) Definate head bolt retorque will be required after carefull initial engine run in. Anti freeze coolant with a strong anti corrosion additive is required.
No guarantees.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 06-20-2008, 10:49 PM
Member
 
Last photo:
Join Date: May 2003
Location: Shreveport LA
Age: 64
Posts: 5,103
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
GM makes a .028" composition gasket that they say is OK with aluminum heads. PN is 10105117

http://www.sdparts.com/product/10105...eadGasket.aspx
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 06-21-2008, 09:39 AM
Stroke Meister
 
Last photo:
Join Date: Mar 2007
Location: MI, USA
Posts: 704
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Just order a set from Cometic. Custom I think you can get down to .022" IMO a high quality head gasket is worth the investment.









I am not a compensated endorser/agent of any known product.
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
SBC Heads -= AFR - Trickflow - Dart - Brodix =- Delirious2000 Engine 25 04-22-2009 12:58 PM
need info on Edelbrock rpm performer and.. ryork Engine 4 09-22-2007 04:23 AM
head ache. sbc heads excaliberprime Engine 8 03-07-2007 06:03 PM
'76 400 SBC cracked heads 87Camaro Engine 5 04-19-2004 11:01 AM
bowtie heads for sbc Eddie Baker Engine 3 11-08-2003 11:02 PM


All times are GMT -6. The time now is 03:03 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.