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Old 11-08-2010, 07:51 PM   #1
woodside783
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amf lifters?

what do you guys with the l99 about these lifters? Going to take them out when i do a cam swap but there is a cam made for the amf lifters just wanted some feed back
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Old 11-08-2010, 08:03 PM   #2
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everyone but a couple of shops will advise deleting dod/vvt and afm. Even if you change they afm lifters out and use vvt cam most shops will still say scrap it its no good. LS3 conversion is your best bet to get good lifters and all new valvtrain components minus rockers
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Old 11-08-2010, 09:16 PM   #3
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TSP has a line of cams for the AFM cams.
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Old 11-08-2010, 09:25 PM   #4
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Quote:
Originally Posted by jsharp View Post
everyone but a couple of shops will advise deleting dod/vvt and afm. Even if you change they afm lifters out and use vvt cam most shops will still say scrap it its no good. LS3 conversion is your best bet to get good lifters and all new valvtrain components minus rockers
Respectfully disagree... DOD is a definite delete BUT many shops are keeping VVT...

only if you don't change out the lifters are you iimited in cam selections... Put in the LS7 lifters and keep VVT and you have the best of both worlds...
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Old 11-08-2010, 10:50 PM   #5
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ADM performance removed mine when I had my conversion done. I am honestly glad mine are gone that Dam Lifter tick isnt there anymore like it was before when those AFM lifters were there.
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Old 11-09-2010, 01:15 AM   #6
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Take those POS AFM lifters out for sure. It will be up to you if you want to keep VVT for more power than the traditional cam but either way remove the AFM all together and make it VVT only or leave some power on the table and just convert to tradition LS3.
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Old 11-09-2010, 05:59 AM   #7
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vvt is coming around but still most of the shops on here will say get rid of it minua a few. Just saying. I wasnt saying its not good but alot of shops dont know how to use it yet.
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Old 11-09-2010, 06:57 AM   #8
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i am keeping the vvt. I want the tsp vvt cam and just wanted to know if it would be worth the money to have the head pulled of and put in the new lifters. Thanks for the feed back
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Old 11-09-2010, 07:30 AM   #9
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vvt is coming around but still most of the shops on here will say get rid of it minua a few. Just saying. I wasnt saying its not good but alot of shops dont know how to use it yet.
If they say that... then I wouldn't trust them to work on my car period...

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i am keeping the vvt. I want the tsp vvt cam and just wanted to know if it would be worth the money to have the head pulled of and put in the new lifters. Thanks for the feed back
Keeping VVT and replacing the lifters are two different things...
If you leave the stock lifters in then you will want to go with a TSP or Mast VVT cam which will be on the mild side and lifter friendly.

Keep VVT and replace the lifters and you can go much more aggressive.

Check out the Torque Convertor threads while you are at it. Best bang for the buck... but you'll need some sticky tires...
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Old 11-09-2010, 08:16 AM   #10
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So you wouldnt trust adm,lgmotorsports,livernois, or jannetty racing. I didnt say they wouldnt do it but they all have preference for no vvt. I have talked with all of them personally and that is what they told me about a cam.
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Old 11-09-2010, 08:36 AM   #11
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If I'm not mistaken adm,lgmotorsports, and ivernois all make their own camshafts so of course they are going to say their cam is better and tell you take VVT out. I've seen at least two different engine dyno comparisons of VVT vs non-VVT cams and VVT cams made more power across the board. The reason these shops you spoke to recommend to take out VVT is because they have not invested R&D into developing a VVT cam and they want to sell you their stuff. It is not because non-VVT is better...that much I can guarantee.
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Old 11-09-2010, 08:43 AM   #12
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and that is what I said in my first post I never said vvt was good better or the best I said most of those shops will tell you otherwise. I agree they have their own things they do which I also stated in another thread. Actually for power the vvt cam is better price and you can opt for afm delete lifters and have the best of both worlds. So that being said I was just stating what most of the bigger shops on the site would prob say so that way they wouldnt make op feel like its not a good thing.
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Old 11-09-2010, 09:41 AM   #13
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Pretty sure I'd have to hear this directly from the shops you listed as they are all top notch. Bottom line is the choice is yours and you got my opinion...

