zdeckich

Hey guys im looking on doing the G5X3 cam package with LG within a month or so. And wanted to know what the difference is between the 112lsa and the 114lsa? I have a 02 Z06. It will have the LG Pro 1 3/4 headers catted, CAI, Borla catback and port and polished TB and stock heads. I also daily drive the car but only drive 10 miles round trip. Thanks for the help.

REDZED2

They (LG) can tune the 112 if you want more of a chop at idle. A bit more low end torque and a bit more tighter PTV but with stock 243's it won't be an issue. I say go for the 112. Oh might use a bit more fuel as well but the sound diff. will be decently noticeable in a good way!

zdeckich

Sorry im not trying to spund like a dummy but what is PTV? And thanks for the help.

TXGS507

Piston to valve clearance.... Often times w aftermarket heads, larger cams the pistons need to be fly cut for clearance. 114lsa is less choppier as wantbluc6 says.. The 112lsa is preferred for the manual cars and will sound awesome!

I ran the g5X3 in one of my previous Fbodies... Loved it, but be prepared to smell like fuel..

zdeckich

Ok cool makes sence now. And yea not to worried about the gas smell it will be worth it. Thanks again for yalls help. Cant wait to get it.

95vettski

IMHO...that cam is too big for a daily driver. It will buck or surge below 1600 rpms and as mentioned it will smell like fuel from the overlap. I would sacrifice the 5-10 hp for something more tame and it will still sound cammed and be much more joyful to drive...especially in traffic. Just my .02$

XotiK ZO6

I would go with the 114. Too many tradeoff's with the 112.

Sigforty

I have always used the 112 for manual cars. All the cam's I have had in my Z06 have been on a 112. The 114 is normally what folks use in the autos.

REDZED2

With a spot on tune it shouldn't. I'd run hi flo cats. Not into stinky. If you want exhaust stink you might as well run a 60's drag muscle car.

95vettski

The lsa is relative to the duration, you could have a small cam like a 214/220 on a 112 and it will drive great. The G5X3 is a big cam, I believe it's a 234/242 112 and even on a 114 it won't make that much of a difference. I would scale back the duration to something like a 226/234 for great street manners, but that is subjective.

Sigforty

You do not require cats to solve that problem. It is all in the tune with "end of injection timing." The factory cam has no overlap and sprays fuel onto a closed intake valve for evaporation. By changing injector timing for cams with overlap to when the exhaust valve is closed, there is no more raw fuel smell.

Russ K

You definitely need cats if you don't want an exhaust stink. No way to tune around missing cats. A 100% stock engine without cats will also stink.

A properly functioning catalytic convertor takes carbon monoxide (odorless) and unburned hydrocarbons and converts them to carbon dioxide and water. But the catalytic convertor also greatly reduces the nitrogen oxides, as this is what causes the eye watering stink. I have LG Long tube Pro headers with high flow cats. No reason to go without cats and make your exhaust stink like an old car.

Russ Kemp

Russ K

I have first hand experience with that cam. Mine was a 114 LSA 10* valve overlap. The light throttle/low rpm <1800 rpm, surge/buck/fishbite was very irritating. The 112 LSA with 14* valve overlap would be way worse. But both cams would drive OK with an auto trans with a 4000 stall.

When my 346 expired, I installed a TSP 418, re-used my TFS 215 heads with the cambers opened up to match the larger bore (11.5 CR), kept the 1.75 LG Headers, high flow cats & LG 3" mufflers and the Mamofied 90 mm Fast intake. And kept the 234/242 114 cam, but installed it at 114.

Well, the drive-ability was only slightly improved. So I installed an EPS/Cam Motion 234/242/117+2 cam (4* overlap). This cam drives 10x better, still has stupid bottom end power and has more mid range to top end power due to the earlier exhaust valve opening. I like driving my car again!

For your car, I would get a G5X1 228/232/.588/.574/114, as it would have 2* valve overlap, will drive close to stock, have more low to mid range power, and will have very little less peak HP compared to the G5X3.

Russ Kemp

zdeckich

Like i said i will be running cats for sure. And im not intrested in the G5X1, but i apperciate you input. Also why run 1 7/8 headers on a non boosted car?

zdeckich

How did drive in just normal city driving with the 112? When i was talking to the guys at LG they where telling me the 112 would be fine to drive in the city. Also it would be installed and tuned at LG.

Sigforty

A few of my friends had the LG G5x3 on a 112 and they drove just like my Futral F14 on a 112. I really did not notice any difference compared to when the car was stock. The car idled a little higher, had some more shake and loped. Otherwise it was great. I actually miss my old setup. My current setup is a 383 stroker with a 244/250 on a 112. It is a little more violent shaking, but I was still driving it daily until a two years ago. I started letting my 65 yr. old dad drive it. He had no trouble with it at all. Is there anything in particular you are worried about with the driveability?

zdeckich

No not really, just want to see how much difference it makes from a red light. didn't know if you really had to get the RPM's up just to keep it from bucking or surging bad from take off.

TXGS507

I ran the G5X2 in my previous 00 Firehawk... Made 430/405 to the wheels with a 3600 stall, bolt on's....... Not a whole lot of difference between it and the X3, slightly more tamed... as I said, I have ran both so I speak from experience.

Get with Bobby, Anthony up there @ LG.... They will steer you right.

as far as the bucking, surging... That will depend on tune... I am running a much bigger cam that the X3 in my stroker w over 650lift... There is Zero surge... slight bucking, but I am used to it....

REDZED2

Too many variables. This thread is like a tangled bundle of twine. I'd listen to Russ to some of his wise words. If you're hell bent on that cam maybe get the cam cut on a 113 sorta half and half . My 234/236 was on a 113 and same XER lobes. Exhaust duration doesn't affect idle, surging.. its the intake duration!.. and my cam didn't even sound that raunchy after tune. Just medium sounding.. No stink, drove like stock.. but then the 4.10's low down helped get the revs up quicker after the tune. It all depends on lots of other factors that can't be explained by myself.

racebum

need to pick your preference. a street car or a car that wakes up fast and can be a drag race monster.

more overlap generally drives worse but runs like a raped ape. on a more race oriented car i would use as much overlap as the pistons allow, 108-110 if it can be tuned

on a street car 114-115 all day