??? 5.3 ironblock help please???
04-05-2011, 11:54 PM
#1
Teching In
Thread Starter
Join Date: Jul 2010
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
??? 5.3 ironblock help please??? Hi guys hopefully some one can tell me the 5.3 litre (3.75' bore) out of the pick ups is it the same engine as the 6.0 litre (4.00" bore) other than the bore size and how far is it possible to bore one out? any help greatly appreciated..
04-06-2011, 10:15 PM
#9
TECH Resident
iTrader: (3)
Join Date: Jun 2010
Location: Calgary
Posts: 934
Likes: 0
Received 0 Likes
on
0 Posts
I just bored mine out to 3.907. There was a minimum wall thickness of .110 and went as thick a .175 I believe. Still thicker than a 350 small block bored .060 over, and that's with taking an eighth of an inch out of there.
04-10-2011, 02:40 AM
#10
TECH Fanatic
iTrader: (8)
Join Date: Nov 2009
Location: phx the cactus patch
Posts: 1,097
Likes: 0
Received 13 Likes
on
13 Posts
What I've read on here is although the 5.3 , 5.7 and the 6.0 share the same stroke all 3 use a different crank because of the different weights of the piston, pin, rod assemblies . Boring a 5.3 iron block usually can easily take 3.905 or more . To be sure have the block sonic checked for peace of mind .
