Higher lift TR220?
01-15-2006, 02:31 PM
#21
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i dont know yet since im still gathering a few more parts to get it installed. but in the next few weeks it should be in the truck. i didntget a card with it sinced its a used cam. but you can go to their site and see if they have the specs on it
01-15-2006, 03:15 PM
#22
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Originally Posted by Quik
you can look into the GT2-5 cam its 222/222 .566/.566 112lsa its the one i currently have
So now, I am considering a 220/220 high lift using TR's lobes. 
Let us know how you like the GT2-5.
Last edited by Tractionless; 01-15-2006 at 03:31 PM.
01-15-2006, 07:07 PM
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Originally Posted by Tractionless
I was also considering the gt2-5 a while back when it was $250 new. Now the price is up to $370. Thats $120 bucks more... So now, I am considering a 220/220 high lift using TR's lobes.
Let us know how you like the GT2-5.
So now, I am considering a 220/220 high lift using TR's lobes. Let us know how you like the GT2-5.
01-16-2006, 06:48 AM
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Originally Posted by joshluther
Sportside what do you have 1Gb of cam cards on your computer? Have you had any of your own cams cut yet?
Calculating the valve events doesn't require a cam card.
All you need is the two durations, LSA, and ICL.
How to calculate VEs:
Example cam 230/236 112LSA (+4) = 108ICL
IVO = ((intake duration/2)-ICL)
Ex: ((230/2)-108)= 7 BTDC (negatives indicate ATDC)
IVC = ((-IVO) + intake duration - 180)
Ex: ((-7) + 230 - 180) = 43 ABDC
ECL = ((2 * LSA) - ICL)
Ex: ((2 * 112) - 108) = 116
EVC = ((exhaust duration / 2)- ECL)
Ex: ((236 / 2) - 116) = 2 ATDC (negative indicates BTDC)
EVO = ((-EVC) + exhaust duration - 180)
Ex: ((-2) +236 - 180) = 54 BBDC
Overlap = ((intake duration + exhaust duration)/2) - (2 * LSA)
Ex: ((230+236)/2) - (2 * 112) = 9
So, a 230/236 112+4 has a 7* IVO, 43* IVC, a 54* EVO, 2* EVC and overlap comes out to 9*.
(7, 43, 54, 2 and 9* of overlap)
The TR220-112: (2, 38, 46, -6 & -4* of overlap)
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