SuperSport4life

iTrader: (7)

Im planning on the Trex cam for my car and I have an 01 SS, peak power should be around high 6k to almost 7k I only have 22k on my car. Should I worry about changing them out?

quick346

iTrader: (4)

If that's on a 112 LSA, it'll fall off, requiring you to shift around 6600 anyway. If it's on a 114, I've seen them hold out to 7200rpm. So if you bought it and it holds out that long, use it. If you don't, then you should've gone 112 so it blows its wad earlier.
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I have to say b/s here. from 6600 to 7200 just from a 112 to a 114

please

I think you have it wrong the 112 will pull higher but have less low end


All i can say is no way 2 deg of LSA on the same cam will gain 600rpm to peak hp



also i have spun my 04 ls1 to 6800 at least a thousand time's with no problem's

SuperSport4life

iTrader: (7)

110 lsa

N4cer

iTrader: (11)

Wow what's up with the wannabe tough attitude?
You have to say BS? It happened. There's no BS about it. Not sure why you think that you're so important that I'd lie or that your word will change anything that I've seen happen. With the X3 cams, what I've seen is the wider LSA flattens out the powerband on BOTH ends, and the narrower LSA makes it peakier, but the falloff is at a lower RPM. No BS to it bud.

Benny Blanco

The 112 will pull Higher and has LESS LOW END!!! Here we go again N4cer at his BEST ..............BB........................SV TKILR NORCAL

N4cer

iTrader: (11)

Dude, you guys have misunderstood this. When you read that it makes it peakier, that doesn't mean at a higher rpm. Sorry but you BOYS are talking theory, and I'm talking practice. Real world results. Get over it. No reason for attitude.

And Benny Blanco, all you do is run your mouth. If you had half the ***** you claim to, you'd fly here to Kentucky and do something about it. Otherwise shut up because you look like a scared little child.

quick346

iTrader: (4)

maybe one too many last night but i still don't see that 600 rpm peak diff.

sorry about bein a *** but sometime's after a bad day at work the take's over

mike

N4cer

iTrader: (11)

It's cool man. I totally understand.
Every one of them won't carry out as long. I said I've seen. Not all will. I'll comfortably say that 300-400rpm carry out as the norm between these grinds. The 600 was an oddity, and it floated the valves before falling low enough to need to shift. But ON the X3 cams, the 2* has consistently made that big a difference in this location (altitude and climate).

hammertime

iTrader: (1)

And what you're saying is the way it works in theory too. No need for anyone to be up in arms about it.

A G5X3 on a 112 is a 234* lobe on a 108* Intake Centerline. Any of the popular DCR calculators will show you that it closes the Intake Valve at 45* ABDC. Also, that cam has a 242* exhaust lobe, and therefore 14* of overlap.

However, when ground on a 114, the IVC gets pushed back to 47* ABDC, pushing the power peak rpm higher (but not necessarily the actual HP). It also gives up 4* overlap with the 2* wider split, so that's why some parts of the curve are softer.

Tighter LSA's tend to focus the power in a shorter powerband, while wider LSA's tend to spread it out over a greater area, but with less intensity.

N4cer

iTrader: (11)

Thanks, man. I thought I wasn't losing my mind, but you know how it gets sometimes. All the info flying and people just repeating what they hear gets to where it's hard to tell what's what. Buncha good guys here. It's all good.

I actually put up a drawing one time of a basic difference in the graphs. Here it is again:

hammertime

iTrader: (1)

The drawing is a good visual. It also helps one to uderstand why you would feel comfortable shifting that 114 cam som much later, as the peak comes and goes more smoothly, without the sharper drop of a tighter LSA.