LS1TECH - Camaro and Firebird Forum Discussion

Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

What head bolts? 5.3...

Thread Tools
 
Search this Thread
 
Old 03-30-2014, 09:16 PM
  #1  
"I MAID THEESE"
Thread Starter
iTrader: (3)
 
Mavn's Avatar
 
Join Date: Jul 2011
Location: Houston
Posts: 2,744
Received 675 Likes on 425 Posts

Default What head bolts? 5.3...
And I have an unknown year 5.3 short block. I've tried every set of head bolts at oreilleys and none fit. I'm just trying to mock it up with my 241 heads and nothing fits! Any help is appreciated!
Mavn is offline  
Reply Like
Old 03-30-2014, 09:27 PM
  #2  
TECH Enthusiast
iTrader: (13)
 
autogeek23's Avatar
 
Join Date: Apr 2011
Location: Parma Heights,Ohio
Posts: 662
Received 9 Likes on 7 Posts

Default
Get your casting number. That will help figure out what year it is
autogeek23 is offline  
Reply Like
Old 03-30-2014, 09:33 PM
  #3  
"I MAID THEESE"
Thread Starter
iTrader: (3)
 
Mavn's Avatar
 
Join Date: Jul 2011
Location: Houston
Posts: 2,744
Received 675 Likes on 425 Posts

Default
Where would that be? ^ first time digging into a motor.
Mavn is offline  
Reply Like
Old 04-12-2014, 11:49 AM
  #4  
TECH Enthusiast
iTrader: (13)
 
autogeek23's Avatar
 
Join Date: Apr 2011
Location: Parma Heights,Ohio
Posts: 662
Received 9 Likes on 7 Posts

Default
Originally Posted by Mavn
Where would that be? ^ first time digging into a motor.
good question. i think its on the back of the motor
autogeek23 is offline  
Reply Like
Old 04-12-2014, 02:48 PM
  #5  
TECH Apprentice
iTrader: (16)
 
cmac06's Avatar
 
Join Date: Mar 2010
Location: Alabaster, AL
Posts: 308
Likes: 0
Received 1 Like on 1 Post

Default
The head bolts are hard to find; doubt you'd find them at most stores. They are all 11mmx2.0 the length varies, but the threads are the same. The ten closest to the valley are the only ones that are standard metric 8mmx1.25.
cmac06 is offline  
Reply Like
Old 04-12-2014, 06:02 PM
  #6  
TECH Senior Member
iTrader: (16)
 
1FastBrick's Avatar
 
Join Date: Apr 2007
Location: JunkYard
Posts: 9,276
Received 412 Likes on 293 Posts

Default
There is a 4 or 5 digit alpha numeric code on the front right of the block. It might also be in the lifter valley area

This will tell you what year the block was produced.
1FastBrick is offline  
Reply Like
Old 04-12-2014, 08:59 PM
  #7  
TECH Apprentice
iTrader: (16)
 
cmac06's Avatar
 
Join Date: Mar 2010
Location: Alabaster, AL
Posts: 308
Likes: 0
Received 1 Like on 1 Post

Default
Run a caliper down the outside 11mm bolt holes, and one of the center, if they are the same depth, it is later model short bolt block, otherwise it is an early Gen III with the unequal length 11mm bolts.
cmac06 is offline  
Reply Like
Back to Subforum
Generation III External Engine
View Next Unread
Ls1 seems no more powerfull then my lt1




Advanced Search
Quick Reply: What head bolts? 5.3...


Reply Closed Thread Share

All times are GMT -5. The time now is 06:20 AM.