stroke a 4.8l motor?
stroke a 4.8l motor? I have an 01 Silverado with a tired 5.3l motor. I bought a 50k mile motor that was sold to me as a 2006 LM7 5.3l motor but in pulling off the oil pan I discovered it has a 482 crank which means it is a 4.8l motor. It is very, very clean and I was wondering if I could throw in a LS1/LM7 crank to make it a 5.3l with higher compression? Would it cause any valvetrain clearance problems if I use the 4.8l flattop pistons with the stock 06 706/852 heads?
Thanks
Thanks
does this mean the 06 4.8 has the different reluctor wheel? I see that the 6.2l does but cannot find any info on the 4.8
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TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
The 2006 motor is a regular Gen III motor 24x etc etc...
Yes, you have to remove the pistons and change the rods as well. You can reuse the pistons though. But I would balance everything.
You could sell it. And rebuild your 5.3L. Bore it to LS1 size and you have an iron block 5.7L. But I doubt you get any money out of the 4.8L as no one wants it.
So ou could bore the 4.8L and add the LS/5.3 crank and rods. As well as find a set of 243/799 and mill them alittle to make it higher CR. That would make nice power.
Yes, you have to remove the pistons and change the rods as well. You can reuse the pistons though. But I would balance everything.
You could sell it. And rebuild your 5.3L. Bore it to LS1 size and you have an iron block 5.7L. But I doubt you get any money out of the 4.8L as no one wants it.
So ou could bore the 4.8L and add the LS/5.3 crank and rods. As well as find a set of 243/799 and mill them alittle to make it higher CR. That would make nice power.
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TECH Fanatic
Joined: Jul 2005
Posts: 1,685
Likes: 7
From: Beebe, Arkansas
Correct. He said his was a 2006 motor. All the Gen III 4.8L and most the 5.3L had the 862 or 706 etc...
All the 2007-up Gen IV 4.8/5.3L motors come with the 243/799 heads. I have even seen a 2009 truck that even had a 799 on one side and a 243 on the other from GM.
All the 2007-up Gen IV 4.8/5.3L motors come with the 243/799 heads. I have even seen a 2009 truck that even had a 799 on one side and a 243 on the other from GM.
