Great N/A - Now want boost
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On The Tree
Joined: Dec 2011
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From: Colorado Springs, CO
You could get an aluminum 5.3 block and reuse everything you have now, with the exception of your pistons. You would need new pistons and to have you rotating assembly balanced again. Your heads and cam and, well, everything, would work just fine.
You would want to use the 5.3's smaller bore to maintain the thicker cylinder sleeves. If you bore out the 5.3 sleeves to 3.9", then you are right back where you started with thin *** sleeves. Keeping it small bore gives you more "meat" around the cylinder for strength.
Or, just retune your spring and bar package to use an iron block. The weight can be compensated for when tuning the suspension.
You would want to use the 5.3's smaller bore to maintain the thicker cylinder sleeves. If you bore out the 5.3 sleeves to 3.9", then you are right back where you started with thin *** sleeves. Keeping it small bore gives you more "meat" around the cylinder for strength.
Or, just retune your spring and bar package to use an iron block. The weight can be compensated for when tuning the suspension.
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 118
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From: Colorado Springs, CO
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 118
Likes: 0
From: Colorado Springs, CO
TECH Addict
Joined: Jul 2013
Posts: 2,189
Likes: 123
From: Portland, Oregon
The 4.00" crank will be perfect for a LQx block. It gives you ~402ci. Very strong and proven combination. Your heads and cam will work, but the cam may need to be revisited later. Someone like Martin Smallwood would be a good person to contact about that.
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On The Tree
Joined: Dec 2011
Posts: 118
Likes: 0
From: Colorado Springs, CO
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 118
Likes: 0
From: Colorado Springs, CO
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 118
Likes: 0
From: Colorado Springs, CO
TECH Addict
Joined: Jul 2013
Posts: 2,189
Likes: 123
From: Portland, Oregon
People push 600+rwhp all day on stock pistons, I would imagine any forged slug would still have to be better... assuming they are consistent and correct in tolerance. For the price, you could buy them and have all eight of them cryo-treated for less than anything else I have seen. And everything else out there seems to require at least a minor overbore. Granted, I have not really searched outside of what Summit and Jegs offers, I am sure you could find a Wiseco piston for a 4.00" bore and 4.00" stroke directly from Wiseco, I just didn't check the manufacturers' websites, only the retailers.
Thread Starter
On The Tree
Joined: Dec 2011
Posts: 118
Likes: 0
From: Colorado Springs, CO
People push 600+rwhp all day on stock pistons, I would imagine any forged slug would still have to be better... assuming they are consistent and correct in tolerance. For the price, you could buy them and have all eight of them cryo-treated for less than anything else I have seen. And everything else out there seems to require at least a minor overbore. Granted, I have not really searched outside of what Summit and Jegs offers, I am sure you could find a Wiseco piston for a 4.00" bore and 4.00" stroke directly from Wiseco, I just didn't check the manufacturers' websites, only the retailers.
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Joined: Jul 2013
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From: Portland, Oregon
Cryogenic freezing is a metal treatment that chills metal parts to something silly like -300* and it causes the metal to shrink and then expand as it warms up to room temperature. It relieves the internal stress in the metal caused by the machining processes. It is considered a good way to improve the durability of metal parts.