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

224R vs. 228R

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Old Apr 13, 2009 | 08:04 PM
  #31  
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Ok, just out off curiousity, I've been playing round with spec'ing a custom ground cam. I've beenlooking at off-the-shelf cams for simplicity, but I kind like the idea of having one custom ground. I'm a complete noob, but I've been googlin some stuff. Here's what I've come up with. Keep in mind, I want more torque down low and in the mid range, but I do want an increase in to end. My truck hardly sees more than 5500 rpm 90% of the time. How would this cam perform?

Intake Lobe: 220 .581” XER or 224 .581” XER
Exhaust Lobe: 224 .581” XER
Lobe Seperation: 112+2 LSA
Intake Center Line: 106 and advance it to 104-102 when installing

Comp 918 Valve Springs and TSP 7.425” Pushrods
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Old Apr 13, 2009 | 08:57 PM
  #32  
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Originally Posted by 0235SS93
Intake Lobe: 220 .581” XER or 224 .581” XER
Exhaust Lobe: 224 .581” XER
Lobe Seperation: 112+2 LSA
Intake Center Line: 106 and advance it to 104-102 when installing

Comp 918 Valve Springs and TSP 7.425” Pushrods
IMO get the 220/220 XER on a 112+4

Don't do the stuff i highlighted in orange.... That would mak the cam a 112+6...
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Old Apr 13, 2009 | 09:07 PM
  #33  
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Ok, you'll have to forgive me, I'm a cam noob! WHy the 220/220 over the 224/224. (Not questioning you, just curious)
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Old Apr 13, 2009 | 09:09 PM
  #34  
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I agree with Corey 100% on that call
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Old Apr 13, 2009 | 09:15 PM
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Originally Posted by 0235SS93
Ok, you'll have to forgive me, I'm a cam noob! WHy the 220/220 over the 224/224. (Not questioning you, just curious)
With a 6.0 you can go either way safely, but the 220 will save you some low end while still gaining up top. The 220 will give you a nice broad torque curve over stock.
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Old Apr 13, 2009 | 09:55 PM
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Ok, sounds good. This is my DD truck, so a smaller cam might be a lil better for streetablility anyways. How's that 220 cam with light towing/hauling? The heaviest thing I might ever haul is my harley sporter or atv. I don't tow much, a small bass boat or golf cart every once in a while.
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Old Apr 13, 2009 | 10:01 PM
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So is the number after the + in LSA the ground-in advance?
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Old Apr 14, 2009 | 12:08 AM
  #38  
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Originally Posted by 0235SS93
So is the number after the + in LSA the ground-in advance?
Yessir...
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Old Apr 14, 2009 | 12:13 AM
  #39  
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Originally Posted by 0235SS93
Ok, sounds good. This is my DD truck, so a smaller cam might be a lil better for streetablility anyways. How's that 220 cam with light towing/hauling? The heaviest thing I might ever haul is my harley sporter or atv. I don't tow much, a small bass boat or golf cart every once in a while.
That cam in a 6.0 would haul light loads just fine...if you did heavier towing I'd recommend a little less duration, but for what you tow you'll be OK. Plus, having the 4* of advance ground in will help bring the torque on a little sooner (112+4)
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Old Apr 14, 2009 | 06:33 PM
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I talked to my mechanic/friend today about installing the cam, pushrods, and valvesprings. He sked me why I wasn't putting in new lifters too. I told him that I never heard of doing that and that it wasn't necessary. He said it's risky to not replace them. He is used to building older sb and bb chevys for race cars though. I told him as long as he had a tool to hold the lifters up while sliding in the cam, he wouldn't have a problem. Am I right? Or is he?

BTW, what length pushrods do I need?
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