Are AFR heads worth the extra $$$$
08-28-2009 | 11:41 PM
#41
1) AFR Heads have a Carb EO because they are direct replacement heads
2) In the certification testing, the heads ran cleaner than stock and improved fuel economy. If that doesn't tell you something about combustion efficiency, it ought to.
3) AFR 205 heads have a greater valve drop than stock castings (i.e. more PTV clearance) which could save you the time/materials/effort of cutting reliefs in your stock pistons, or allow you to run a larger cam without PTV issues.
4) AFR heads running 2.02/1.60 valves are flowing similar to stg 2.5 ported castings with larger valves, which will increase shrouding in a 3.9" bore. Same results on a 4" or 4.125" bore do not necessarily bear out when installed on a 3.9" bore.
5) Any aftermarket casting gains the benefit of starting with a clean slate. Properly engineered castings can address all the factory weaknesses and put material where it needs to be to make sure the finished product is strong enough after CNC work is done.
Are they expensive? That is a relative term...buying two sets of heads to get the results you are after will definitely cost more than buying the right ones the first time.
Are they worth it? Do some research and decide for yourself. AFR, TFS, PRC are all quality products. Look for consistant results, do your homework, and address all the details, and you will be happier in the long run.
Good Luck!
2) In the certification testing, the heads ran cleaner than stock and improved fuel economy. If that doesn't tell you something about combustion efficiency, it ought to.
3) AFR 205 heads have a greater valve drop than stock castings (i.e. more PTV clearance) which could save you the time/materials/effort of cutting reliefs in your stock pistons, or allow you to run a larger cam without PTV issues.
4) AFR heads running 2.02/1.60 valves are flowing similar to stg 2.5 ported castings with larger valves, which will increase shrouding in a 3.9" bore. Same results on a 4" or 4.125" bore do not necessarily bear out when installed on a 3.9" bore.
5) Any aftermarket casting gains the benefit of starting with a clean slate. Properly engineered castings can address all the factory weaknesses and put material where it needs to be to make sure the finished product is strong enough after CNC work is done.
Are they expensive? That is a relative term...buying two sets of heads to get the results you are after will definitely cost more than buying the right ones the first time.
Are they worth it? Do some research and decide for yourself. AFR, TFS, PRC are all quality products. Look for consistant results, do your homework, and address all the details, and you will be happier in the long run.
Good Luck!
08-29-2009 | 01:28 PM
#43
Well, I thought I would find more results than this. Maybe more creative searching. I saw your replies to a couple of the threads I found, so obviously you've searched to....
11.20 @ ???
11.44 @ 120.8
Signature: 99 Trans Am M6
AFR 205 Heads, Comp 230/232 cam, Mamo Ported FAST 92/NW 92, Speed Inc Rails, 42LB SVO Injectors, Racetronix Pump, Fast Toys Lid, FTRA, Dual Stage Dry Kit, 160* stat, ASP pully, FLP LTs, Borla Cat-Back, B&M Ripper, SPEC Stage 3 Clutch, Moser 12 Bolt W/4.11s, Dennys N2O DS, D&D Viper Spec T56, BMR K-Member, SFCs, LCAs, LCARLBs, DSL, Trq Arm, and APHR, QA1's, Welds, 27in QTPs.
New times coming....
11.42 @ 123.98
11.51 @ 116.59
402rwhp/367rwtq = 11.51 @ 116.59
9.91@133 - 2800lbs, 55ft DA
11.32 @ 122.27
11.61 @119.91
11.91 @ 113.13
11.20 @ ???
first time with my new combo. The weather was pretty nice with a DA of around 800ft. The car is an M6 with a stock LS1 shortblock, AFR 205s, a custom Comp 230/232-112 cam, and an LS6 Intake. The rest of my mods are in my sig.
Launch RPM for all three runs was a 4500 dump off the 2-Step. Race weight was ~3475lbs.
The second pass I let the tires down to 12 psi hot.
60' 1.665
1/8 7.326
MPH 96.13
1/4 11.416
MPH 120.77
The third pass I let them down to about 11 psi hot.
60' 1.674
1/8 7.352
MPH 96.05
1/4 11.443
MPH 120.80
I am pleased with the results. My prior best with my stock hand-ported 853s and TR224 was 11.8X at 118.XX on a 1.73 60'.
