AFR Vs MTI heads
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Originally Posted by wallerss
I would definately be interesting in seeing a direct comparison stock vs afr, much like they have done in the past with their mustang project car. I think it would be great to dyno a car and then just bolt the 205's and see how it turns out. BTW its nice to see AFR throw their hat in the LS1 ring.
http://forums.corvetteforum.com/zerothread?id=819571
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#42
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Originally Posted by PREDATOR-Z
I used to have a 95 LT1 and I remember clearly the flop and misleading facts my swapping to AFR's had led to. I'm sceptic of the promised performance so beautifly embelished. And where in my response did I give any negative comments about the AFR's? Read again, I was just giving my views on a comparison basis. For the price difference MTI 2E is a better buy Vs "out of the box" AFR 205's. This is MY opinion and I'm entitled to it.
![Rolleyes](https://ls1tech.com/forums/images/smilies/LS1Tech/rolleyes.gif)
Originally Posted by PREDATOR-Z
1- 450rwhp with a 224/.581/112 has not been done with AFR's yet (As far as I know) When u said 224, u have to specify which.
2- AFR with G5X3 put down about 470 (On a Vette LS6, not an LS1). But that was not stock AFR's (11.4 CR). Off the shelf AFR are 66cc chambers and require a spring upgrade. So prices will be close to $2500.00
2- AFR with G5X3 put down about 470 (On a Vette LS6, not an LS1). But that was not stock AFR's (11.4 CR). Off the shelf AFR are 66cc chambers and require a spring upgrade. So prices will be close to $2500.00
Originally Posted by PREDATOR-Z
Again read again and you will see I said that I didn't think you had tested a 224/224, .581/.581 112lsa with AFR's and clearly as you stated you tested a 224/228. Now unless I'm in the Twilight Zone, these are two very different cams. That is why I also stated that SSCAM68 should specify what "224" he was talking about.
Originally Posted by PREDATOR-Z
I made no reference to that.And excuse me but a "bone stock LS1" does not have a 224/228, 90MM TB, lsx intake, Headers etc....
What poeple want (The other open eyed poeple) is a straight swap from stock LS1 motor to stock + AFR. No cams, no gimmics, no headers, nothing. 1 to 1 swap. regular heads VS AFR.
Then IMO we will see the whole truth and nothing but the truth. Just the way it is supposed to be. Do it on a 2001-2002 that way you can't blame the intake or the exhaust manifolds and guess what? Even the injectors will handle the max your heads can put on a STOCK LS1 engine.
What poeple want (The other open eyed poeple) is a straight swap from stock LS1 motor to stock + AFR. No cams, no gimmics, no headers, nothing. 1 to 1 swap. regular heads VS AFR.
Then IMO we will see the whole truth and nothing but the truth. Just the way it is supposed to be. Do it on a 2001-2002 that way you can't blame the intake or the exhaust manifolds and guess what? Even the injectors will handle the max your heads can put on a STOCK LS1 engine.
Originally Posted by PREDATOR-Z
Yes that's what I was referring to, and again read carefully I never mentionned your name or that you did the testing on the G5X3.So confusion is not an issue. And since when does a 66cc head get an 11:1 CR on a flat top slugged stock LS1? even with a Cometic gasket it would be around 10:2>10:3. So the AFR's tested on the 224/228 were NOT out of the box.
Originally Posted by PREDATOR-Z
That is what I said. $2249.00 (New price)+ $100.00+$80.00=$2429.00 (ie: Close to $2500.00
And I quote from your own site:
1250" OD HYDRAULIC VALVE SPRING WITH DAMPNER, 130 LBS ON SEAT, 0.581 MAX. LIFT #8017 (UPGRADES AVAILABLE)Why be conservative? Just say the truth or do you think we wouldn't understand? What other facts are being kept from your consumer?![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
And I quote from your own site:
1250" OD HYDRAULIC VALVE SPRING WITH DAMPNER, 130 LBS ON SEAT, 0.581 MAX. LIFT #8017 (UPGRADES AVAILABLE)Why be conservative? Just say the truth or do you think we wouldn't understand? What other facts are being kept from your consumer?
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
Here is the best part,
a quote from Tony Mamo
Originally Posted by Tony Mamo @ AFR
BUT....just to put all minds at rest, YES...AFR is currently installing Patriot "gold" dual springs as our "standard" valvespring . We are having springs custom made specifically for us, of very similar premium wire material, but the lead time for a run of custom springs is insane. We felt that of all the dual springs currently available, the Patriot spring (not manufactured by Patriot of course) was arguably one of the best springs we could have installed till our own production run is complete.
