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Comp XR275? Or SS2?

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Old 02-04-2019, 01:34 PM
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Default Comp XR275? Or SS2?
Putting together an LQ4 with 799s milled .030", NNBS intake, 90mm TB, 1.75" headers, 2.5" true duals, 4.10s, 4L80E/3500 stall. Truck is about 4400lbs. (2000 Sierra Stepside with hardly any options)

What cam would be better? I know specs aren't everything, but the SS2 is the larger camshaft on paper. Why these two and not something else? Because they are what I have on the shelf.

The end goal is to have a quick street truck, maybe hit the track a few times per year.
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Old 02-04-2019, 01:44 PM
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I have the xr275 cam in my TMS shortblock with 706s. Gobs of torque and pulls strong to 6500.

My CR is about 11.5:1. Runs fine on 93 with an SD tune.
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Old 02-04-2019, 07:51 PM
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Run both.

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Old 02-05-2019, 11:13 AM
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Just curious, what are the specs on them?
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Old 02-05-2019, 12:07 PM
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Originally Posted by hunterbohanan23
Just curious, what are the specs on them?
XR275

222/224, .568/.566, 112LSA (has +2 advance)
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Old 02-05-2019, 12:26 PM
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The "sloppy stage 2" is 228/230 .585" lift 112 LSA
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Old 02-05-2019, 03:39 PM
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Originally Posted by 86 IROC
The "sloppy stage 2" is 228/230 .585" lift 112 LSA
with +4* advance

(LSA 112* minus intake centerline of 108* = 4* ground in advance)
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Old 02-12-2019, 12:10 PM
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Originally Posted by RedXray
with +4* advance

(LSA 112* minus intake centerline of 108* = 4* ground in advance)
Just realized that you have the same cam, did you ever get on a chassis dyno?
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