408 Iron Block Build up
08-23-2005 | 12:04 PM
#11
On The Tree
Joined: May 2005
Posts: 178
Likes: 0
From: Pearland, TX
[QUOTE=gonzo 6.0]
With thin cylinder wall thicknesses like is used in the 4.8/5.3/6.0 (as well as the aluminum LS series blocks) a significant weight reduction can be made while increasing heat transfer to the coolant.
The 5.3 can be bored out .120 to accomidate 5.7 pistons.I wouldnt consider that to be thin walled.
.120 over? hmmmm, first I have heard of that on a Gen III block. Not saying you are wrong, but just saying that is the first time I have heard that. I have heard .030 over, but .120.....hmmmmmmmmm
Originally Posted by Steve Bryant
With thin cylinder wall thicknesses like is used in the 4.8/5.3/6.0 (as well as the aluminum LS series blocks) a significant weight reduction can be made while increasing heat transfer to the coolant.
The 5.3 can be bored out .120 to accomidate 5.7 pistons.I wouldnt consider that to be thin walled.
.120 over? hmmmm, first I have heard of that on a Gen III block. Not saying you are wrong, but just saying that is the first time I have heard that. I have heard .030 over, but .120.....hmmmmmmmmm
08-23-2005 | 07:56 PM
#14
Originally Posted by zippy
i can tell you that i've been driving a 408 truck every day for the last few weeks. you're going to be happy with it.
Let see a new sig pic with a fresh burnout.
08-23-2005 | 09:04 PM
#15
Have you seen that book.."How to build High Performance LS1/LS6 V-8s. Which i just checked and found nothing. All I found is the stock cylinder bores but not any kind of maximum you can safely bore it over without a SNAFU. I may have overlooked it but i could find it. 
They used a C5R block in one build up and it is SWEET!!! 1200hp is almost enough for me. 
They used a C5R block in one build up and it is SWEET!!! 1200hp is almost enough for me.
08-23-2005 | 09:17 PM
#16
TECH Veteran
Joined: Sep 2003
Posts: 4,534
Likes: 3
From: Las Vegas, NV
Originally Posted by gonzo 6.0
Let see a new sig pic with a fresh burnout.
i'll see what i can do. this truck is an SS so it's awd. once the nitrous is hooked up i'm sure it'll be possible. i'll try to get up a new burnout pic of something anyway.
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