That's simply the low-lift version of the cam you have picked out. Since you are doing a stall I'd suggest you stay with the high-lift version. It will allow more room to grow with future mods if you decide to go that route, and Lord knows most of us end up doing that route!

I could have bought a small car with the amount of money I've sunk into my truck. But I love it every time I get behind the wheel and turn the key; it's also here to stay so I'll be enjoying it for LONG time.

 

Looks like you going to set up a nice Av, if you like come over and check up on my Site www.NortheastAvalanches.com so when we have GTG's (get togethers), you can pick up some more Ideas.were always happy to display and help and are many members here on this site.
Keep up the great work. #7

 

Interesting, I thought that the 05 fans were what the Avy's came with stock since 05, guess only the trucks got them? Haven't heard of any issues either, I've been running them for a few years, but then again my truck isn't as heavy as an Avy...if anything I'd think that the 05 fans would move more air than the FAL's, but that's just a guess, plus you get the added cooling of the larger radiator. You have to go with what you're most comfortable with though...I'd definitely have the fans controlled by the PCM though, very easy to do and no worries about the FAL temp probe burning up, which I've heard of numerous times.

 

You are correct that Av's have come with factory e-fans since 2005. The FAL fans move more air at 5500 cfm than the GM e-fans (at least from the numbers that I've seen). I've had the FAL's on my truck, running the redesigned VSC, since sometime in 2004 with no issues. I believe installation has quite a bit to do with the VSC's burning up. My connections are soldered and I used oversize wire to help assure the current would not overheat anything.

 

I've only heard positive reviews, never one thing bad.

Are you saying that the FAL fans, on hi, are rated at 5500cfm? Where did you find numbers on the GM fans? What is the rating? I've never seen anything.

 

Yes, the FALs run 5500 cfm with both fans on high. I don't remember where I saw the numbers for the GM e-fans and I can't find anything in a current search either. I do remember that they were pretty close to the FAL cfms.

 

Sorry about the negative tone for the 05 efans. I'm not saying that they couldn't work because I know they will with the Nelson harness. However, I've read a lot about them not working so smooth on the AV. There is a lot of draw on the alternator from them when they initially turn on is what I've read and I'd need to upgrade my alt. if this happens. And the FAL's don't draw as much on startup (I think they start at 60% or so), so the draw from the alt isn't as bad. I'm not looking to upgrade the alternator at this time, so I'd just rather go with the FAL and be done with it, even if they are more money.

 

It's all good, doesn't sound like a negative tone...we're all here to share information so if you know something we don't, please post it up It's true that the 05 fans hit the electrical system pretty hard, I can vouch for that. I remember hearing that FAL offered some sort of soft start controller...I wonder if it could be adopted to work with the 05 fans? Pretty much any electric fan will cause a big amp draw on the electrical system on start up, that's the nature of the electric motors, but if one can find a way to progressively ramp them up (from a sort of controller), that would cure the problem.

I've seen pics of the FAL's, there used to be some floating around here...the obviously don't look stock, but they are quality looking units from what I remember.

 

WELCOME! Agreed about never hearing anyting negative...I've been running GM Efans for about 3yrs and I wudnt do it again. Honestly not worth the cash or effort to save small HP. Relays still burn occassionally, had the harness redone with heavier guage and soldered contacts and its still tempermental. Besides, clutch fans go off @ WOT and frankly dare anyone to tell the SOTP difference in power without a clock!
As for gears, dont forget if u change the rear u have to change the fronts too!
Sounds like you have a good start tho!!!! Depending what ur goals are I'd spend time and money on BRAKES, SWAYS then PANHARD, TRAILING ARMS and SHOCKS in that order - even before more power, altho that assumes ur not jonesing for the strip.

 

Hi dhpro- thank you for your response.

So are you suggesting that I hold off on the efans? for now?
BTW- your issues are the ones I've read about with them. I guess the Av can't handle the amp draws from those efans on startup?

And the suspension has already been addressed
All Moog parts up front, Hotchkiss sway bars, and trailing arms on order, new shocks, and brakes were just done AGAIN about a month ago- I seized up a caliper and cracked the pad up front.

After giving it some thought, I think I may do the 4.10 Trutrac gears- front and rear

Thanks again.