BTW we have one or two big shops here in Houston that I have discussed this with. One of which says they always recommend keeping VVT.
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Old 11-09-2010, 09:51 AM   #14
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whos the shop? I would like to call them as well. I like the idea of vvt. You can look their numbers up and call them and they will tell you like they did me they can do whatever you want but prefer DOD/vvt delete. Trust me I have spoken with all of them several times on the phone. If they would have been ok and in favor of vvt then I would have jumped on it as it is cheaper for the same power. I would liek to call the shop you spoke with and get a qoute.
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Old 11-09-2010, 09:52 AM   #15
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oh and thanks for your opinion the more the better. Lets make VVT the next big thing.
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Old 11-09-2010, 10:19 AM   #16
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whos the shop? I would like to call them as well. I like the idea of vvt. You can look their numbers up and call them and they will tell you like they did me they can do whatever you want but prefer DOD/vvt delete. Trust me I have spoken with all of them several times on the phone. If they would have been ok and in favor of vvt then I would have jumped on it as it is cheaper for the same power. I would liek to call the shop you spoke with and get a qoute.
You TOTALLY missed the point... I'm not talking about the cheap route of leaving the lifters in. And yes ALL these shops will advise you to remove the crappy AFM lifters...

I'm saying swap the lifters and keep VVT best of both worlds... I'll give you a few shops... Fastlane (the one I was talking about), G-Force, LMR, ARD... I've spoken to all of them on the subject.
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Old 11-09-2010, 11:55 AM   #17
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no I didnt miss the point I mean there are shops that do it both ways retaining lifters and swapping with either LS3 or most commonly it seems Ls7. These most commonly referred to as VVT with afm delete builds around 2500. I am with you I promise. Thanks I need to look into some more the thing that scares me is the guys at texas speed say that tuning of the cam is really done by then as they give the numbers needed for "phasers". But the overall tune of ecm and tcm is on the tune so I want to go to someone good.
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Old 11-09-2010, 12:26 PM   #18
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everyone but a couple of shops will advise deleting dod/vvt and afm. Even if you change they afm lifters out and use vvt cam most shops will still say scrap it its no good. LS3 conversion is your best bet to get good lifters and all new valvtrain components minus rockers
You're finally getting it... back in post 2 it was a different story...
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Old 11-09-2010, 12:35 PM   #19
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No I was still getting it I was just saying alot of the shops dont support vvt cams. They say do the conversion. I think we were just saying the same thing just starting on different ends of the conversation and finally met in the middle lol. I am not good at wording things on forum so I may have written it to where it didnt get the point across.
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Old 11-09-2010, 12:45 PM   #20
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just to put in my 2 cents, you named some companies that advised you to do the vvt delete. maybe they did that so they could keep your business since they only sell non-vvt cams. would be bad marketing to promote something they don't sell and not developing.
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Old 11-09-2010, 01:15 PM   #21
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what are AFM lifters? I know what the VVT cams are and the DOD but am lost about the lifters. C an you tell me why they are no good and what to replace them with. They are a roller lifter am I right about that? thanks
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Old 11-09-2010, 01:28 PM   #22
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thanks guys i am going to have the amf lifter taken out when i do the cam swap
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Old 11-09-2010, 01:52 PM   #23
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what are AFM lifters? I know what the VVT cams are and the DOD but am lost about the lifters. C an you tell me why they are no good and what to replace them with. They are a roller lifter am I right about that? thanks
AFM (Active Fuel Management) and DoD (Displacement on Demand) are the same thing, just different names. On the L99, half the lifters are different and can be turned off for better fuel economy. I had my lifters replaced when getting a new cam and supercharger. Also changed out the timing gear to 3-bolt, pushrods, retainers and got dual-springs. See signature below for all my mods.
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Old 11-09-2010, 02:31 PM   #24
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No I was still getting it I was just saying alot of the shops dont support vvt cams. They say do the conversion. I think we were just saying the same thing just starting on different ends of the conversation and finally met in the middle lol. I am not good at wording things on forum so I may have written it to where it didnt get the point across.
Yeah.. we're just wording it differently...

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thanks guys i am going to have the amf lifter taken out when i do the cam swap
Good deal... The extra money spent to replace lifters will be your ticket in the long run... These lifters are the weak point even with the stock cam...
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Old 11-09-2010, 03:48 PM   #25
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actually talking to lmr about those lifters as we speak. They qouted me but left stock lifters in for the build. I want their outlook on it. I also am not sure yet if their cam is vvt or not
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