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Cam explanation

This is a discussion on Cam explanation within the Internal Engine forums, part of the LSx Technical Help Section category; Hey guys, I want to do a cam but I want to know what I'm getting before I order it. ...

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    Member Goldcuffs's Avatar
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    Cam explanation

    Hey guys, I want to do a cam but I want to know what I'm getting before I order it. I've read through the posts so I have 3 or 4 good cams picked out but I still don't know how much bigger one is from another.(Besides lift of course) My question is at what point does the duration become so much that the engine starts to have a choppy idle? I am leaning toward the TR224. 224/224 .563/.563 114 LSA. Also from what I have read the 114 versus the 112 with improve idle quality with the sacrifice of so low end power right?

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    Member Goldcuffs's Avatar
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    Oh, and my mods as of now are: SLP lid,K&N,shorty headers,cat-back,and a Racetronix pump . Before the cam I will have a CATTED Y pipe and an intake. Then of course a tune.

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    Make real real sure Johns00Z28's Avatar
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    So you want a choppy idle or no?

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    ive heard about 230 duration is around the most for streetability, but everyone says something different. some of it depends on the tune too. 114 does have a smoother idle than 112. i dont know about the change in power. someone that knows will post more info. im just going off what i heard. my 228 232 with 114LSA doesnt idle too bad and i havent had it tuned yet.

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    Member Goldcuffs's Avatar
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    Quote Originally Posted by Johns00Z28 View Post
    So you want a choppy idle or no?
    NO choppy idle

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    I was gonna suggest the El Torro cam but since you don't want any chop then you'll probably want to go with the 114lsa you mentioned above although I'd get at least a 228R.

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    cutting and welding mark21742's Avatar
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    I'm running a 224 112lsa, slightly choppy idle more with more power all across the board.
    if I had to do it again I'd go and reckomend a 228. to keep a smooth idle you'll want 114lsa like said above, or even go upto a 116lsa

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    cutting and welding mark21742's Avatar
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    Quote Originally Posted by Johns00Z28 View Post
    I was gonna suggest the El Torro cam but since you don't want any chop then you'll probably want to go with the 114lsa you mentioned above although I'd get at least a 228R.
    I hope we make it out to test and tune on thr same day. I really want to hear your new cam!

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    Quote Originally Posted by mark21742 View Post
    I'm running a 224 112lsa, slightly choppy idle more with more power all across the board.
    if I had to do it again I'd go and reckomend a 228. to keep a smooth idle you'll want 114lsa like said above, or even go upto a 116lsa
    Isn't the 228 bigger than the 224? Wouldn't that give a choppier idle? Or with the 114 LSA would it be the same or better?

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    228 on a 114 on a cold start through an open cutout


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    Senior Member 01ws6er's Avatar
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    Tighter LSA will move your powerband down slightly. As far as duration affecting lift, it's the lobes which the cam are ground on that will cause some cams with equal duration to have different lift. The ramp rate of some lobes are greater than others and will yield higher lift at the same duration.

    There used to be an awesome sticky on Ls1tech, but good luck finding it with the search

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    Quote Originally Posted by 0rion View Post
    228 on a 114 on a cold start through an open cutout

    Thanks, that helps a lot.

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    what really give cams a choppy idle is the lsa....you loose torque/low end when you have large amounts of overlap ...228 114lsa my friend is right for you.

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    Senior Member 01ws6er's Avatar
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    Quote Originally Posted by shady milkman View Post
    what really give cams a choppy idle is the lsa....you loose torque/low end when you have large amounts of overlap ...228 114lsa my friend is right for you.
    Yes, thighter lsa gives a choppy idle and will improve mid to high range (not low end) as I stated before

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    King 0f n00bz shady milkman's Avatar
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    Quote Originally Posted by 01ws6er View Post
    Yes, thighter lsa gives a choppy idle and will improve mid to high range (not low end) as I stated before
    i know bud..relax i was refering to his comment about a bigger cam 224 to 228 being more choppy

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    LS1 or bust b.lee's Avatar
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    Check out this 230/230



    I also need help deciding on a cam, except I would like a choppy idle.
    (The car is pretty much stock and I plan on adding longtubes at the same time)
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    Quote Originally Posted by b.lee View Post
    Check out this 230/230



    I also need help deciding on a cam, except I would like a choppy idle.
    (The car is pretty much stock and I plan on adding longtubes at the same time)
    who was the guy on the camera?? Did he do a cartwheel or something as the guy went by him? Then blamed it on the camera.

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    LS1 or bust b.lee's Avatar
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    Ya, I don't know the guy... but i know he has problems operating a video camera!

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    Quote Originally Posted by 0rion View Post
    who was the guy on the camera?? Did he do a cartwheel or something as the guy went by him? Then blamed it on the camera.
    I have that cam but my car is an m6 and full weight so I'll be much slower
    01' Ws6: Bolt ons, TD's, stock 241 heads, 230/230 .612/.592 111+2

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    Quote Originally Posted by 01ws6er View Post
    I have that cam but my car is an m6 and full weight so I'll be much slower
    My car put down 391rwhp through an unlocked converter and a 12 bolt w/ 3:73 gears with that cam.

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