When is the aluminum block
On The Tree
Joined: Jan 2004
Posts: 107
Likes: 0
From: layton ut
No one really knows for sure i make 1000 hp a the crank and im still on the stock mains and bolts with the aluminium block, and have been over 800 for two years and never had any problem at all but other people have so i dont think youll get a straight answer. If you were going to build one though you might as well go iron block, weight differance is minimal and they have been proven way past 900hp.
I took a 5.3 block to HPE to have built, they had never done a 5.3 bored out to a 5.7 before, but they took some measurement and said taht the wall thickness would be greater than that on a bowtie block, or some of the highpo block.
they also said that no one they know of has borken the block from power, just like most say about the stock crank.
its always a certain gamble, it pays off for alot, but put the wrong tune on it and your guarenteed a boom
ed
they also said that no one they know of has borken the block from power, just like most say about the stock crank.
its always a certain gamble, it pays off for alot, but put the wrong tune on it and your guarenteed a boom
ed
I'm asking for a friend. He has 785 rwhp now, but was thinking about going turbo and getting 900-950 rwhp. A certain sponsor told him 800-900 is as high as they would wanna go with the stock block??
TECH Enthusiast
Joined: Mar 2004
Posts: 604
Likes: 0
From: Loganville, GA
Originally Posted by 69firebird
I took a 5.3 block to HPE to have built, they had never done a 5.3 bored out to a 5.7 before, but they took some measurement and said taht the wall thickness would be greater than that on a bowtie block, or some of the highpo block.
they also said that no one they know of has borken the block from power, just like most say about the stock crank.
its always a certain gamble, it pays off for alot, but put the wrong tune on it and your guarenteed a boom
ed
they also said that no one they know of has borken the block from power, just like most say about the stock crank.
its always a certain gamble, it pays off for alot, but put the wrong tune on it and your guarenteed a boom
ed
) I wouldn't have ever thought a bored 5.3->5.7 would have thicker walls than a 5.7... 
Since it has thicker walls, is that a valid reason to choose a bored out 5.3 over a 5.7?
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