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112LSA vs 114LSA????

This is a discussion on 112LSA vs 114LSA???? within the General Help forums, part of the LSx Technical Help Section category; I dont know whitch to chose?! I would want the 112 for the badass choppy sound, but ive heard with ...

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    112LSA vs 114LSA????

    I dont know whitch to chose?! I would want the 112 for the badass choppy sound, but ive heard with the 114LSA i could wait a little longer before i must get a tune??

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    Member TRANS-DAD's Avatar
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    What cam specs. ??

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    If im not mistaken I think the 112 will make a lil more more than the 114, but I could be wrong
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    I think the power curve of the 112 will favor a higher RPM than the 114.

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    Member blk_jaws's Avatar
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    Quote Originally Posted by mbrownin View Post
    I think the power curve of the 112 will favor a higher RPM than the 114.
    the 112's power will start lower in the rpm's than the 114 i believe, not for sure though

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    Maybe I got it backwards.

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    you could be right and I could be backwards, but like I said Im not real sure

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    lower the LSA, the power hits higher in the RPM range.

    We had a nitrous drag car that started up and idled like a stock car ('cos of a high LSA) but had some crazy lobes/lift (solid roller setup) but ran like a raped ape with the nitrous

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    Hmm i always thought the lower lsa, the more broad the powerband was. Like a certain cam with 114 will start its power at say 3000rpm but that same cam with a 112 lsa will start making power at 2500rpm and both may pull to the same rpm?? Ive also taken lower lsa cams to produce more power down low in the powerband.
    Last edited by Ryans99LS1; 11-12-2008 at 08:21 AM.

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    Quote Originally Posted by Ryans99LS1 View Post
    Hmm i always thought the lower lsa, the more broad the powerband was. Like a certain cam with 114 will start its power at say 3000rpm but that same cam with a 112 lsa will start making power at 2500rpm and both may pull to the same rpm?? Ive also taken lower lsa cams to produce more power down low in the powerband.
    Thats what I was thinkin, my cam has a 114lsa and it dont seem to kick in until up in the rpm's

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    http://www.ls1lt1.com/forum/showthread.php?t=540

    Found a nice site on how cams work...it plainly states that the higher the duration higher RPM powerband....it also has a link to 112 vs two 114s

    The Blue is 112LSA, the other two are 114

    But why would i need to tune it if it was 112LSA and i could wait to tune if it was 114?? Because the lower powerband change as opposed of the higher band or what?/ I dont understand what thats why im told
    Last edited by NightRiderZ; 11-12-2008 at 09:27 AM.

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    Quote Originally Posted by NightRiderZ View Post
    http://www.ls1lt1.com/forum/showthread.php?t=540

    Found a nice site on how cams work...it plainly states that the higher the duration higher RPM powerband....it also has a link to 112 vs two 114s

    The Blue is 112LSA, the other two are 114

    But why would i need to tune it if it was 112LSA and i could wait to tune if it was 114?? Because the lower powerband change as opposed of the higher band or what?/ I dont understand what thats why im told
    Lower LSA gives more overlap (remember it's when BOTH valves are open together) ... pushing the power band higher.

    Don't mix up the words Duration (how long it takes from the cam to start opening to when it seats), Overlap (when BOTH valve are open together) and LSA (degrees between the intake and exhaust lobes). You can have two cams with the "same" LSA and lift/etc. but have different Overlaps due to the cam profile. Take two cams with similar cam profiles/lift and change only the LSA ... the lower LSA will make the overlap longer ('cos while exhaust is closing, the intake opens earlier), pushing the power band higher while losing some torque down below.
    Last edited by Mean Green Z28; 11-12-2008 at 09:54 AM.

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    Member TRANS-DAD's Avatar
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    Wrong, two cam's of same lift & duration one ground w/112 c/l and one ground w114 c/l ----------- the 112 will make more power down low
    but will idle less smooth,have less vacume, and will have more raw fuel smell at idle w/no cats!!!

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    Quote Originally Posted by TRANS-DAD View Post
    Wrong, two cam's of same lift & duration one ground w/112 c/l and one ground w114 c/l ----------- the 112 will make more power down low
    but will idle less smooth,have less vacume, and will have more raw fuel smell at idle w/no cats!!!
    Post #2 on that thread quoted above says the opposite of what you say, but the graph show's what you say. what's C/L that you mention? I'm talking LSA, you referring to the same thing in different jargon?

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    Quote Originally Posted by That Guy 2-1 View Post
    Post #2 on that thread quoted above says the opposite of what you say, but the graph show's what you say. what's C/L that you mention? I'm talking LSA, you referring to the same thing in different jargon?

    Yeah seems you guys were backwards...Higher Duration (all other specs the same) you have a higher power band...and lower = lower and so on with the LSA if everything else is equal (what Trans said)

    I wouldnt think if i got a 112LSA over a 114LSA it would be any more harmful to my car without a tune for a couple weeks huh??
    Last edited by NightRiderZ; 11-12-2008 at 04:38 PM.

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    i have a TR224 on 114lsa and it chops pretty good compared to some other 114lsa's ive heard, definately sounds near a 112. very streetable.

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    Yeah i just didnt understand why that one guy from another thread was telling me it was CRUCIAL that i get a tune ASAP if i had the 112 as opposed to the 114 (as if the 114 would be less "damageable") I wouldnt think my car would be damaged if i drove it a couple weeks or so without a tune with the cam, headers, stall, lid, tb bypass as it would be a waste to get a tune 3 weeks before i did some more internal work and needed another....

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    Quote Originally Posted by TRANS-DAD View Post
    Wrong, two cam's of same lift & duration one ground w/112 c/l and one ground w114 c/l ----------- the 112 will make more power down low
    but will idle less smooth,have less vacume, and will have more raw fuel smell at idle w/no cats!!!
    Thats what i was thinking and trying to say..

    Quote Originally Posted by NightRiderZ View Post
    Yeah i just didnt understand why that one guy from another thread was telling me it was CRUCIAL that i get a tune ASAP if i had the 112 as opposed to the 114 (as if the 114 would be less "damageable") I wouldnt think my car would be damaged if i drove it a couple weeks or so without a tune with the cam, headers, stall, lid, tb bypass as it would be a waste to get a tune 3 weeks before i did some more internal work and needed another....
    What they mean is the cars stock tune will handle 114lsa cam somewhat better. Your car wont hurt any, but i wouldnt be ripping on the car cus mayyyybe the fuel wont be just right. You def wont see the full potential of any cam without a tune but many people do wait a little for a tune.

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    Member NoscamaroSS's Avatar
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    Its not that its crucial, but the 114 will idle better than the 112, and with being an auto the 112 will make it alot harder to keep running while in drive.

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    if the cams have the same lobes (duration and lift), the 112 will make more a little lower than the 114LSA and the 112 will have more overlap down low giving you more "sound", but the higher LSA typically helps driveability manners.

    Why anyone would want to swap cams and drive for a while without tuning is beyond me though; your car may not even start up and idle or may want to constantly stall while driving regardless of the LSA that you pick.

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