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Time to cam the radix 5.3, suggestions...

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Old 12-14-2005, 05:29 PM
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Default Time to cam the radix 5.3, suggestions...

Im pretty sure I want to go with the LPE GT2-3, 207/220 .581/.587 118.5cl.

I live in Cali, so have to be careful about smog. I will not be upgrading to a higher stall, currently stalled at 2000 rpm.

It seems like the general consesus is that the radix likes higher exhaust duration and close to stock intake duration. Idling like stock is not a bad characteristic for a radix cam.

What about the GT7 cam, 208/230 .554/.556 121 cl ?

I know Vinci has more aggresive cams, but 03gmc has not had favoravle results with his cam and rocker arm package. Not to mention it is more expensive.

Any thoughts or opinions???
Old 12-14-2005, 06:26 PM
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I believe Blownchevy is runin the LPE GT2-3 cam and highly recomends it. Do you not run the efans I sold you.
Old 12-14-2005, 06:42 PM
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I do, just forgot to put them in my sig. I know the gt2-3 is a proven performer, just seeing if there is something that has netted better results.

Sig fixed by the way.
Old 12-14-2005, 06:42 PM
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Originally Posted by j's01silverado
Im pretty sure I want to go with the LPE GT2-3, 207/220 .581/.587 118.5cl.

I live in Cali, so have to be careful about smog. I will not be upgrading to a higher stall, currently stalled at 2000 rpm.

It seems like the general consesus is that the radix likes higher exhaust duration and close to stock intake duration. Idling like stock is not a bad characteristic for a radix cam.

What about the GT7 cam, 208/230 .554/.556 121 cl ?

I know Vinci has more aggresive cams, but 03gmc has not had favoravle results with his cam and rocker arm package. Not to mention it is more expensive.

Any thoughts or opinions???
LPE told me to run the GT7 it would be better to have a very free flowing exhaust. Otherwise the gt2-3 was a better choice. Both idle near stock.
Old 12-14-2005, 06:48 PM
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I had the compcam 212/218 .557/.562 114° and worked amazing without a stall.
Idle was almost like stock.
Old 12-14-2005, 06:52 PM
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Originally Posted by moregrip
LPE told me to run the GT7 it would be better to have a very free flowing exhaust. Otherwise the gt2-3 was a better choice. Both idle near stock.
But you have a 6.o, I wonder how that changes things. I have a custom header pipe coming from oxidizer/Richard. 2.5" mandrel bent stainless steel piping with metallic cats flowing into an x, so I think my exhaust will flow well enough. Richard said that the set up will flow 500+ cfm per side, I think.

What cam did you end up going with?
Old 12-14-2005, 07:19 PM
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When I did my 6L swap I put in a Vinci 062 cam. 210/218 551/551 (52*) 112lsa it does NOT idle near stock power from 1900-6000rpm. I haven't gotten the tune worked out but the TQ right now is sweet
Old 12-14-2005, 07:36 PM
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Originally Posted by j's01silverado
But you have a 6.o, I wonder how that changes things. I have a custom header pipe coming from oxidizer/Richard. 2.5" mandrel bent stainless steel piping with metallic cats flowing into an x, so I think my exhaust will flow well enough. Richard said that the set up will flow 500+ cfm per side, I think.

What cam did you end up going with?
Sounds like your a candidate for the GT7 then

As far as my cam selection goes, I've not made that decision yet.
Old 12-14-2005, 09:28 PM
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Originally Posted by The_Mexican
I had the compcam 212/218 .557/.562 114° and worked amazing without a stall.
Idle was almost like stock.
Any dyno or track time improvements with cam swap? Any loss in boost?
Old 12-14-2005, 09:32 PM
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Originally Posted by 1SlowHoe
When I did my 6L swap I put in a Vinci 062 cam. 210/218 551/551 (52*) 112lsa it does NOT idle near stock power from 1900-6000rpm. I haven't gotten the tune worked out but the TQ right now is sweet
The intake and exhaust duration are quite close to the GT2-3 cam, however the lsa is quite different. I wonder how the lsa differential affects hp and tq?


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