Launch RPM for all three runs was a 4500 dump off the 2-Step. Race weight was ~3475lbs.
The second pass I let the tires down to 12 psi hot.
60' 1.665
1/8 7.326
MPH 96.13
1/4 11.416
MPH 120.77
The third pass I let them down to about 11 psi hot.
60' 1.674
1/8 7.352
MPH 96.05
1/4 11.443
MPH 120.80
I am pleased with the results. My prior best with my stock hand-ported 853s and TR224 was 11.8X at 118.XX on a 1.73 60'.
AFR 205 Heads, Comp 230/232 cam, Mamo Ported FAST 92/NW 92, Speed Inc Rails, 42LB SVO Injectors, Racetronix Pump, Fast Toys Lid, FTRA, Dual Stage Dry Kit, 160* stat, ASP pully, FLP LTs, Borla Cat-Back, B&M Ripper, SPEC Stage 3 Clutch, Moser 12 Bolt W/4.11s, Dennys N2O DS, D&D Viper Spec T56, BMR K-Member, SFCs, LCAs, LCARLBs, DSL, Trq Arm, and APHR, QA1's, Welds, 27in QTPs.
New times coming....
11.42 @ 123.98
My weather station had the day between 1200 and 1600 ft above sea level (confirmed by another weather station as well).
My first two runs I choose to keep the air pressure in the ET Streets around 20 lbs. to try and avoid breaking parts and get a feel of how the track was hooking and with both of those runs spinning out of the hole (and on my 1-2 shift), the car ran an 11.42 the first run and an 11.50 the second, with 1.80 and 1.81 sixty foot times. Not all that impressive until you look at the MPH which is a much better indicator of "power" (as most of the sharper drag guys know)....The car ran 123.98 and backed it up with a 123.96 the second run!!
I was extremely pleased with those results as my car is quite heavy for a Vette....With me in it, the car weighed exactly 3440 lbs. today. It certainly is no stripped down Z06 with skinnies etc, that would come in 200 lbs less with an average weight driver. In fact, I ran my standard front wheel package which is a fairly heavy 285/35/18 Nitto.
Regards to all,
Tony Mamo
My first two runs I choose to keep the air pressure in the ET Streets around 20 lbs. to try and avoid breaking parts and get a feel of how the track was hooking and with both of those runs spinning out of the hole (and on my 1-2 shift), the car ran an 11.42 the first run and an 11.50 the second, with 1.80 and 1.81 sixty foot times. Not all that impressive until you look at the MPH which is a much better indicator of "power" (as most of the sharper drag guys know)....The car ran 123.98 and backed it up with a 123.96 the second run!!
I was extremely pleased with those results as my car is quite heavy for a Vette....With me in it, the car weighed exactly 3440 lbs. today. It certainly is no stripped down Z06 with skinnies etc, that would come in 200 lbs less with an average weight driver. In fact, I ran my standard front wheel package which is a fairly heavy 285/35/18 Nitto.
Regards to all,
Tony Mamo
this is the AFR "street" package I spoke about in great length a few months ago....224/228 cam, FAST 90, etc....very stealthy, perfect driving manners, and big power.
Grant, I was shifting right at 7050 or so (7000 RPM Shift light plus reaction time) and as I mentioned earlier with 3.90's out the back.
Thanks,
Tony M.
Grant, I was shifting right at 7050 or so (7000 RPM Shift light plus reaction time) and as I mentioned earlier with 3.90's out the back.
Thanks,
Tony M.
402rwhp/367rwtq = 11.51 @ 116.59
Made a couple mid 11.50 runs this week in my 2000 SS. Stock weight with converters and Magnaflow catback and drag wheels/tires.
All I can say is the Yank 4000SS suited my car perfectly. Was previously running a Yank PY3400 in the car which was completely wrong for my combo.
The Yank 4000SS picked me .660 over the Yank PY3400.
Combo is mild LS1 with AFR 205's, 224/230 Comp XER, Kooks 1 7/8 tube, Fast 90/90, A4, Ford 3.70 9", and Magnaflow cat back.
Went 11.51 @ 116.59 1/4
60' - 1.575
330' - 4.663
660' - 7.295
660' MPH - 93.25
1000' - 9.578
Shift points were set @ 6100. Went to raise them to 6450 and make another hit and it started to drizzle so they called it for the evening. Thinking I can get into the mid 40's next time out
All I can say is the Yank 4000SS suited my car perfectly. Was previously running a Yank PY3400 in the car which was completely wrong for my combo.
