Iron block maximum bore
Thread Starter
Teching In
Joined: Jan 2002
Posts: 36
Likes: 0
From: Fort Lauderdale FL
Iron block maximum bore How much overbore can the iron block stand up to??
I am thinking it could go 4.100 with no problem
since it is really only .050 off each side of the bore. And the block looks pretty thick to handle it.
Maybe more????
I am thinking it could go 4.100 with no problem
since it is really only .050 off each side of the bore. And the block looks pretty thick to handle it.
Maybe more????
Re: Iron block maximum bore My block is not resleeved. The 5.3L has a lot of extra meat on it. Stock bore size is 3.780 for the 5.3L block. Mine is at 3.910. That comes out to .130 over by my math <img src="gr_grin.gif" border="0">
Todd
Todd
Teching In
Joined: Jun 2002
Posts: 8
Likes: 0
From: Georgia
Re: Iron block maximum bore It is possible to bore a stock cast in liner completely out and put in a conventional stepped pressed-in liner to obtian SAFELY 4.080. Basicly known as sleeving. Or your floating on block material.
Trending Topics
Moderator
Joined: Nov 2001
Posts: 3,048
Likes: 12
From: Raleigh, NC
Re: Iron block maximum bore Golden West Performance was going to give me a 427 by boring 4.060 and 4.125 stroke. But, Kenny got uncomfortable with the 4.060 bore (he felt durability/reliability would suffer) and recommended I stick with 4.030.
So 422 it is.
So 422 it is.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
Likes: 0
From: Deep in the seedy underworld of Koonerville
Re: Iron block maximum bore Evidently, the 4.8 and 5.3L blocks use different liners than the 6.0L block.
Certain 6.0L blocks can be bored over .06 after the cylinder wall thickness is checked.
I think I've heard of an iron block going out to 4.08 but, I don't remember where I heard this.
Certain 6.0L blocks can be bored over .06 after the cylinder wall thickness is checked.
I think I've heard of an iron block going out to 4.08 but, I don't remember where I heard this.
Re: Iron block maximum bore My 6.0 block is bored .060 over.
.030 over is no sweat, ditto for .040. But .060 will make you look at the coreshift a lot more.
I have heard of two 4.080 bore 6.0's but have no detail on them might be just rumors.
.030 over is no sweat, ditto for .040. But .060 will make you look at the coreshift a lot more.
I have heard of two 4.080 bore 6.0's but have no detail on them might be just rumors.
