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needs directions on my engine build

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Old 10-26-2013, 08:59 PM
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Originally Posted by Noah Burns
heads on the 4.8 will swap on to a 6.0...
they will, compression will be a bit high for what I would recommend for FI
Old 10-26-2013, 09:09 PM
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what does it come out to with 5.3 heads on a 6.0? It's been so long since I did that math I can't remember. I ran some sweet p&p 6.0 heads on my 4.8 rcsp with a 224/228 it was a bad ****, would have been killer on boost...
Old 10-26-2013, 09:16 PM
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close to 12:1 I believe

6.0 heads would be great heads on 5.3/4.8 for serious boost
Old 10-26-2013, 11:11 PM
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Originally Posted by Chevy_King1500
Why not?

Everything on the 4.8 will swap over to the 6.0 besides heads only $500 for used 243's

4.8 and 5.3 don't make a lot of torque
I know all the accessories will be direct swap, but swapping a 6.0 and turbo will cost me more than just a turbo on my current engine. Above that, cam swap and the supporting parts along with it. Thanks for the help
Old 10-26-2013, 11:13 PM
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Originally Posted by Noah Burns
what does it come out to with 5.3 heads on a 6.0? It's been so long since I did that math I can't remember. I ran some sweet p&p 6.0 heads on my 4.8 rcsp with a 224/228 it was a bad ****, would have been killer on boost...
What was the hp and tq numbers with your setup?
Old 10-26-2013, 11:20 PM
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If I had to swap in a 6.0 what should I go with? Junk yard 6.0 or 0 miles rebuild short block or long block?
Thompson motor sport is making 370 lq9 and lq4 short, and long blocks with a verity of internals setups. Anybody have had them?
Old 10-27-2013, 02:52 PM
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I just put in a Thompson motorsports 370 LQ9. Forged pistons and rods. I don't have many km's on it yet but so far so good.
Old 10-27-2013, 02:54 PM
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My compression is 10.8:1 with 799 casting heads from my 5.3. Installed on my LQ9.
Old 10-27-2013, 06:00 PM
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Originally Posted by roland1
I just put in a Thompson motorsports 370 LQ9. Forged pistons and rods. I don't have many km's on it yet but so far so good.
What crank, pistons, and rods are used? Did you get it short or long block? Not many people in this forum are running them, most of threads I read here and there are recommending tsp blocks. What are your plans on this forged motor?
Old 10-27-2013, 06:02 PM
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Originally Posted by roland1
My compression is 10.8:1 with 799 casting heads from my 5.3. Installed on my LQ9.
Why did you choose to run 5.3s heads over 243, or ls3 heads? What cam do you have?


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