The Yank 4000SS picked me .660 over the Yank PY3400.
Combo is mild LS1 with AFR 205's, 224/230 Comp XER, Kooks 1 7/8 tube, Fast 90/90, A4, Ford 3.70 9", and Magnaflow cat back.
Went 11.51 @ 116.59 1/4
60' - 1.575
330' - 4.663
660' - 7.295
660' MPH - 93.25
1000' - 9.578
Shift points were set @ 6100. Went to raise them to 6450 and make another hit and it started to drizzle so they called it for the evening. Thinking I can get into the mid 40's next time out
I threw some AFR 205's (out of the box,flowed 3 cfm than what they claim)
memorial day weekend.Picked up .3 and 3mph just like it should.
I knew the killer air was rolling in yesterday, so off to the track I go.
1st hit off the trailer was-
60'-1.265
330'-4.025
1/8th-6.316
MPH-106.64
1000'-8.311
1/4-10.007
MPH-132.38
I was happy but bummed.I couldn't believe the 60' was that good but mad
because I pulled a 1.26 and didn't go 9's.
Next pass a was a tad low on fuel(hiccuped in 2nd gear)
10.07@131
put fuel in hot lapped it
10.01@132
So now it's crunch time.I know I need more MPH to go 9's so I pull the door
panels and dash pad. Let the car cool down and bring it around.
Put it up on the 2 step and let it fly
60'-1.246 (Hi Joe Overton)
330-3.971
1/8th-6.246
MPH-107.67
1000'-8.231
1/4-9.919
MPH-133.18
DA was +55
car weighed about 2800#
memorial day weekend.Picked up .3 and 3mph just like it should.
I knew the killer air was rolling in yesterday, so off to the track I go.
1st hit off the trailer was-
60'-1.265
330'-4.025
1/8th-6.316
MPH-106.64
1000'-8.311
1/4-10.007
MPH-132.38
I was happy but bummed.I couldn't believe the 60' was that good but mad
because I pulled a 1.26 and didn't go 9's.
Next pass a was a tad low on fuel(hiccuped in 2nd gear)
10.07@131
put fuel in hot lapped it
10.01@132
So now it's crunch time.I know I need more MPH to go 9's so I pull the door
panels and dash pad. Let the car cool down and bring it around.
Put it up on the 2 step and let it fly
60'-1.246 (Hi Joe Overton)
330-3.971
1/8th-6.246
MPH-107.67
1000'-8.231
1/4-9.919
MPH-133.18
DA was +55
car weighed about 2800#
ok...afr 205 heads 59cc cametic 0.40 gaskets 346ci. g5x3 cam,kook headers w/off roads and b&b try flo cat back. asp pulley,12 bolt w/4.11's m6. lca'shal qa1,fraim welded and panhard rod. stock th body,massair and ls6 intake. i pushed close to 430hp 390 tq on a mustang dyno.my car is stock weight,i use no front runners anytime anywhere. i do use slicks 26x11.5x16 m&h racemasters(www.intercotire.com) again my car went 11.3's at 122mph on a clutch that was bad and did die that day.the car has more in it.
60foot 1.68
594 ft 6.89
1/8 99.53
1/4 11.31
mph 122.27
i also did cut a 1.58 60 and ran 11.34,11.35 and 11.36 but every time my mph went down to 118mph. on my 1.58 60 foot run if the clutch was good the car may of went 11.1's. i hope this helps. mike c.
60foot 1.68
594 ft 6.89
1/8 99.53
1/4 11.31
mph 122.27
i also did cut a 1.58 60 and ran 11.34,11.35 and 11.36 but every time my mph went down to 118mph. on my 1.58 60 foot run if the clutch was good the car may of went 11.1's. i hope this helps. mike c.
Ran My WS6 tonight at Sacramento raceway......
11.559@119.092 1.606 60'
11.561@119.952 1.607 60'< Best mph
11.640@118.851 1.614 60'
11.669@118.451 1.647 60'
11.618@119.915 1.662 60'
11.707@117.115 1.638 60'< slightly missed 4th, lol
I was a little disappointed in the mph, but over all I am pretty happy.
