Air Wolf 220 Results - Chevelle Tech
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  #1  
Old Mar 15th, 10, 11:19 AM
Dr J's Performance Dr J's Performance is offline
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Bryce
 
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Default Air Wolf 220 Results

I thought you guys might be interested in this info. I copied it off 1320techtalk. Bill went the extra mile to get some good data.

Hello All,

I have some results regarding the AIRWOLF cylinder heads. I have been very impressed with the results and workmanship of these cylinders heads. The only changes made in the dyno testing was the cylinder heads. The cylinder heads combustion chamber was a tad smaller then my current heads. So this netted an increase of approximately .25 in compression.
This is the engine combo

Dart block
4.155 bore
3.75 stroke
JE 13 CC dome pistons
Super vic intake modified by speier racing heads
Race demon Carb
Jones cam 262/266 at .050 680/640 lift on a 110

AFR heads were previously reworked by speier racing heads. This work netted a gain of .2 in the 1/8 mile with no other changes.

Also the headers used on the dyno were a set of sprint car headers. They were two inch primaries with 3.5 collectors. The primary tubes were in the 35-40 inch range. Unfortunitly I was unable to use my headers for these test because they would not clear the dyno stand. Per Pipemax, the headers used were not the optimal heads and I feel that some power was not realized on the dyno. The headers I have in the car are right what pipe max calls for.

I made a couple passes last saturday. Car ran 6.70 at 102.5 in 2500 corrected altitude. I then pulled the motor and conducted the following:

First the engine was dyno in its current configuration. We tried different timing settings and it showed to like 35 degrees. We did not change anything on the carb as egts and o2 showed that it was on.

Then the head swap was conducted. I had to get shorter pushrods to correct the rocker arm geometry

We made the first few pulls and the engine was down on power. My dyno operator felt is was the powervalves and wanted to square up/richen the jetting and remove the powervalves. We did this with no improvement. Well it turned out that we hadn't properly adjusted the throttle linkage and we were not getting WOT. Once we corrected that, the Airwolf heads started to shine.

Immediately we noticed that the peak power had move from 6700 to 7000. Furthermore, engine was now making 40 more uncorrect hp at 7000. We tried different timing, and jetting. Ended up with the best results at 80 squared, with 33 degrees of timing before I ran out of fuel to continue testing. I still think it is on the rich side, and will want the original jetting that I had in there.

Below are the dyno results.







I took the car out friday night, Car went 6.50@104.7 with a 1.44 sixty off the footbrake leaving at 2600 rpms. Air was at 2600 corrected altitude. This was the best et to date at the track at about 1600 higher CA. Best et to date was in San Antonio with mineshaft air of -300 feet. It ran a 6.42@106.

I also feel there is more in it, I forgot to bring the cable to reprogram my ignition box to change the shift point. There for these new best ets are shifting at 7000. Shifting at 7400-7500 would further take advantage of the heads. I believe there is probably another .05 in it. I will find out next weekend. I could really feel it start pulling about 6500.

I calculate the heads were go for a solid 40-50 hp over the worked AFR heads.

As Chad and I discussed before, my previous limitation was the on power was the cylinder head.

I am working on getting the electronic data for the dyno stuff.

Please let me know what you think or if you have any questions.

As I stated before, the workmanship on these heads is awesome, and the customer service is second to none. As I expected no less from chad, these heads have surpassed my expectation of them.





[/img]
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Bill Simpkins
Empty Pockets Racing
74 Chevy Nova
smallblock 406
1/8 6.42@106.5
1/4 10.15@130.5
Fourtenposi@yahoo.com
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Bryce Mulvey
Dr J's Performance
The Home of AIRWOLF Cylinder Heads
www.j-performance.com

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  #2  
Old Mar 15th, 10, 11:34 AM
lun40119 lun40119 is offline
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Default Re: Air Wolf 220 Results

Sounds pretty nice. What is the weight of your nova.
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  #3  
Old Mar 15th, 10, 12:14 PM
dirtlips408 dirtlips408 is online now
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Ron
 
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Default Re: Air Wolf 220 Results

Great info! What where the other AFR heads?? Where they the older afr 220's??
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  #4  
Old Mar 15th, 10, 12:21 PM
66 BRONZE 66 BRONZE is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by dirtlips408 View Post
Great info! What where the other AFR heads?? Where they the older afr 220's??
That would be my question, was the AFR heads the old design that you worked over, also do you feel that 1/4 point increase in compression helped with the horsepower gain in that combo.You also said the headers were not optimal for the dyno test, so would that not effect both tests.
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  #5  
Old Mar 15th, 10, 12:54 PM
lun40119 lun40119 is offline
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Default Re: Air Wolf 220 Results

Uh Oh............
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1967 Chevelle
1.321 60'
6.143 @ 110.46
9.754 @ 136.30
3V Performance 23 Pumpgas 402
http://www.youtube.com/user/excedrin67?feature=mhum#p/u/4/v1Tff2or1oY
1st Place Drag Week 2012 SB/NA
2nd Place Drag Week 2011 SB/NA
Jan 2012 HotRod
http://www.hotrod.com/featuredvehicles/hrdp_1201_1967_chevy_chevelle_its_big_to_be_small/
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  #6  
Old Mar 15th, 10, 12:57 PM
66 BRONZE 66 BRONZE is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by lun40119 View Post
Uh Oh............
Legitimate questions Jake, so don't start.
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1966 Chevelle 300 Deluxe Post, 327cu AFR180CC Street Eliminator, Voodoo, Harland Sharp 1.6 RR, Weiand Stealth Airstrike, 650cfm avs, MSD 4spd 355 posi

http://i183.photobucket.com/albums/x...2/P1010428.jpg
http://i183.photobucket.com/albums/x...2/P1010429.jpg

