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VHP 080 cam gains in a 6.0ltr

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Old 03-05-2009 | 05:15 PM
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Originally Posted by 05HD1500
Very helpfull however, i really would like to know rpm rather than MPH. What RPM is your 65-70 and your 80? My 80 mph is like 2400... Thanks Again!! also what LSA on the small cam? 115,116?
60 is about 1500,80 is about 2300 .My gears are 3:42,s lsa 112. Here,s the cam

http://www.lingenfelter.com/mm5/merc...egory_Code=C32
Last edited by Sheephead; 03-05-2009 at 07:14 PM. Reason: confused
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Old 03-05-2009 | 06:04 PM
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Originally Posted by Sheephead
65-70 is about 2500,80 is about 3000 .My gears are 3:42,s lsa 112. Here,s the cam

http://www.lingenfelter.com/mm5/merc...egory_Code=C32
how are you running such a high rpm with 3.42s? thats higher then my 4.10s with a 29" tire...
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Old 03-05-2009 | 06:08 PM
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he's got the 4L60E trans. that couldbe the diff.
my 2500HD crewcabS/B 4x4 w/ BFG 265's and 4:10's runs about 2600 w/ the 'verter locked.


anyone know the specs on the OEM 2001 6.0ltr cam?
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Old 03-05-2009 | 06:10 PM
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Originally Posted by Glenn98ZM6
he's got the 4L60E trans. that couldbe the diff.
my 2500HD crewcabS/B 4x4 w/ BFG 265's and 4:10's runs about 2600 w/ the 'verter locked.


anyone know the specs on the OEM 2001 6.0ltr cam?
i have a 4l60e trans... if hes got a 2500hd you mean 4l80e.
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Old 03-05-2009 | 07:13 PM
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I was wrong about the rpms and speeds,must of confused it with one of other vehicles.Just took my truck for drive 1500rpm@60 and 2300@80. sorry obout the confusion.
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Old 03-05-2009 | 07:30 PM
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I tow right about 63 mph, Witha 80 e tranny and 4.10's w/ 35" tire puts me right at 2000RPM, i would love to gain torque right there!
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Old 03-05-2009 | 07:33 PM
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You need to get your compression UP. Your engine is only 9.4:1. Get your compression up around 10.6:1 (which alone will give you a ~5% increase in torque) and add something like a 206/212 XFI lobed cam.
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Old 03-05-2009 | 07:39 PM
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Originally Posted by 05HD1500
I tow right about 63 mph, Witha 80 e tranny and 4.10's w/ 35" tire puts me right at 2000RPM, i would love to gain torque right there!
Another thing i think that contributes to my low end torque is the 5.3 heads on my lq4.This bumps up my compression to about 10:1.
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Old 03-05-2009 | 07:42 PM
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Originally Posted by GMCtrk
You need to get your compression UP. Your engine is only 9.4:1. Get your compression up around 10.6:1 (which alone will give you a ~5% increase in torque) and add something like a 206/212 XFI lobed cam.
That,s exactly what i was running.Torque monster
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Old 03-05-2009 | 07:53 PM
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10.6 will require 93 octain, right?
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