Originally Posted by PREDATOR-Z
GUYs, what matters here is Patriot "Gold" springs are one of the best.
https://ls1tech.com/forums/generation-iii-internal-engine/181422-afr-heads-have-patriot-gold-springs.html
Originally Posted by Predator-Z
WELCOME TO A FREE SPEECH FORUM, WHERE VIEWS ARE EXPRESSED, FACTS DISCUSSED, NUMBERS QUESTIONNED, MISTAKES CORRECTED, KNOWLEDGE IS GAINED, MARKETING WARS ARE FOUGHT, TROLLS ARE BASHED, IGNORANCE IS IRRADICATED, BLIND SEE THE LIGHT AND LSx MOTORS RULE
Last edited by sscam68; 06-16-2004 at 01:16 PM.
#43
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Originally Posted by sscam68
Again you make yourself look foolish, this has already been done by a magazine. See the link I posted above, it contains before and after numbers as well as in modified form, just like most peoples setups.
Do you even know what stock means?????????? and I'm the idiot just because I want a one to one comparison?
Show me one of my posts that says AFR is crap, they have no potential, they are no better than stock etc... You won't
Put a set of MTI 2E's on that same engine stated in that Corvette Forum and show me that they couldn't have the same or better or worse gain. You can't.
So where is my bullshit in saying that in my opinion as I see it, 2E's are a better buy judging the difference in prices.
and idiots like you spread nothing but bullshit
Yes master, forgive me master, sure master.
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This is all futile, you can treat me the way you like, I refuse to sink to name calling just to prove my views.
I made up my mind, others will make up theirs and points are only proven at the track.
Good luck to ALL, sponsors included.
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Originally Posted by sscam68
Easier said than done buddy!
Are you aware what its involved financially for hiring one person when it comes to a small buisness? I am not trying to get into a pissing contest, I am asking a legit question.
me when I found out--->![Barf](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_barf.gif)
![EEK !!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_eek2.gif)
me when I found out--->
![Barf](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_barf.gif)
I assume you own one? How many employees do you have working for you? What’s your profit margin? Do you have more work than you can handle? How would adding an employee(s) change your overhead and effect costs? Do you provide products and services or only products? Do you drop ship or keep inventory? Insurance costs? Etc. (I’m not actually asking you to answer those questions
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
But I think the typical member here envisions some of these businesses as having at least a dozen employees if not more. Then when we hear how busy they are all year round, the next logical question is, “wow, good for them but why don’t they hire more people so they can take in more work?”
The company I work for is a job-oriented company. We’re Engineers, Consultants and Construction Managers. We build two-piece and three-piece steel and aluminum can lines and also PET lines. Sometimes we go several months with little to no work and other times we have so much work we could have twice as many people and they would still all be busy. We just have to learn how to drink from the fire hose when that happens.
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
If all the vendors are so busy that they are able to ignore RFQ’s then that is 100% awesome for them because that means they are doing quite well for themselves! But if they rely on a steady flow of orders, especially ones that total in the $2,000 to $10,000 range, then it would be foolish to ignore those types of RFQ’s. How much time, really, does it take to send someone a quote, especially one that is probably often asked for (i.e. heads/cam including install and tuning)? The person requesting the quote is most likely going to buy from someone, why not convince him/her that someone is you?
Am I expecting too much? Do shop owners expect customers to just call and order and not seek pricing and technical information before making their decision?
![Huh](https://ls1tech.com/forums/images/smilies/LS1Tech/huh.gif)
(Yes, I do know a lot of the technical questions are answered right here at ls1tech.com but we, as buyers, owe it to ourselves to know who and what kind of person(s) we are giving our thousands of hard earned dollars to.)
If those are the kind of customers the shops are getting then I guess I don’t blame them. I mean, why spend 5 or 10 minutes emailing/talking to a guy/gal that may or may not buy when you can get the dummy at the door to buy right now with no questions asked? If this is the way it works then I can’t blame you but you also can’t blame me for not being one of those dummies.
I'm not a shop owner so they are allowed to do whatever they want
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#46
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Well said Pewter.
Showing interest in inquiries and feedback to questions has always been one of my decision factors in choosing a supplier.
