99'FRC
I decided a couple months back I wanted to start daily driving this car and now it's that time to make some HP. I'm taking off work Friday to start the project of hopefully making 400rw as a daily driver with a simple combo.. I am still torn on my decision of which cam to choose.

G5x2- 232/240 .595/.608 with choice of 112/114 lsa..
G5x3- 234/242 .600/.610 with choice of 112/114 lsa..

The car currently has an air intake, B&B Prt Catback, and 160 Tstat. When I pick the cam up, I will also be coming home with LG Pro Long Tubes w/x-pipe and probably with no cats since (the LT's come with off-road X), those can always be picked up at a later date.

With either cam choice, I was going to go with the Comp 921 Duel Valve springs, along with the other internals that go with it. The car will be dyno tuned with LS1 edit following the weekend install.

As I said earlier, I will be driving this car for all driving duties and as of now, plan on leaving the 3.42's in. I also plan on leaving the LS1 intake in place for the time being since it would make more dollar since to replace with a FAST down the road if I decide to pick up a pair of heads later on.

I would like to take full advantage of my rpm band, especially under regular acceleration from idle to the 3000-4000k range (I know either one will be there from 4000K and on, and under WOT conditions). I would also like the car to have no issues holding idle and not want to fall on it's face. I also don't want it trying to stall when you suddenly take the car out of gear coming to a stop where it causes you to try and bump the throttle all while attempting to brake.

Sorry this is so long. I wanted to lay out all details so you guys didn't have to ask more questions about the situation before you could help me out with GOOD advice or experience. I would like to know the pros and cons to picking either cam and the lsa that should go with either one for my combo and the car usage. Also, any other advice that you think I would find usable about the rest of the combo that would be to my benefit. It also wouldn't be a bad thing if I could hear the cam make that lovely music it makes at idle...

Thanks again EVERYONE!! Been reading for a long time and now that I'm ready to do the work, I wanted to cover my *ss by hearing your thoughts, before I drop the cash and pick everything up in a couple days!!

 

I was in the same boat as you were a while back between the two cams and I chose the G5X3 on a 114 lsa. This is my daily driver and I have had no problems at all. I love the power. It made 401 RWHP and 378 RWTQ with the cam and boltons. You can actually feel it kick in at around 3,500 rpm. I would strongly reccommend this cam because I think if you get the smaller X2 cam you will be wishing that you would have gotten the bigger one.

Chris

 

No offense, but have you called and talked to the guys at LG about these cams and questions? Given both cams are made by LG I'm sure they can answer questions you may have...

 

there so many people buying off the shelf cams. why not get a custom grind with optimal valve events, SCR and DCR??? do it once and do it right. i think if people did there homework, everyone would have a custom camand make the most HP out of there combo

 

02blackbeauty19- Thanks for the reply and nice #'s.

nwdanner- Thanks for your reply too, but I can't say it provided much help.. I have been to LG many times (Dallas local), know the guys (including Mr. G himself), and have enough reason as to why I'm going with their parts. On the other hand, those boys have a job to do and that is to sell and promote their product just like any other shop or vendor.

With that said, I'm looking for feedback from the ocean instead of the pond. Sure, plenty of results are there for shops and others to talk about when new parts go on, but how is that car 6 months later, how does it really drive and behave after you have enough seat time, and pros and cons to all of it?? I would just prefer to receive as much information as I can before throwing around chunks of cash and what better place to look then going off just what a shop says.. I mean no offense either, but hopefully that makes sense..

 

From my personal experience, I'd go with X2. I think you'll have less tuning and idling issues vs the X3.

Others I'm sure will have different opinions.

If you can find the information to do it. I would also entertain the idea of calculating a custom grind cam as others have stated. You can then compare those numbers to LG's and see where they fall. The custom grind will probably also turn out to be cheaper than LG's.

In either case, I'd use the 921 springs for simple piece of mind.

 

how about the G5x1 cam? 114 lsa
"I would like to take full advantage of my rpm band, especially under regular acceleration from idle to the 3000-4000k range"
you really need to bump that compression up (DCR) to make power thru the entire rpm range.
Call LG and ask them for DCR numbers on all three cams with your setup. use the one with the highest number. You are using stock LS1 heads with the stock head gasket right? I think LG has some other cams not listed.
comp 921 springs are a good pick.
I am strongly leaning towards the custom cam for myself.

 

Hey, no biggie. Opinions are like rectums, everyone has one.

You said you want ~400rwhp and daily driveability. I realize you're probably on a budget here, but have you considered spending a little extra cash and doing heads at the same time? This would save you some future labor costs, allow you to go with a slightly milder cam while reaching your power goals, and retain perfect daily driveability. For example, AFR 205s and a 224/228@114 would put you in the 420rwhp+/- arena. Of course, money is the factor here.

What ever you choose, good luck! Oh, and post some sound clips when you get your car back.

 

Go with the X1 or X2 if you really want daily driver status. Others will tell you, that you CAN drive the X3 on the street, but realisitically anything over a 224/224 is starting to loose low end and get into tunability problems.

I have personally experienced a 224/224/114 cam on a stock LS1, then decided to go bigger and got the 234/234/112 and am wishing I stayed with the smaller cam for daily driver. It's true at 3500-4000 you can actually feel the larger cam "kick" in. It does leave the lower rpm band kind of soggy, with cam surging and bucking in the 1300-1600rpm range if you put it in 6th for cruising.

 

When I asked LG the same question years ago, he said G5X3, it is just overall a stronger cam than the G5X2, with no additional bad habits. That's what a couple of years of testing and evolution get you. If you want instant bottom end pull, which the G5X2 seemed to have, get the G5X3 on 112 lsa.

Call LG, they will set you down the right path for your goals.
There may be an even better cam available?

 

Hold steady,Save your money,DO IT RIGHT!