Notices
GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |
Sponsored by:
Sponsored by:

Boring an iron block 6.0

Thread Tools
 
Search this Thread
 
Old 07-01-2010, 05:54 AM
  #1  
12 Second Truck Club
Thread Starter
iTrader: (5)
 
white1's Avatar
 
Join Date: Apr 2005
Location: Sittin on jackstands
Posts: 5,230
Likes: 0
Received 4 Likes on 2 Posts
Default Boring an iron block 6.0

Just wondering how much I can go. My long term plans for the rcsb involve a stroker engine. I'd really like a 427, but can't find any info on how much I can bore the 6l block. Is .060 unreasonable?
Old 07-01-2010, 07:26 AM
  #2  
I have a gauge for that
iTrader: (42)
 
Atomic's Avatar
 
Join Date: Jan 2006
Location: Huntsville, AL
Posts: 16,252
Received 374 Likes on 255 Posts
Default

0.030 if you plan on boost or lots of nitrous, 0.060 for NA.

I personally wouldnt go more than that, but if you are feeling ballsy you can go 0.100
Old 07-01-2010, 12:18 PM
  #3  
TECH Addict
iTrader: (18)
 
Zick's Avatar
 
Join Date: Jun 2004
Location: WI
Posts: 2,247
Likes: 0
Received 0 Likes on 0 Posts
Default

Taken from http://carcraft.automotive.com/73243...ine/index.html

As a guideline, the guys at SLP say the Gen III block is only able to grow to 4.060 without a sleeve, so in this case, they'll leave you with at least two rebuilds by leaving the bore alone.
Other sites say
No matter which 6.0L block you use, don't plan on boring out it out more than .010?, because the cylinders are on 4.40? centers so the walls are pretty thin and the cylinders are so close together that head gasket sealing will become an issue, too.
Old 07-01-2010, 12:23 PM
  #4  
Wearin' da big hat
iTrader: (10)
 
00ChevyScott's Avatar
 
Join Date: Jan 2008
Location: Over There
Posts: 10,261
Received 9 Likes on 4 Posts
Default

Many people have gone .030 safely. I don't know if I'd wanna go .060 over though, might have cooling issues. All depends on the block though, some will be fine at .060 while others might not take .030 safely.
Old 07-01-2010, 12:29 PM
  #5  
11 Second Truck Club
iTrader: (5)
 
MPFD's Avatar
 
Join Date: Sep 2005
Location: Kansas
Posts: 1,339
Likes: 0
Received 0 Likes on 0 Posts
Default

I've heard of guys going .060" but you definitely wanna sonic test it first...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Go5.3tt06
Dynamometer Results & Comparisons
25
09-04-2016 10:25 AM
mikeyjm1
GM Engine & Exhaust Performance
17
10-29-2015 11:04 PM
kalikid06
Tuning, Diagnostics, Electronics, and Wiring
20
10-13-2015 07:37 AM
chvy=power
GM Parts Classifieds
3
09-08-2015 11:06 AM
the owl
Trucks and SUV Classifieds
0
09-04-2015 04:09 PM



Quick Reply: Boring an iron block 6.0



All times are GMT -5. The time now is 11:29 AM.