Mohammed

sorry for the repeated post..

I've decided to go with 224/224 cam ..

ls1howto.com

but i'm confused with LSA numbers 112,114 ...which one will be better for the mods I have?? : pacesetters lts,slp lm no cats ,ory, coming mods: ls6 intake,lid,msd wires,tr55 plugs.

does 6600rpm damage the engine or transmission ?

Joey7489

iTrader: (21)

First off,
The 114 will have a slight narrower power range. Lets say the specs are POWER BAND FROM 2200-6000. If you got the 112 it would be from 2000-6000. If you got the 114 it would probably be from 2300-6000. The 112 just kicks on faster. Also, depending on what size cam you get the 112 or 114 determines the idling of the car. The lower the number the more aggressive the idle. 112 will make your car choke a and stutter, however the 114 will be a bit less rough and make it idle a slight bit more aggresive than normal, depending on how big your cam is.

Is there a huge difference in POWER between the 112 and 114. NO
Is there a huge difference in HOW QUICK you get your power. YES
Is there a huge difference in IDLE. YES

Now,
Can 6600 hurt your engine? Yes it can. There is no need to go up to 6600 RPMS. The LS1 power band stops at about 5550 anyways. Its a V8, and its really not necessary to bring it over 6000 at all. If there is for some reason you just want it up there, I recommend getting new lifters, PRC double coiled valve springs, rockers and a new timing chain. You would have to get all of this if your doing a cam anyways.... As far as getting rockers and an oil pump..... the 01-02 ls1's had very strong Rockers and oil pumps, however the previous years werent quite as strong. If you plan on going higher than 6200 RPMS no matter what year you have I recommend getting a set of rockers, and a new oil pump as well.

If you have more questions PM me

Mohammed

what decides the rpm range ? 5550,6600..is it the dyno tuning ? or the camshaft itself ?

thanks for the info bro

eamador11

Get 114 if youll be spending more time on the street.

get 112 if its mostly track only.

dnm12

iTrader: (13)

114 here and happy

Bird-Of-Prey

iTrader: (23)

WOW! well first off you have that backwards. The 114 will have a more linear powerband from idle to redline. The 112 will ramp up to power quicker but also tapper off a little in the upper range. The 112 might seem a little faster becuse of the way the power comes on but if you look at some dyno graphs you will see that the power under the curve will be slightly flatter for the 114. The 114 will idle a little better also.

Factory rev limiter is set to 6200 rpm. If you decide to get a cam and take it higher you should have the rev limiter raised when you get it tuned. Also want to definaltey get some valve springs to compliment the cam. Comp 918's work very well with most cams at .600 and under. If going over 6600 rpm I would definatley advise that you get some ARP rod bolts also. Where did you get the 5550 number? If you are thinking 5250 that is the point where HP and TQ are always the same. It's how they are measured no matter how many cylinders or what engine. I don't know of any V8 or any engine period that doesn't or can't be made to make power over that rpm.

Joey7489

iTrader: (21)

Yes, you basically just said exactly what I said.. Thanks.
I said the 114 will idle a little better.
I also said the 112s power will come on a bit quicker
I was estimating the RPMs because I didnt feel like looking it up, but I knew it was well under 6000.
And I know you can have the rev limiter changed, I guess really depending on what cam you go with, but 6600 is in no means necessary.

Joey7489

iTrader: (21)

the camshaft it self determines the power range.. look at the specs for cams it will show you the power range for that particular cam

ArcticZ28

iTrader: (14)

Bottom line is that there won't be a huge difference between the 114 and 112. 114 will be slightly easier to tune and will idle smoother. You will have higher peak numbers with the 112 but if you're running on the street I'd suggest the 114 with lower peak numbers but a better "area under the curve". Again, each one will only have minor differences, but there are differences. Will you feel them? Maybe, maybe not.

Mohammed

well I'm spending more time on the street
thanks guys

PREDATOR-Z

I think you might want to do some more learning yourself.
You cannot just say 112 is like that and 114 is like this.
you have to look at the valve events of the cam to decide the way it will perform as well as the supporting parts being used.
the 224 112 will make more power than the same cam on a 114.

These are the VE's of a 112+4 (224/224)

0.050
224
224
112>LSA
108>ICL


4>IVO
40>IVC
48>EVO
-4>EVC
116>ECL
0>Overlap


This cam is exhaust biased and will peak at ~ 5900/6000 depending on intake used (stock compression). Power will carry till 6500, but shift points could be 6300/6400 or so. It all depends on what rpm gives you the most average HP between shifts. This is decided by dyno graph and track runs.
It has 0 overlap so tuning is not an isuue and can purr like a kitten. (I run 7* on mine A4 and it still purrs smoothly.)

This is the Ve's on 114+4 (224/224)

0.050
224
224
114>LSA
110>ICL


2>IVO
42>IVC
50>EVO
-6>EVC
118>ECL
-4>Overlap

This cam is still exhaust biased, peak at around 6200 rpm, with less tqr under the curve and a later trq peak (50 EVO)
It has -4* overlap so a smoother idle but a loss of up to (5>10 rwhp peak). Shift point will be higher to benefit from between shifts max average HP like 6600 rpm.

so if you ask me, A4 or not, with tuning 112+4 is the way to go

zain98

iTrader: (1)

will a lobe change from comp XE to XE-R's make a differance in the VE's?

cws T/A

iTrader: (3)

224 track only
come on its 346 cubic inch V8 . I 224' ed my 302 5.0 . I should have went with way larger duration .

PREDATOR-Z

no, it will make a change in lifts

DUSTYWS6

Does the thunder racing 224/224 have any advance ground into it or do you have to special order it if you want the advance?

J-Rod

Read the sticky up top

https://ls1tech.com/forums/generation-iii-internal-engine/327734-cam-guide.html