11.559@119.092 1.606 60'
11.561@119.952 1.607 60'< Best mph
11.640@118.851 1.614 60'
11.669@118.451 1.647 60'
11.618@119.915 1.662 60'
11.707@117.115 1.638 60'< slightly missed 4th, lol
I was a little disappointed in the mph, but over all I am pretty happy.
I was thinking the same thing.
As far a weight reduction
-bmr k frame w/ hal shocks, upper and lower tubular a arms
-spare and jack
-floor mats
-cargo flap thing in the back
-Convo Pro's, slicks and skinnies
-less than a 1/4 tank of gas
+ Moser 12 bolt
+ heavy *** bmr tq arm
+ sub frame connectors
+ 1 inch rear sway bar
I originally weighed my car when it was stock, with a half tank of gas @ 3520
I weigh about 220.
As far a weight reduction
-bmr k frame w/ hal shocks, upper and lower tubular a arms
-spare and jack
-floor mats
-cargo flap thing in the back
-Convo Pro's, slicks and skinnies
-less than a 1/4 tank of gas
+ Moser 12 bolt
+ heavy *** bmr tq arm
+ sub frame connectors
+ 1 inch rear sway bar
I originally weighed my car when it was stock, with a half tank of gas @ 3520
I weigh about 220.
first run on street tires
2.431 9.175 87.39 13.641 110.77
2nd run still on street tire with a little smoke show
2.831 11.421 77.68 16.165 106.65
3rd with ET streets
1.768 7.672 91.48 12.024 112.82
4th
1.819 7.730 91.82 12.071 112.51
5th
1.713 7.582 92.06 11.916 113.13
6th
1.731 7.605 92.01 11.939 113.06
7th with a NX 50 shot
1.676 7.343 95.12 11.502 118.45
8th again with a 50 shot
1.644 7.321 95.33 11.476 118.44
the new motor only has 300 miles on it and we're still working on the tune (23* of spark and shifting at 6200 rpms), I hope its got more in it
2.431 9.175 87.39 13.641 110.77
2nd run still on street tire with a little smoke show
2.831 11.421 77.68 16.165 106.65
3rd with ET streets
1.768 7.672 91.48 12.024 112.82
4th
1.819 7.730 91.82 12.071 112.51
5th
1.713 7.582 92.06 11.916 113.13
6th
1.731 7.605 92.01 11.939 113.06
7th with a NX 50 shot
1.676 7.343 95.12 11.502 118.45
8th again with a 50 shot
1.644 7.321 95.33 11.476 118.44
the new motor only has 300 miles on it and we're still working on the tune (23* of spark and shifting at 6200 rpms), I hope its got more in it
Yes, 66cc unmilled.
I'm not really sure about the cars weight, with me maybe around 3500-3600 lbs
I'm not sure about the converter?
Yes, stock LS-6 intake, stock Shaner S-2 TB
Yes, right around sea level.
I added that the tune has 23* of spark and shifting at 6200, maybe shift at 6500-6600 will help a little?
I'm not really sure about the cars weight, with me maybe around 3500-3600 lbs
I'm not sure about the converter?
Yes, stock LS-6 intake, stock Shaner S-2 TB
Yes, right around sea level.
I added that the tune has 23* of spark and shifting at 6200, maybe shift at 6500-6600 will help a little?
08-29-2009 | 06:43 PM
#46
Personally, I'd look into the AFR215 heads. I really want to see some results on this head as I am looking at it for my setup here in the future...
08-29-2009 | 06:58 PM
#47
TECH Addict
iTrader: (24)
Joined: Oct 2006
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From: Webb City, MO...out in the garage
I ran TSP's stage 2.5 5.3 heads on my old LS1. I had a FAST90 that i ported myself on top with a 231/237 .589/.595 112 cam from Speed Inc. (SI5) through a T56 and 9" with 4.11's the car made 452/395. Never got track times but i pulled a high 10-sec RX-7 on the street by like 4 or 5 cars and walked several 11.3-11.5 cars. That's not to say they were running their best, but i spun hard all the time until mid-3rd gear.
~$500 if i remember.
~$500 if i remember.
08-29-2009 | 07:20 PM
#49
Right after I bought and installed my Livernois, all of sudden I found some good deals on AFR heads in the classifieds. Just my luck. 
AFRs are great for us California guys because ALL of thier heads are CARB legal.
