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Cam choice for 6.0L SUV

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Old Feb 29, 2008 | 07:36 AM
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Default Cam choice for 6.0L SUV

Just throwing this out there to get some opinions...I have a heavy AWD chevy vehicle 5000lb. Full bolt-ons, built tranny 3200 stall runs high 12's. I have a set of ported LS6 heads and I will probably port the stock intake some. The vehicle is a daily driver, I will probably average 15,000miles a year, so it has to be streetable and dependable, yet still make power. I am having a hard time deciding on the cam...Obviously it HAS to make low-end TQ to get the thing off the line. Its not terribly critical since I have a stall and can give up a little down low to get a little back up top. What are some suggestions on cam choice? I have some thoughts but I'd like to hear others opinions.

Thanks!
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Old Feb 29, 2008 | 08:27 AM
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Keep the ramp rate mild so you can run a beehive spring like a PAC or Comp 918. This will keep the reliability high and the spring change intervals long. Make the intake valve closing point 40 degrees ABDC at .050" and keep the overlap at .050" under 4 degrees for daily driven 6.0L.

224/230 .568/.573" 112LSA +4 advance
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2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
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Old Feb 29, 2008 | 06:33 PM
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On what kind of lobes? XE, XFI, other?
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Old Feb 29, 2008 | 06:53 PM
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Tr220?

Last edited by someday; Feb 29, 2008 at 07:00 PM.
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Old Feb 29, 2008 | 06:56 PM
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Originally Posted by pharmd
On what kind of lobes? XE, XFI, other?
XE lobes. You'll get more reliability running them.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

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Old Feb 29, 2008 | 11:39 PM
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We have a cam designed for trailblazer SS to be used with stock converter

214/220 .559/.564 111.5 LSA

http://www.ls1speed.com/cont.cfm?cid=C0000671
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Old Mar 1, 2008 | 12:52 AM
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just curious, but y a 111.5 LSA? y not an even 112? or 114 for a broad powerband?
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Old Mar 1, 2008 | 09:49 AM
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when you develop a cam, you look at factors of what kind of RPM your going to run, powerband, go from the valve events, you pick your lobes, take into consideration overlap, Lobe separation and ICL is just a number that results from the valve events.
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Old Mar 1, 2008 | 08:02 PM
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Originally Posted by Fraser@SpeedInc
We have a cam designed for trailblazer SS to be used with stock converter

214/220 .559/.564 111.5 LSA

http://www.ls1speed.com/cont.cfm?cid=C0000671
I've actually already got a RPM built level 5 tranny and vig 3200 stall, so with the heads I'm using I could afford a little more duration, sacrificing a little (but not alot) of low end to gain a little more mid range and top end power.
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Old Mar 1, 2008 | 08:12 PM
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go with patrick g said man!! or go with a 226/230 .567/.578 on 112+4 xe lopes
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Old Mar 2, 2008 | 12:30 AM
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Originally Posted by Patrick G
Keep the ramp rate mild so you can run a beehive spring like a PAC or Comp 918. This will keep the reliability high and the spring change intervals long. Make the intake valve closing point 40 degrees ABDC at .050" and keep the overlap at .050" under 4 degrees for daily driven 6.0L.

224/230 .568/.573" 112LSA +4 advance
How is this cam different from Comp Cam 224/230 0.581/0.588, 114.

http://store.summitracing.com/partde...1&autoview=sku

Can it be run with stock stall in a 6.0L truck (4300Ib).
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Old Mar 2, 2008 | 08:26 AM
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Originally Posted by bluecamaroz28
How is this cam different from Comp Cam 224/230 0.581/0.588, 114.

http://store.summitracing.com/partde...1&autoview=sku

Can it be run with stock stall in a 6.0L truck (4300Ib).
That has the faster XE-R lobes which will not work with Beehive springs. There is also no advance listed on the spec, but even if it was +4, the intake valve closing point would be too late for this heavy vehicle application. You'll want the IVC to be at 40 degrees ABDC at .050".
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Mar 2, 2008 | 09:55 AM
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Originally Posted by Patrick G

224/230 .568/.573" 112LSA +4 advance
Originally Posted by eric01ss
go with patrick g said man!! or go with a 226/230 .567/.578 on 112+4 xe lopes
pharmd the cam going in my SS is pretty close to those two. Vector spec'd it and they will be putting it in on march 10th. I'll let you know how it goes.
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Old Mar 2, 2008 | 12:52 PM
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Originally Posted by Patrick G
That has the faster XE-R lobes which will not work with Beehive springs. There is also no advance listed on the spec, but even if it was +4, the intake valve closing point would be too late for this heavy vehicle application. You'll want the IVC to be at 40 degrees ABDC at .050".
What springs are suitable for this cam? I've used it with stock LS1 heads and beehive springs. I broke a spring and then put a new set of beehives.

I was planning to use the same cam with same heads with beehive milled 0.030 on a 6.0L. Would the added CR help the cam?

ICL is 112. I have the cam spec card, so, how can I find if it has any advance.

Last edited by bluecamaroz28; Mar 2, 2008 at 12:57 PM.
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Old Mar 2, 2008 | 01:35 PM
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Originally Posted by bluecamaroz28
What springs are suitable for this cam? I've used it with stock LS1 heads and beehive springs. I broke a spring and then put a new set of beehives.

I was planning to use the same cam with same heads with beehive milled 0.030 on a 6.0L. Would the added CR help the cam?

ICL is 112. I have the cam spec card, so, how can I find if it has any advance.
I'm not surprised you broke a spring. Beehives are not suitable for XE-R lobes. Your cam is +2 advance if it's at a 112 ICL. If you're putting this in a lighter F-body, that would be OK, but in a heavy SUV, you'll want the earlier IVC and earlier power peak. Patriot Gold duals or Patriot Extreme duals are better for the XE-R lobes. The added compression would help your cam get some better dynamic compression with that 44 degree ABDC intake valve close.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.

Reply
Old Mar 2, 2008 | 02:25 PM
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Thanks, Patrick. Appreciate your help.
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Old Mar 2, 2008 | 04:29 PM
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Originally Posted by JCattSS
pharmd the cam going in my SS is pretty close to those two. Vector spec'd it and they will be putting it in on march 10th. I'll let you know how it goes.
Are you adding ported heads as well? If so what heads are you using? I look forward to your results and accompaning time slip. I am hoping that this is the year these AWD pigs knock down some deep 12's (dare I say high 11's), NA on the stock bottom end.
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Old Mar 2, 2008 | 05:53 PM
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I'm going to leave the heads alone for now. If I wasn't about to take 12 weeks off when our baby is born in May it would be on! Just getting the cam, efans and road tune by Kirk at Vector for now. Hopefully its good for mid 12's! I did ask them about ported 243's and it just isn't in the budget right now with everything going on. Maybe next year if I decide to go that route we'll see what looks good for heads.
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