Josh

iTrader: (9)

Hey Guys,

I'm about ready to pull the T-ReX in favor of something a bit more street-friendly, and after a good bit of research and fooling around in the cam spreadsheet, I've come up with an XE-R "lobed" 228/232 .588/.595 110 LSA on a 108 ICL.

My goal is to significantly increase torque and power in the mid-range and reach peak power at around 6300 RPM.

The cam will be spinning under stock 853 heads and enhanced with the normal array of bolt-ons, including a ported TB, LS6 intake, Hooker LTs, 3" Mufflex Y-Pipe, cutout, and March UD pulley. The power is sent to a Moser 12-bolt housing 3.90 gears, and, occasionally, I spray a 100-150 shot.

The valve events look like this (at .006, .05, and .200, respectively)...

If my calculations are correct, my DCR should be around 8.1:1.

Any input you all have to offer would be very much appreciated. I'd hate to spend the time and money to do this swap only to discover the cam in question works horribly.

Thanks,
Josh

matts22

iTrader: (2)

I'm no expert, this is just an observation and kind of a question...but if you are going to spray NOS, don't you want a higher LSA? Not that many people run 110 on an LS1, that's why I'm wondering.

99blancoSS

iTrader: (115)

I think your in the ballpark but if your peaking at 6300 rpm you could go with a 226/231 or so. Stock cubes?

cantdrv65

iTrader: (3)

Id go with a higher lsa and advance it more. 114 +4..... It will be better for the spray, not to mention improved idle. Honestly, its not going to make alot of difference though. You'll definitely liike the cam you have chosen over the trex for low-midrange.

BriancWS6

iTrader: (18)

I myself have been contemplating a custom grind. And it is along the lines of what your looking at, but slightly diff.

Here's what I thought of.....

228/232 .595/.600 112+4 on an XER grind.

orangeapeel

iTrader: (18)

Well as far as spray goes, it probably wont matter too much unless he is going with a big shot.

Patrick G

iTrader: (14)

You said it right...you are no expert. The 110LSA cam will meet his goals NA and will work great on the spray. Some of you guys focus too much on LSAs and don't look at where the valve events are happening. The 228/232 110LSA +2 cam has excellent valve events for giving high dynamic compression along with good street manners and good peak power. It will rip NA and on the gas.

PS, don't open it up to 112LSA. Go with your first choice, it will be better. Advancing cams too far is the devil.

cenTX-LS1

iTrader: (1)

This cam is exactly what I am looking for. Patrick, how hard will this cam be to tune on a 110LSA? I wasn't really planning on switching over to SD.

Ragtop 99

iTrader: (7)

I like it and I am surprised that no one seems to be running it. I tried get to get Patrick to put it in his car when he started looking for more torque.

Patrick G

iTrader: (14)

There's only 10 degrees of overlap in that cam. That's not much more than an F-13 cam on a 112 and certainly less than a G5X-3 on a 112LSA. Easy to tune!

SideStep

gollum

iTrader: (1)

Most of us understand intake timing and DCR. But could someone explain exhaust timing? What dictates how much exhaust timing is needed?

SUTTERERMAN85

iTrader: (42)

well i am running the g5x1 which is close to what you are wanting to run 228/232 .588/.574 112+4 i wish i had gotten it on a 110 though. i really like this cam and its nice to drive everyday. good midrange power and still screams up top. yours should be more of a torque machine though good luck

gollum

iTrader: (1)

Look at this Crane grind. I assume the 117 lc exhaust timing is for a defficient exhaust (stock exhaust port, mufflers/cats) and a tighter lsa version would be for a more efficient exhaust (efficient exhaust port, headers, strait pipe).
http://www.cranecams.com/index.php?s...01&lvl=2&prt=5

Spinmonster

I have never seen any cam not yeild 100hp from a 100 shot. Where you want the power varies.

Ragtop 99

iTrader: (7)

That cam is on a tight LSA. The specs work out to 228/232 112 LSA 107 ICL. The high ICL is a direct function of the 5* advance ground into the cam.

you can use a tight LSA on a restricted exhaust. The key to a restricted exhaust is to compensate with extra duration and keep the overlap reasonable. A free flowing exhaust allows for the use of more overlap.

cenTX-LS1

iTrader: (1)

Is there any particular reason that there is more lift on the exhaust side of this chosen grind?

Ragtop 99

iTrader: (7)

The extra lift is just a by product of the lobes. As duration increases the lift increases a bit.

Nice thing about buying from Thunder is you a get cam doctor report in addition to your cam card.

Josh

iTrader: (9)

Thanks so much for all of the helpful input, guys. I believe I'll give Comp a call within the next few days to get this ground.

My hope is to get a fresh dyno with the T-ReX (I don't have any numbers since the SD tune and 12-bolt), then swap the cam and see how the graphs compare.

Thanks Again!

Josh

matts22

iTrader: (2)

Thanks for clearing that up