Because in my mind if a shop does not take time to do so, what will happen if I have a problem after buying their product?
Showing interest in inquiries and feedback to questions has always been one of my decision factors in choosing a supplier.
Because in my mind if a shop does not take time to do so, what will happen if I have a problem after buying their product?
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Originally Posted by PewterZ28
I'm not a shop owner so they are allowed to do whatever they want
, it has no effect on me or my job. But bottom line is I’m going to buy some stage 2 heads from someone as well as a bigger cam, bigger injectors, bigger fuel pump, better flowing oil pump, a 12-bolt rear, and possibly the labor for all, including tuning and whatever else may be needed. It may not be all in one purchase but someone is going to get some or all of that order and it certainly won’t be given to a company that couldn’t even suggest a cam or send me a quote. ![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
![Nod](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_nod.gif)
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Boy has this one been hijacked...
![Angel](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_angel.gif)
However, at least it's professional by 99% of the posters...
Pewter...
I'll tell you this.... I work alone. I have a partner of sorts that works with me on various projects but to a great extent, it's ME here doing everything.
Why?
I did the "big speed shop" deal many years ago and it sucks. Overhead kills, insurance destroys, landlords are brutal, let's not forget the tax man... God bless those who can put up with all the BS that a larger business incurs...
Now, for your point on RFQ... This isn't a big market. Nothing like a tier one supplier nor an aftermarket manufacturer. It's a TOTALLY SPECIALIZED field and as such, a consumer has to depend predominanatly on referals and reputation. That's why good lawyers don't need those cheezey 30 second info-bites. They're good at their trade (no ambulance chaser comments please
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Apply the basics... If you TRUST one shop's opinion, their combinations and their results.. BUY FROM THEM...
Results and referals are the best form of advertizing! I know it works extremely well for me...
<hijack over>
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cool color... NOT!
Ed
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Originally Posted by PewterZ28
To an extent, yes I do. I am loosely involved with the financial decisions made at the company I work for. We have over 30 employees so I don’t know how that compares to some of the high performance automotive companies.
I assume you own one? How many employees do you have working for you? What’s your profit margin? Do you have more work than you can handle? How would adding an employee(s) change your overhead and effect costs? Do you provide products and services or only products? Do you drop ship or keep inventory? Insurance costs? Etc. (I’m not actually asking you to answer those questions
) I know there are a lot of questions for which you have to have good answers for in order to justify hiring additional help. It may not be the best answer for every shop. Maybe for some shops there is no way of getting around turning away customers whether it is over the phone, in person or by way of ignoring emails/phone calls/faxes.
I assume you own one? How many employees do you have working for you? What’s your profit margin? Do you have more work than you can handle? How would adding an employee(s) change your overhead and effect costs? Do you provide products and services or only products? Do you drop ship or keep inventory? Insurance costs? Etc. (I’m not actually asking you to answer those questions
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
![Icon Lol](https://ls1tech.com/forums/images/smilies2/icon_lol.gif)
In short there was no way in hell we could afford to hire someone JUST to answer emails, but that was our situation. I can't speak for a shop.
Originally Posted by PewterZ28
We just have to learn how to drink from the fire hose when that happens
If I was that serious about making a purchase, especially one involving thousands of dollars, I would make a phone call, but thats just me. You'll be taken much more seriously anyways.
BTW There is more involved that just paying someone $X.XX/hr to answer emails, and I think you know that
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
.02
Last edited by sscam68; 06-16-2004 at 03:37 PM.
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Ed, It's hard to read emotions over the internet so I can't really tell if you're implying I am being naive, unreasonable and my posts have been unprofessional or if you are simply trying to educate me on the harsh financial reality faced by even the highly successfull performance shops. If it is truly that difficult then I have sympathy for the shop owners/managers.
As for your other point, the reason I contacted the vendors I chose to email was because of the reputations they have here. It's not that I don't trust their opinion but rather I can not even get their opinion.
You’re right though, this thread has been hijacked. What were we talking about? J/K It wasn’t intentional and it looks like there are several hijackers on board. I've got wings though so I’ll jump off.
Sscam68, I agree it’s always better to talk to a person but I prefer to first establish contact via email. That way I can give them all the details in writing as well as state my questions in writing. There is less of a chance of forgetting an important question and having to call back again.
