Go Back  Offshoreonly.com > Technical > General Q & A
Does anyone make a 15 to 25 thou head gasket or a 400sbc >

Does anyone make a 15 to 25 thou head gasket or a 400sbc

Notices

Does anyone make a 15 to 25 thou head gasket or a 400sbc

Thread Tools
 
Old 12-22-2012, 01:58 PM
  #1  
Registered
Thread Starter
 
Join Date: Jul 2001
Location: oshawa ontario
Posts: 4,830
Received 94 Likes on 22 Posts
Default Does anyone make a 15 to 25 thou head gasket or a 400sbc

Having trouble finding one. If we can find one we wont have to disassemble the whole engine and deck the block.
pullmytrigger is offline  
Old 12-22-2012, 02:14 PM
  #2  
Registered
Platinum Member
 
Join Date: Mar 2008
Location: Vancouver BC
Posts: 1,181
Likes: 0
Received 0 Likes on 0 Posts
Default

What's your bore size, head material, closed cooling or raw water? There are some options available
HaxbySpeed is offline  
Old 12-22-2012, 02:20 PM
  #3  
Registered
 
Join Date: Aug 2010
Location: Brooklyn Park, MN
Posts: 659
Likes: 0
Received 3 Likes on 3 Posts
Default

cometic goes down to .027 why can't you deck the heads?
professor_speed is offline  
Old 12-22-2012, 03:11 PM
  #4  
Registered
Thread Starter
 
Join Date: Jul 2001
Location: oshawa ontario
Posts: 4,830
Received 94 Likes on 22 Posts
Default

Bore size is 30 over, alum heads closed cooling, its a car engine. As per engine builder its to get the quench where he wants it. A combo of a stock deck height and aftermarket pistons means the pistons dont come all the way up to the top.
pullmytrigger is offline  
Old 12-28-2012, 03:41 PM
  #5  
Platinum Member
Platinum Member
 
mcollinstn's Avatar
 
Join Date: Sep 2001
Location: tn
Posts: 5,753
Received 138 Likes on 83 Posts
Default

Why didn't the "engine builder" zero deck the block? Standard decks are notoriously out of square and generally taller than spec. Finding ultra thin head gaskets is a bandaid that usually isn't the best solution for a marine engine.
mcollinstn is offline  
Old 12-29-2012, 12:38 AM
  #6  
Registered
Thread Starter
 
Join Date: Jul 2001
Location: oshawa ontario
Posts: 4,830
Received 94 Likes on 22 Posts
Default

As stated above its a car engine, I bought it off a guy fully assembled a long time ago to put in a truck which I ended up selling and now its just sitting around my shop. Had the engine builder look it over. he said its ok but it would be nice to get the deck height where it needs to be without completely dissembling (and reassembling ) the whole engine just to deck the block.

Im using it for a "starter" engine for my race car so I want to keep the cost down. We got our eye on a pump gas combo that makes 420 hp/525ft lbs, run that for a couple of yrs before stepping up to something faster like a Nascar Busch motor or something in the 6 to 700 range. Heres a pic of it from a couple yrs back it has 80s Vette alum heads (not great but would have been fine for a truck) which we'll probably change maybe to Vortecs or something alum to save 40lbs.
Attached Thumbnails Does anyone make a 15 to 25 thou head gasket or a 400sbc-new-cakes-030-small-.jpg  

Last edited by pullmytrigger; 12-29-2012 at 08:25 AM.
pullmytrigger is offline  
Old 12-29-2012, 12:42 PM
  #7  
Registered
iTrader: (3)
 
Join Date: Oct 2007
Location: yorkville,il
Posts: 8,427
Received 87 Likes on 49 Posts
Default

why not run it as is for a season,get some seat time,then take it apart and deck the block for next season?
mike tkach is offline  
Old 12-29-2012, 04:08 PM
  #8  
Registered
Thread Starter
 
Join Date: Jul 2001
Location: oshawa ontario
Posts: 4,830
Received 94 Likes on 22 Posts
Default

Originally Posted by mike tkach
why not run it as is for a season,get some seat time,then take it apart and deck the block for next season?
Thats exactly what I may end up doing but the engine builder said it could leave 30 or 40hp on the table if the quench isnt right. There are several thin gaskets avail for the 350 but nothing for the 400 that we can find so far. be nice to solve it.
pullmytrigger is offline  

Posting Rules
You may not post new threads
You may not 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



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.