G5X-3 112 vs. 114
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Joined: Dec 2002
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From: SE Mass USA
G5X-3 112 vs. 114 i was wondering if you guys could post up some graphs, and tell me what you shift at the track. I did a search and couldnt come up with much surprisingly.
Im looking for cam only type numbers/ shift points on a M6.
Im looking for cam only type numbers/ shift points on a M6.
The 112 will net a higher HP #, it moves the power band down into the power band, aka the power will kick in earlier. For cam only, non FI ... a 112 is probably the better choice. And it'll sound meaner too 
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From: SE Mass USA
Originally Posted by FstBlkz28
The 112 will net a higher HP #, it moves the power band down into the power band, aka the power will kick in earlier. For cam only, non FI ... a 112 is probably the better choice. And it'll sound meaner too
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Originally Posted by black_z
Isnt P2V clearance extremely tight on a 112?
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Originally Posted by 02CamaroZ28
I agree but I have a NX kit sitting in my room, and id rather not rev to 6800
The cam I have in my car made power all the way to 7000 in a forged engine. In mine, I pull it to 6400-6500.
Originally Posted by shudog
LSA does not affect piston to valve clearance. LSA is Lobe Separation Angle. Only the lift would really affect the P2V clearance and even then you don't have to worry about that unless you have milled heads and/or cams with more than .600 lift
Originally Posted by shudog
LSA does not affect piston to valve clearance. LSA is Lobe Separation Angle. Only the lift would really affect the P2V clearance and even then you don't have to worry about that unless you have milled heads and/or cams with more than .600 lift
you are incorrect.
max valve lift occurs when the piston is at the BOTTOM of the cylinder. HOW LONG (aka the duration) the valve stays open is what causes ptv issues.
i've looked at many dynos regarding both cams, it appears when properly set up, both will like to be shifted around 7k (maybe 6,800 at the earliest) and will make similar power (within a few hp). both have beautiful power curves...and both have a very nice idle. being an m6, i would opt for the 114 lsa, simply because the ptv is tighter on the 112 lsa. you have a little more cushion with the 114 lsa if you ever miss a shift or tag rev limiter...also, a 114 lsa would react better to n2o.
i think the g5x series of cams are simply badass. call lg and ask about the g5x4.
ok, if you are spraying you want an x3 on a 114. nitrous likes a lot of rpm. You will probibly need to spin to 6800, don't worry I spin mine to 6950 and I have an a4. the 114 will make power a little higher up and will probibly make a few more peak ponies. both cams will make good powa. the PTV is a little tighter on a 112 but it will still fit, mine did. although you can expect around 410 rwhp on a good tune and mid 11's assuming you know how to drive it 
. I plan to run 10's this season on a H/C A4 powered by a x3
. I plan to run 10's this season on a H/C A4 powered by a x3 
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From: BFE
Originally Posted by shudog
LSA does not affect piston to valve clearance. LSA is Lobe Separation Angle. Only the lift would really affect the P2V clearance and even then you don't have to worry about that unless you have milled heads and/or cams with more than .600 lift
Lift has little effect on PTVC. It is the Duration and LSA that affect it (ie: the VE's)
You can have a cam of equal size fit just by changing LSA.
Like my Trqr V2, It will not fit my heads (2.04 int/1.575 exht) on a 112 but on a 113+0 it does perfectly.
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Originally Posted by shudog
LSA does not affect piston to valve clearance. LSA is Lobe Separation Angle. Only the lift would really affect the P2V clearance and even then you don't have to worry about that unless you have milled heads and/or cams with more than .600 lift
Then why does LG fly-cut when using the 112 lsa??? and/or recommend it to their customers that are buying the 112 lsa G5X3???
There is no need to spin it to the moon, and there is no reason these shortblocks wont live at 6800. Set the limiter at 6900, and shift it at 6700.
114 will make peak power from 62-6400 depending on the combo
112 will make peak power 61-6300 depending on the combo.
114 will make peak power from 62-6400 depending on the combo
112 will make peak power 61-6300 depending on the combo.
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From: Herndon, VA
Originally Posted by shudog
LSA does not affect piston to valve clearance. LSA is Lobe Separation Angle. Only the lift would really affect the P2V clearance and even then you don't have to worry about that unless you have milled heads and/or cams with more than .600 lift
[EDIT] Darn, I knew I should have read down further before replying to this one...
Thread Starter
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Joined: Dec 2002
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From: SE Mass USA
Thanks for the help guys, Ill shoot LG a call sometime in the future and see what the reccomend. Im leaning towards the 114 if the stock short block can handle the rpm's safely like most of you say.
Maybe theyll tell me the x2 is better for me.
Maybe theyll tell me the x2 is better for me.