Also, the receiver of the email can always go back to the email and reread it to double check on the facts. No chance of a “oh, I thought you said you had a manual transmission” or “I thought you said you had a 2000 Z28.” Not that it would happen but rather that it could happen. The first email gets the facts out. The replying email shows the interest and probably answers the basic questions. From there the phone calls can get into the micro aspects of the questions and hopefully set up the appointment and/or the purchase.
You have to agree with me on this to at least an extent, we’re all here typing aren’t we?
Just look at how much the function is used.
Derrick
As for your other point, the reason I contacted the vendors I chose to email was because of the reputations they have here. It's not that I don't trust their opinion but rather I can not even get their opinion.
You’re right though, this thread has been hijacked. What were we talking about? J/K It wasn’t intentional and it looks like there are several hijackers on board. I've got wings though so I’ll jump off.
![Angel](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_angel.gif)
Sscam68, I agree it’s always better to talk to a person but I prefer to first establish contact via email. That way I can give them all the details in writing as well as state my questions in writing. There is less of a chance of forgetting an important question and having to call back again.
Also, the receiver of the email can always go back to the email and reread it to double check on the facts. No chance of a “oh, I thought you said you had a manual transmission” or “I thought you said you had a 2000 Z28.” Not that it would happen but rather that it could happen. The first email gets the facts out. The replying email shows the interest and probably answers the basic questions. From there the phone calls can get into the micro aspects of the questions and hopefully set up the appointment and/or the purchase.
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
QUOTE
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)
Derrick
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Last edited by PewterZ28; 06-16-2004 at 03:54 PM.
#51
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Originally Posted by Beast96Z
The AFR's supposedlly have a smaller port volume and the same if not better flow numbers than the competitiors heads. This would equal better velocity which in turn will equal better power all the way around, no matter what cam you have.
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
When you say better power all the way around, do you mean throughout the entire rpm range? Both horsepower and torque? Finally does faster velocity = faster revving (not sure if that’s the word I’m looking for. I’m talking about the speed at which the engine revs through the rpm range during acceleration).
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Originally Posted by PewterZ28
Ed, It's hard to read emotions over the internet so I can't really tell if you're implying I am being naive, unreasonable and my posts have been unprofessional or if you are simply trying to educate me on the harsh financial reality faced by even the highly successfull performance shops. If it is truly that difficult then I have sympathy for the shop owners/managers.
As for your other point, the reason I contacted the vendors I chose to email was because of the reputations they have here. It's not that I don't trust their opinion but rather I can not even get their opinion.
BTW.. Retired from the high pressure mechanical engineering field two years ago and it was the best thing for my health.
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Ed
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Originally Posted by PewterZ28
Getting back on subject.
When you say better power all the way around, do you mean throughout the entire rpm range? Both horsepower and torque? Finally does faster velocity = faster revving (not sure if that’s the word I’m looking for. I’m talking about the speed at which the engine revs through the rpm range during acceleration).
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
When you say better power all the way around, do you mean throughout the entire rpm range? Both horsepower and torque? Finally does faster velocity = faster revving (not sure if that’s the word I’m looking for. I’m talking about the speed at which the engine revs through the rpm range during acceleration).
![Secret](https://ls1tech.com/forums/images/smilies3/secret2.gif)
![Icon Lol](https://ls1tech.com/forums/images/smilies2/icon_lol.gif)
Technically yes, higher port velocity should improve torque throughout the rev range and inturn improve horespower. The car will rev faster because of the improved power.
Here is the dyno comparison of the AFR's at Westechs engine dyno.
Power
![](http://www.jakelatham.com/c5/images/misc/AFR%20Power.jpg)
Torque
![](http://www.jakelatham.com/c5/images/misc/AFR%20Torque.jpg)
Difference in power between the AFR and LS1 head, tabulated form
Power
RPM..........LS1..........AFR......AFR w 224.....LS1-AFR...LS1 -AFR 224
3.0............214..........217...........229..... ......3................15
3.5............257..........262...........274..... ......5................17
4.0............307..........323...........330..... ......16..............23
4.5............361..........375...........381..... ......14..............20
5.0............401..........427...........447..... ......26..............46
5.5............415..........451...........486..... ......36..............71
5.8............421..........455...........499..... ......34..............78
5.9............420..........458...........502..... ......38..............82
6.0............415..........457...........505..... ......42..............90
6.5............393..........451...........507..... ......58..............114
Torque
RPM...........LS1...........AFR....AFR w 224..LS1-AFR.....LS1 -AFR 224
3.0............375..........379...........401..... ......4.............26
3.5............385..........392...........411..... ......7.............26
4.0............403..........424...........433..... ......21...........30
4.5............421..........437...........441..... ......16...........20
4.8............426..........452...........462..... ......26...........36
5.0............421..........448...........469..... ......27...........48
5.5............396..........430...........464..... ......34...........68
6.0............363..........400...........442..... ......37...........79
6.5............317..........364...........410..... ......47...........93
Vital Specs............Stock LS1......AFR
Intake Port Volume......201......205
Intake Valve Size..........2"......2.02"
Exhaust Valve Size......1.6"....1.55"
Chamber Volume........67cc.....66cc
Here is the dyno graph for Tony Mamo's car
![](http://64.83.80.220/pics/AFRComparison.jpg)
This is an LG built car
Here is exactly what the car had in it.
