INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

LQ9 w/ 243's...Cam choice?

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Old Aug 9, 2009 | 05:21 PM
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Damn good info, I have a 218/226 going in the 6.0 I have slated for my wife's Yukon
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Old Aug 10, 2009 | 12:17 AM
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Anyone have any good dynos with the two said cams?? 218/226 or thereabouts?preferably starting at around 2000 rpm??
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Old Aug 11, 2009 | 05:03 PM
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214/218 .555/.562 111lsa

How would this cam perform in an LQ9? Would It be ok to run this cam on the LS6 springs from SDPC for $57? The ad on SDPC says max lift .550"

or this: 218/214 .578/.578 114 LSA but on a 112 LSA? Obviously I'll need more than LS6 springs!

Last edited by 0235SS93; Aug 11, 2009 at 06:34 PM.
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Old Aug 11, 2009 | 08:58 PM
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Originally Posted by 0235SS93
214/218 .555/.562 111lsa

How would this cam perform in an LQ9? Would It be ok to run this cam on the LS6 springs from SDPC for $57? The ad on SDPC says max lift .550"

or this: 218/214 .578/.578 114 LSA but on a 112 LSA? Obviously I'll need more than LS6 springs!
Depending on how agressive the lobes are, you'll probably be OK with the LS6 springs with that first cam. Lingenfelter recommends the LS6 springs with their cams that have .57x+ lift.

I feel that either of those cams will work well in an LQ9. My opinion is that the first cam is more suited for your needs that you listed in the original post, but the second one will work also, with the proper tuning like Zippy mentioned. I'd recommend a torque converter that stalls somewhere between 2400-3k for the second cam to help get you into the powerband quicker, but you mentioned that you have no plans for a converter. The first cam would be best with a mild converter also (say 2600), but it will still be good in a 6.0 with the factory verter.
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Old Aug 11, 2009 | 09:03 PM
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How much hp/tq do you think I'd gain with that first cam?
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Old Aug 11, 2009 | 09:18 PM
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I've never been good at guessing numbers, but I'd think over 30-35 tq and hp?
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Old Aug 11, 2009 | 11:04 PM
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Originally Posted by 0235SS93
214/218 .555/.562 111lsa

How would this cam perform in an LQ9? Would It be ok to run this cam on the LS6 springs from SDPC for $57? The ad on SDPC says max lift .550"

or this: 218/214 .578/.578 114 LSA but on a 112 LSA? Obviously I'll need more than LS6 springs!
I agree with Bud. The first of the two would be your better choice. That cam would be impressive with a 2600 stall. A simple I6 TB converter would do the job. That cam should make big torque and very good hp for a cam of that size and have a slightly choppy idle. Tuning the idle will be alot like your TR224 on a stock compression LQ9.
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Old Aug 11, 2009 | 11:08 PM
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Well, i can get it from sdpc for a good price, so i think thats my cam! And who knows, a tb stall might make a good xmas present! How would a tb stall work with light towing?
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Old Aug 11, 2009 | 11:46 PM
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You should be able to tow up to 4500-5500lbs without much trouble using the TB converter and a good cooler.
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Old Aug 12, 2009 | 12:00 AM
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That'll work! Since my father is a rebuilder, i might have to haul one in every once in a while...I'll prolly go with a Circle D reworked tb stall though.
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