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114+2 cam timing question??

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Old Nov 21, 2007 | 04:50 PM
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Default 114+2 cam timing question??

When setting cam timing on a custom cam ground on a 114+2......

We got a adj. timing set so on the crank gear, we set the gear on the a2 (advanced 2*) correct? As opposed to the stock placement?


And why do cam guys grind them that way? If we set it up for just the 114 would it even work or will you trash the vavletrain? Why not just grind it on a 116.

These are the cam specs:
224/230 dur.
567/578 lift
on a 114+2 lsa
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Old Nov 21, 2007 | 05:55 PM
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It would be a 114 lsa installed on a 112 icl

READ THE DAMN CAM GUIDE

by haveing the adv ground in you put it in dot to dot.
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Old Nov 21, 2007 | 06:03 PM
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Originally Posted by quick346
It would be a 114 lsa installed on a 112 icl

READ THE DAMN CAM GUIDE

by haveing the adv ground in you put it in dot to dot.
well said. watch your ivo, and ivc events. don't neccesarly depend on icl or ecl.
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Old Nov 21, 2007 | 06:07 PM
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ok, i know how to do a cam, i did it in a few cars but new to the whole 114+x design so bare with me please. SO then sounds like your saying.....

Install the timing chain dot-to-dot (12/6) like normal and they actually ground the cam 2* off center?

And we only have the cam card and no instructions or guide. He bought it used off a member here. So sorry for asking, were not stupid, just new.
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Old Nov 21, 2007 | 07:28 PM
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the LSA and ICL are two toally diff things. it is ground on the lsa that will not change. the ICL is how you install it
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Old Nov 21, 2007 | 07:35 PM
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Originally Posted by Taubr Unit
ok, i know how to do a cam, i did it in a few cars but new to the whole 114+x design so bare with me please. SO then sounds like your saying.....

Install the timing chain dot-to-dot (12/6) like normal and they actually ground the cam 2* off center?

And we only have the cam card and no instructions or guide. He bought it used off a member here. So sorry for asking, were not stupid, just new.
yes you are right install it dot to dot. the cam is still on a 114 LSA but will be installed on a 112 ICL at dot to dot due to it has 2 deg adv grond into it. witch is the same if it had zero adv ground into it and you installed it 2 deg adv with the key's on the chain and gear's.

you are thinking right but the advance is already in there. dot to dot it.check the ptvc and run her
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Old Nov 21, 2007 | 08:18 PM
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ok i get it now. The cam was out of a blower car and going into a nitrous car. So whats the idea of grinding it +2* advanced?
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Old Nov 21, 2007 | 09:05 PM
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damn dude you just don't get it.

they put the advance into it so the average joe can just install and go

if you have so much experience you should know this

I am over and out of this thread
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Old Nov 21, 2007 | 09:32 PM
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You can grind the advance in the cam and not run an adjustable timing chain.
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Old Nov 22, 2007 | 10:39 AM
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I have mechanical experiance but i said i was still new to the tech part of it and still learing that aspect of it all. I get everything about the advance and how to install it, the car is already running... But what is the point of it being 2* advanced as opposed to any other cam not being advanced?
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Old Nov 22, 2007 | 03:10 PM
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a lot of ls1 cams have advance ground into them to bring the peak power range down a little bit to make it more daily driveable, since people tend to go with cams that are too big for their setup. If it was ground straight up many cams would feel like a dog at lower rpms
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Old Nov 22, 2007 | 03:35 PM
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Originally Posted by Big Z
a lot of ls1 cams have advance ground into them to bring the peak power range down a little bit to make it more daily driveable, since people tend to go with cams that are too big for their setup. If it was ground straight up many cams would feel like a dog at lower rpms
bingo, give the man a cigar. And he was very pleasant about it.
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Old Nov 22, 2007 | 04:57 PM
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So advancing the timing makes a big cam streetable, got it. So is that the same idea with a adj. timing set. Like my buddy with a MS4 cam, if he puts his timing +2*, it will have better street manners with a better torque curve on the low end. Basically in a nut shell..
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Old Nov 22, 2007 | 05:39 PM
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only to an extent, you have to be pretty familiar with what the ground in advance is and what the valve events of that particular cam is. myself, i dont know a whole lot about that sort of thing, so i kind of go by what i read
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Old Nov 22, 2007 | 05:42 PM
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Well i dont plan on opening up my own shop eaither, lol. But at least i know about how it works any why. I wont hold ya to anything. But it does make sence now. Once you think you it all, more tech. stuff like this comes up. And people wonder why they pay so much money for for a shop that knows what there doing/know vs. some garage mechanic, lol.
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Old Nov 22, 2007 | 05:51 PM
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Originally Posted by Taubr Unit
So advancing the timing makes a big cam streetable, got it. So is that the same idea with a adj. timing set. Like my buddy with a MS4 cam, if he puts his timing +2*, it will have better street manners with a better torque curve on the low end. Basically in a nut shell..
it moves the power band down in the rpm range giving more low end power than it may have. Increasing the LSA moves the lobes further apart and therefore decreases the overlap. to much over lap and your motor does not have enough vacuum so when the overlap happens at low idle rpm the exhaust and the intake valve are open at the same time and exhaust gases can backup into the intake (rough idle).
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Old Nov 22, 2007 | 05:56 PM
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I know what lsa means and what not and how it works and what it does. So with this cam being a 114+2, what if we put the crank gear -2*? Would that make his peak power higher then? Or would it even work without the valves hitting the pistons.
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Old Nov 22, 2007 | 06:26 PM
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Originally Posted by Taubr Unit
I know what lsa means and what not and how it works and what it does. So with this cam being a 114+2, what if we put the crank gear -2*? Would that make his peak power higher then? Or would it even work without the valves hitting the pistons.
I think the only way you can do that is if you have an adjustable timing set.
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