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Build idea

Old Aug 22, 2010 | 07:25 PM
  #11  
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Originally Posted by ChrisBrekken
ok what about the "high lift" version of that cam, any good words about that or same **** different name?
I have been told it will make more peake power but couldn't find any dyno sheets. I had something similar ground but Have yet to finish the engine....
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Old Aug 22, 2010 | 08:41 PM
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hmm well that's not really what i'm lookin for. i'm lookin to maybe go a touch over 400 hp/tq. but i want the torque down low and to carry throughout the rpm range so if i have to pull a boat or 5000 pound trailer it can pull hills and not bog down cuz i hate goin 55. stupid oregon speed limit
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Old Aug 22, 2010 | 08:59 PM
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I think that either my cam (206/212 .515/.522 114) or the Vinci "Ultra-Torque" (210/218 .551/.551 116) would probably suit your needs...may not hit 400 at the crank, but both have flat broad torque curves and can get by with the factory tq converter. The venerable Comp 212/218 would probably work well also, as mentioned, it's a proven performer.
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Old Aug 22, 2010 | 09:18 PM
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ok and could you explain to me why i would need a higher stall with a bigger cam even though my transmission would be able to withstand 500 hp? I'm not as knowledgeable on automatic transmissions as i would like so i guess i just don't understand
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Old Aug 22, 2010 | 09:22 PM
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Seems as though the Comp 212/218 is the most recommended torque cam. I'll be pulling mine in a couple weeks, as soon as I get my 6.0 built.
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Old Aug 22, 2010 | 10:04 PM
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Originally Posted by ChrisBrekken
ok and could you explain to me why i would need a higher stall with a bigger cam even though my transmission would be able to withstand 500 hp? I'm not as knowledgeable on automatic transmissions as i would like so i guess i just don't understand
The higher stall converter will slip up to or around it's advertised RPM bringing you into the powerband of the cam quicker. As a cam gets "bigger" (more duration), it's poweband rises higher, as does where it starts to make power. You want to match your converter, gears, cam, and heads to work together
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Old Aug 22, 2010 | 11:44 PM
  #17  
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ok ya that all makes sense, so theoretically speeking if i were to go from a 114 lsa or whatever stock is to a 112 wouldn't that bring the peak power down in the rpm band? it would idle rougher but would lower the peak right?
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Old Aug 23, 2010 | 01:24 AM
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From: JunkYard
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Originally Posted by ChrisBrekken
hmm well that's not really what i'm lookin for. i'm lookin to maybe go a touch over 400 hp/tq. but i want the torque down low and to carry throughout the rpm range so if i have to pull a boat or 5000 pound trailer it can pull hills and not bog down cuz i hate goin 55. stupid oregon speed limit
Your not gonna reach those numbers at the wheels on a stock motor with out . The cams that have been recomended are all good cams with little to no trade off down low. You may want to stick around and do a little more research to full fill your goals.

FWIW a stock LM7 cam is 190/191 int/exh @ 0.05" duration 0.466" / 0.457" int/exh lift on a 114 LSA

Also upgradeing the Tq converter does a few things.
1. It reduces rotating mass as there usually smaller in diameter then the stock one. This allows the engine to rev up faster.

2. There modifided inside so that there is a delay in its engagement. This allows you to get in the Power band before you start moving. While driving around I noticed the factory one would start moving at around 800rpm after releasing the break from a stop light. With the new 2600 stall It's more around 1200-1500 rpm before I notice the truck starting to move from a stop light.

The factory one would brake stall to around 1500 RPM.
My New Circle D Brake stalls to around 2500 RPM

My truck is more responsive and It makes it eaiser when I need to pass some one.

FWIW everyone wanted me to run a 3200 stall, but knowing this was my DD that ocasionally see's hauling and possibly towing Vs. more of a performance track vehicle. I knew I would be better suited with the smaller one.

I surprised a TBSS the other day with about 800 LBS of Junk In the rear of my X cab. I know I can't beat one but cutting the better light with the stall converter shocked the hell out of the other driver esspecially with the weight in the back. Since I was out front It was a good sprint till about 40 when it started to walk out in front of me. I let out around 50 as it was pulling away.

Last edited by 1FastBrick; Aug 23, 2010 at 02:40 AM.
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Old Aug 23, 2010 | 12:26 PM
  #19  
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ok thanks so what ur sayin is that i dont need some crazy 3600 stall but the addition of a 2500 or maybe little lower would give the cam some free range in order to get to its peak power before the truck has to go and that when that comes it goes like a freakin rocket? makes sense. i just was warry about it because i go offroad some but now that i think bout it i dont do any crawling so i dont need such a low stall. thx
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Old Aug 23, 2010 | 12:43 PM
  #20  
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lookin at the CircleD 300mm between 2200-2400 i think that should work perty good, either that or monster transmissions has one that's 2300-2500 and since i'm gettin the transmission rebuild kit from them figure might as well put it all in one box lol
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