Full belts, G5X-3 cam and LG Pro Long Tube headers, oval TB with tpis modified ls6 manifold, Mcleod dual disc clutch,11.24:1 compression, 93 octane gas, underdirve pulley, blackwing airfilter, Borla stinger mufflers, stock 342 gears. 6 speed trans.
The graph shows a direct before and after comparison. No other changes were made other than the AFR heads.
We are going in and tweek on the package and then try a "NO Belt" run to simulate an electric water pump. Should hit over 500rwhp and these are the small heads!
Thanks
Lou Gigliotti LGM
.
Full belts, G5X-3 cam and LG Pro Long Tube headers, oval TB with tpis modified ls6 manifold, Mcleod dual disc clutch,11.24:1 compression, 93 octane gas, underdirve pulley, blackwing airfilter, Borla stinger mufflers, stock 342 gears. 6 speed trans.
The graph shows a direct before and after comparison. No other changes were made other than the AFR heads.
We are going in and tweek on the package and then try a "NO Belt" run to simulate an electric water pump. Should hit over 500rwhp and these are the small heads!
Thanks
Lou Gigliotti LGM
.
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#56
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Ed, no doubt family always comes first.
Well what do you think Ed, should I try and get a hold of you?
Floyd, Ed and I have been sharing our thoughts in this very thread in case you didn't notice.![1poke](https://ls1tech.com/forums/images/smilies2/1poke.gif)
"Should hit over 500rwhp and these are the small heads!"
--Um, what would be considered the big heads then?
By the looks of where the torque peaks, it looks like a 4600 stall would work a little better than the YPT4400. Anyone agree/disagree with this?
Originally Posted by MUSTANGEATER
Derrick If I were you I'd try and get a hold of Ed Curtis (EDC). I'm trying to get him to do me an AFR Heads Cam Package and I now have similar N/A goals as you do. Now to get a hold of him when he's not busy making other people's stuff faster lol
Floyd
Floyd
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Floyd, Ed and I have been sharing our thoughts in this very thread in case you didn't notice.
![1poke](https://ls1tech.com/forums/images/smilies2/1poke.gif)
"Should hit over 500rwhp and these are the small heads!"
--Um, what would be considered the big heads then?
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
By the looks of where the torque peaks, it looks like a 4600 stall would work a little better than the YPT4400. Anyone agree/disagree with this?
#58
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Originally Posted by PewterZ28
Ed, no doubt family always comes first.
Well what do you think Ed, should I try and get a hold of you?
Floyd, Ed and I have been sharing our thoughts in this very thread in case you didn't notice.![1poke](https://ls1tech.com/forums/images/smilies2/1poke.gif)
"Should hit over 500rwhp and these are the small heads!"
--Um, what would be considered the big heads then?
By the looks of where the torque peaks, it looks like a 4600 stall would work a little better than the YPT4400. Anyone agree/disagree with this?
Well what do you think Ed, should I try and get a hold of you?
![Grin](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_grin.gif)
Floyd, Ed and I have been sharing our thoughts in this very thread in case you didn't notice.
![1poke](https://ls1tech.com/forums/images/smilies2/1poke.gif)
"Should hit over 500rwhp and these are the small heads!"
--Um, what would be considered the big heads then?
![Icon Confused](https://ls1tech.com/forums/images/smilies2/icon_confused.gif)
By the looks of where the torque peaks, it looks like a 4600 stall would work a little better than the YPT4400. Anyone agree/disagree with this?
Yes get ahold of Ed and yes I noticed just making sure you knew who he was
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
I'm thinking the Big Heads are the AFR 225 CC