.
AFRs are great for us California guys because ALL of thier heads are CARB legal.
.
08-29-2009 | 11:41 PM
#50
1) AFR Heads have a Carb EO because they are direct replacement heads
2) In the certification testing, the heads ran cleaner than stock and improved fuel economy. If that doesn't tell you something about combustion efficiency, it ought to.
3) AFR 205 heads have a greater valve drop than stock castings (i.e. more PTV clearance) which could save you the time/materials/effort of cutting reliefs in your stock pistons, or allow you to run a larger cam without PTV issues.
4) AFR heads running 2.02/1.60 valves are flowing similar to stg 2.5 ported castings with larger valves, which will increase shrouding in a 3.9" bore. Same results on a 4" or 4.125" bore do not necessarily bear out when installed on a 3.9" bore.
5) Any aftermarket casting gains the benefit of starting with a clean slate. Properly engineered castings can address all the factory weaknesses and put material where it needs to be to make sure the finished product is strong enough after CNC work is done.
Are they expensive? That is a relative term...buying two sets of heads to get the results you are after will definitely cost more than buying the right ones the first time.
Are they worth it? Do some research and decide for yourself. AFR, TFS, PRC are all quality products. Look for consistant results, do your homework, and address all the details, and you will be happier in the long run.
Good Luck!
2) In the certification testing, the heads ran cleaner than stock and improved fuel economy. If that doesn't tell you something about combustion efficiency, it ought to.
3) AFR 205 heads have a greater valve drop than stock castings (i.e. more PTV clearance) which could save you the time/materials/effort of cutting reliefs in your stock pistons, or allow you to run a larger cam without PTV issues.
4) AFR heads running 2.02/1.60 valves are flowing similar to stg 2.5 ported castings with larger valves, which will increase shrouding in a 3.9" bore. Same results on a 4" or 4.125" bore do not necessarily bear out when installed on a 3.9" bore.
5) Any aftermarket casting gains the benefit of starting with a clean slate. Properly engineered castings can address all the factory weaknesses and put material where it needs to be to make sure the finished product is strong enough after CNC work is done.
Are they expensive? That is a relative term...buying two sets of heads to get the results you are after will definitely cost more than buying the right ones the first time.
Are they worth it? Do some research and decide for yourself. AFR, TFS, PRC are all quality products. Look for consistant results, do your homework, and address all the details, and you will be happier in the long run.
Good Luck!
Now this makes sense.
Not to mention that flat torque curve they seem to make
time and time again on the dyno.
.
08-30-2009 | 12:05 AM
#52
Hell no. I was going to send mine off this winter to be ported, but if its 500 dollars... Forget about it. 
08-30-2009 | 08:09 PM
#54
Hell no. I was going to send mine off this winter to be ported, but if its 500 dollars... Forget about it.
08-30-2009 | 08:13 PM
#55
https://ls1tech.com/forums/generatio...-my-setup.html
Check out this thread about getting the FAST ported. Some pretty wicked numbers...
Check out this thread about getting the FAST ported. Some pretty wicked numbers...
08-31-2009 | 04:45 AM
#56
If you look at it in terms of $/hp, Tony's ported FAST is cheaper then a lot of other mods that guys make. All his testing was done with AFR heads, the subject of this thread, so he is the perfect guy to port the FAST IMO.
08-31-2009 | 05:58 PM
#58
TSP sells fast92 for $799,do they intake porting?
08-31-2009 | 06:43 PM
#59
What ever heads you go with make sure they are set up for the cam you are using. People seem to get caught up on numbers and the higher the number the better but what separates a good head from a great head is velocity. How fast can you get that air in and exhaust out. It all depends on how well the heads mate to the cams, to include valves, springs and gaskets. Who ever does your heads has to make sure the heads and cam are compatible, if not you can have the best AFR heads and a shitty combo, you'll have a guy with P&P 241's with the correct set up running circles around you.
09-02-2009 | 09:21 PM
#60
Thanks for the post...i like the 11.20 setup since i have an A4 an would like to use
the Vig 3200. I had a Vig 3600 and it was great, but i know a few guys that ran great
with the Vig 3200 as well. Thanks all for your input.
the Vig 3200. I had a Vig 3600 and it was great, but i know a few guys that ran great
with the Vig 3200 as well. Thanks all for your input.