6.0L Radix Install Underway

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Mar 7, 2011 | 03:32 PM

#21

old motorhead

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From: SE TEXAS

Quote:

Originally Posted by 03tahoe22

Sorry to bring up an old thread but i was searching for what boost levels a LQ9 and MP112 would be at with the pulley sizes. I had a 3.0 pulley on my flex-fuel 5.3 setup and ran 11psi. I dont want to spend the money on a tune with the 3.0 if it isnt enough for a 6.0. Okie5.3 has a 2.8 runs 7.5psi that seems really low! What can i expect with the 3.0? I wanting to run a safe 8-10.....

Boost, with any size pulley, is going to depend how the motor is set up...intake, cam, heads, exhaust. I saw 9psi with MP122 and 2.6" pulley. The motor had ported heads, mild blower cam, and LT headers.

Mar 7, 2011 | 03:41 PM

#22

03tahoe22

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From: Palm Beach, Florida

Stock motor. Stock heads. Stock Cam with the below listed mods.... was it a lq4 or lq9? Heard a lq9 will net an addition lb of boost.

Mar 7, 2011 | 05:08 PM

#23

1bad2k

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Quote:

Originally Posted by 03tahoe22

Stock motor. Stock heads. Stock Cam with the below listed mods.... was it a lq4 or lq9? Heard a lq9 will net an addition lb of boost.

If you're all stock I think the 3.0 might be a little bit much. Why not try the 3.2? Or even throw on a set of longtubes?

Mar 7, 2011 | 06:40 PM

#24

old motorhead

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From: SE TEXAS

Quote:

Originally Posted by 03tahoe22

Stock motor. Stock heads. Stock Cam with the below listed mods.... was it a lq4 or lq9? Heard a lq9 will net an addition lb of boost.

It was an LQ4 with 243 heads. I'm guessing the resulting c/r was similar to an LQ9. I'm wondering why a little more c/r would result in a 1 lb. boost increase.

Mar 7, 2011 | 06:51 PM

#25

SuperchargedSS

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From: Ft.Lauderdale, FL

Quote:

Originally Posted by laynlow77

congrats! my 4.8 radix rc is a handful, i cant imagine the 6.0

you still rockin a 4.8?? i thought you went 6L a long time ago?

Mar 8, 2011 | 12:34 AM

#26

GMC_DUDE

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From: Western WA

FWIW, my LQ4 w/ mp112, 3.0" pulley, shorty headers, and Magnaflow exhaust makes about 7 psi.

Mar 8, 2011 | 02:45 AM

#27

1SlowHoe

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From: Orlando, FL

Quote:

Originally Posted by SuperchargedSS

you still rockin a 4.8?? i thought you went 6L a long time ago?

That post is almost 3 years old. :p

Mar 8, 2011 | 08:54 AM

#28

03tahoe22

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From: Palm Beach, Florida

The truck is not stock by any means... the internals are stock mods in signature. Is anyone running a 2.75 or 2.60 on a 6.0l. Is this spinning a radix too fast and too hot?

Last edited by 03tahoe22; Mar 8, 2011 at 10:45 AM.