Last edited by 66 BRONZE; Mar 15th, 10 at 5:52 PM.
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  #7  
Old Mar 15th, 10, 1:23 PM
lun40119 lun40119 is offline
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Default Re: Air Wolf 220 Results

Ill keep my mouth shut......
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1967 Chevelle
1.321 60'
6.143 @ 110.46
9.754 @ 136.30
3V Performance 23 Pumpgas 402
http://www.youtube.com/user/excedrin67?feature=mhum#p/u/4/v1Tff2or1oY
1st Place Drag Week 2012 SB/NA
2nd Place Drag Week 2011 SB/NA
Jan 2012 HotRod
http://www.hotrod.com/featuredvehicles/hrdp_1201_1967_chevy_chevelle_its_big_to_be_small/
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  #8  
Old Mar 15th, 10, 1:42 PM
66 BRONZE 66 BRONZE is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by lun40119 View Post
Ill keep my mouth shut......
Thats not what I said. I just don't wan't to see this thread go up in smoke. Quite interesting though.
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1966 Chevelle 300 Deluxe Post, 327cu AFR180CC Street Eliminator, Voodoo, Harland Sharp 1.6 RR, Weiand Stealth Airstrike, 650cfm avs, MSD 4spd 355 posi

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http://i183.photobucket.com/albums/x...2/P1010429.jpg
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  #9  
Old Mar 15th, 10, 1:48 PM
trmnatr trmnatr is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by SNAP View Post
Thats not what I said. I just don't wan't to see this thread go up in smoke. Quite interesting though.
He has alot more left in the combo. He is shifting way too high for a powerglide IMO

Even though the engine is making power there the converter is loading the engine up too much when you spin it that far from the converter with a 1.76 powerglide

We learned the hard way
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  #10  
Old Mar 15th, 10, 1:59 PM
Chad Speier Chad Speier is offline
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Default Re: Air Wolf 220 Results

Heads were a set of #1054's. Here is the before/after. The dyno test was done back to back days. Both heads were dynod with the same headers. The test was about as fair as one could get. Same cam, same dyno, same everything. However, the 1/4 compression might be false. The new heads were 65cc, just never told Bill

Before (210cc)
LIFT-- INT/EXH
.200--140.4/109.7
.300--198/152.3
.400--247/178.4
.500--283.8/192.4
.600--289.2/197.2
.700--295.9/201
.800--294.4/203

After (215cc)
LIFT---int--/--exh(no pipe)
.200--161.4/119.1
.300--218.1/159.5
.400--262.4/188.3
.500--293.1/203.2
.600--307.4/208.2
.700--312.4/213.1
.800--315.1/214.7
.900--315.9/215.9

VELOCITY
Opening- 326 fps was/ 311 fps now
Choke(pushrod)- 349 fps was/ 321 fps now
ST- 251 fps was/ 235 fps now
WAS AVERAGE: 309 fps
NOW AVERAGE: 289 fps

Rememeber the heads were raced, never dynod, like the before numbers. Bill got a baseline, sent the heads to me and then went back to the track. Fixing the heads resulted in a .2+ gain. The AW are worth .50+ over a stock #1054 in Bills example.
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  #11  
Old Mar 15th, 10, 4:42 PM
Jack Armstrong Jack Armstrong is offline
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Question Dollars: Air Flow versus Air Wolf

Nice numbers throughout.

Comparative cost ratio?
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  #12  
Old Mar 15th, 10, 5:05 PM
Chad Speier Chad Speier is offline
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Default Re: Dollars: Air Flow versus Air Wolf

Quote:
Originally Posted by Jack Armstrong View Post
Nice numbers throughout.

Comparative cost ratio?
No supposed to quote prices. However they came from Jegs and he had less in the AW complete than the others ported.
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  #13  
Old Mar 15th, 10, 9:08 PM
cuisinartvette cuisinartvette is offline
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Default Re: Air Wolf 220 Results

1054 AFR 210 street heads?
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  #14  
Old Mar 15th, 10, 10:38 PM
Chad Speier Chad Speier is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by 67T56Elky View Post
1054 AFR 210 street heads?
Correct, he ran them then sent me the heads.

However, isn't the difference between the race ready and comp series the quality of the CNC'ing? From what I've seen, the port design is the same.

Mickey the cam is a roller. Not sure on the size of the KD. He had several carbs. I will find out.
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  #15  
Old Mar 15th, 10, 10:38 PM
66 BRONZE 66 BRONZE is offline
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Default Re: Air Wolf 220 Results

Quote:
Originally Posted by 67T56Elky View Post
1054 AFR 210 street heads?
Compared to a Competition 220cc or 245cc race head ??
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1966 Chevelle 300 Deluxe Post, 327cu AFR180CC Street Eliminator, Voodoo, Harland Sharp 1.6 RR, Weiand Stealth Airstrike, 650cfm avs, MSD 4spd 355 posi

http://i183.photobucket.com/albums/x...2/P1010428.jpg
http://i183.photobucket.com/albums/x...2/P1010429.jpg

Last edited by 66 BRONZE; Mar 15th, 10 at 11:01 PM.
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