custom grind cam help/advise
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Teching In
Joined: Jan 2014
Posts: 40
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custom grind cam help/advise ok so im going to get a custom ground cam from texas speed for my lm7 motor. it will have an ls2 intake/injectors stock
the heads will be sent to texas speed and will receive their porting job (http://www.texas-speed.com/p-1172-pr...-castings.aspx)
now were left with the cam, I am going to get this setup (http://www.texas-speed.com/p-1159-pr...-castings.aspx)
I have emailed and talked to texas speed about the cams offered and they are just too big for me. they have said its ok to get a custom one with the kit instead not additive price! I am baisically modeling the cam after the 02-04 ls6 cam. 204 218 .551 .547 117
I will be going a bit bigger and have done a lot of research and a majority says to go with not so much a larger lift but more duration which makes sense to me.
what I have so far intake 220 .564
exhaust 222 .568
lsa 114
the only thing that gets me is the icl intake center line I really have no idea what this is and need help the options go from 106-118
this is a street/ occasional strip daily driver and want to preform well on the street. any help is greatly needed/ appreciated!
the heads will be sent to texas speed and will receive their porting job (http://www.texas-speed.com/p-1172-pr...-castings.aspx)
now were left with the cam, I am going to get this setup (http://www.texas-speed.com/p-1159-pr...-castings.aspx)
I have emailed and talked to texas speed about the cams offered and they are just too big for me. they have said its ok to get a custom one with the kit instead not additive price! I am baisically modeling the cam after the 02-04 ls6 cam. 204 218 .551 .547 117
I will be going a bit bigger and have done a lot of research and a majority says to go with not so much a larger lift but more duration which makes sense to me.
what I have so far intake 220 .564
exhaust 222 .568
lsa 114
the only thing that gets me is the icl intake center line I really have no idea what this is and need help the options go from 106-118
this is a street/ occasional strip daily driver and want to preform well on the street. any help is greatly needed/ appreciated!
Launching!
Joined: Oct 2012
Posts: 258
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From: Canada
ICL represents where the intake lobe's peak lift occurs in relation to crankshaft rotation, measured in degrees. You can use this value to grind a retard or advance into your cam from the get-go. so, lets say you do go with that 114LSA you could have the ICL set at 116 and you will have advanced the cam 2*, then the other way if you get an ICL of 112 you will retard the cam 2*. Google "cam phasing" too and you'll find some good info on the subject. Can you tell I'm ***** deep in choosing a cam myself right now! Hahahahha...
Joined: Mar 2007
Posts: 1,145
Likes: 50
From: Saskatchewan, Canada - where arguing "DA" is for the slow and weak...
Here are last year's lobes from Comp: http://www.compcams.com/Technical/Ca...obeCatalog.pdf
Just to add a degree of difficulty to the matter.
And do not simply buy into the "shelf grind" hype, you have options and you have control ($$$)... make them work for it - just like strippers.
Just to add a degree of difficulty to the matter.
And do not simply buy into the "shelf grind" hype, you have options and you have control ($$$)... make them work for it - just like strippers.
Launching!
Joined: Oct 2012
Posts: 258
Likes: 0
From: Canada
I will add for you too bud, careful with clearance when playing with ICL. You'll get low end torque retarding the cam and you'll get high end power advancing it. With either you are reducing clearance on either the intake or exhaust valve so depending on clearance you are dealing with in your cam choice to begin with, adjust ICL with great caution
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ICL represents where the intake lobe's peak lift occurs in relation to crankshaft rotation, measured in degrees. You can use this value to grind a retard or advance into your cam from the get-go. so, lets say you do go with that 114LSA you could have the ICL set at 116 and you will have advanced the cam 2*, then the other way if you get an ICL of 112 you will retard the cam 2*. Google "cam phasing" too and you'll find some good info on the subject. Can you tell I'm ***** deep in choosing a cam myself right now! Hahahahha...
I will add for you too bud, careful with clearance when playing with ICL. You'll get low end torque retarding the cam and you'll get high end power advancing it. With either you are reducing clearance on either the intake or exhaust valve so depending on clearance you are dealing with in your cam choice to begin with, adjust ICL with great caution
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Joined: Oct 2012
Posts: 258
Likes: 0
From: Canada
Holy hek you are 100% correct sir and thank you for catching that! Ive had my head into this craziness for three straight weeks figuring out what I am up too and that is the complete reverse of what I should have said... wow, thanks again for catching that. You are no dick bud.
PM sent to OP to get in and read this
PM sent to OP to get in and read this
ok so im going to get a custom ground cam from texas speed for my lm7 motor. it will have an ls2 intake/injectors stock
the heads will be sent to texas speed and will receive their porting job (http://www.texas-speed.com/p-1172-pr...-castings.aspx)
now were left with the cam, I am going to get this setup (http://www.texas-speed.com/p-1159-pr...-castings.aspx)
I have emailed and talked to texas speed about the cams offered and they are just too big for me. they have said its ok to get a custom one with the kit instead not additive price! I am baisically modeling the cam after the 02-04 ls6 cam. 204 218 .551 .547 117
I will be going a bit bigger and have done a lot of research and a majority says to go with not so much a larger lift but more duration which makes sense to me.
what I have so far intake 220 .564
exhaust 222 .568
lsa 114
the only thing that gets me is the icl intake center line I really have no idea what this is and need help the options go from 106-118
this is a street/ occasional strip daily driver and want to preform well on the street. any help is greatly needed/ appreciated!
the heads will be sent to texas speed and will receive their porting job (http://www.texas-speed.com/p-1172-pr...-castings.aspx)
now were left with the cam, I am going to get this setup (http://www.texas-speed.com/p-1159-pr...-castings.aspx)
I have emailed and talked to texas speed about the cams offered and they are just too big for me. they have said its ok to get a custom one with the kit instead not additive price! I am baisically modeling the cam after the 02-04 ls6 cam. 204 218 .551 .547 117
I will be going a bit bigger and have done a lot of research and a majority says to go with not so much a larger lift but more duration which makes sense to me.
what I have so far intake 220 .564
exhaust 222 .568
lsa 114
the only thing that gets me is the icl intake center line I really have no idea what this is and need help the options go from 106-118
this is a street/ occasional strip daily driver and want to preform well on the street. any help is greatly needed/ appreciated!
So do you want mild or aggressive lobes, low or high lift?
Do you want it to idle as smooth as the stock cam, does it need to pass tail pipe emissions, or do you want a mild cam sound or heavy lope?
Where do you want the power gains, up top, down low ?
What's the compression ratio going to be with the new heads?
FYI, the more info you can give use about your wants/needs on how you want the engine to perform the better the chance you'll get what you really want.
How about the lobes mild or aggressive, low or high lift?
222/226 111lsa+3(108 ICL)
This cam will have a IVC of 39 and 2* overlap.
222/226 111lsa+3(108 ICL)
This cam will have a IVC of 39 and 2* overlap.
Last edited by 99Bluz28; Jan 25, 2014 at 09:24 PM.
FYI, I made a correction on the above specs. I meant to put 111lsa +3 with 2* overlap.
As far as lobes, I'd go with the 222 LXL(intake) and 226 XE(exhaust) on the TSP custom cam configurator.
As far as lobes, I'd go with the 222 LXL(intake) and 226 XE(exhaust) on the TSP custom cam configurator.
Last edited by 99Bluz28; Jan 25, 2014 at 09:32 PM.