Just before wrapping this piece up, let me say a few words on wheel choice and safety. Wheels are purpose-built. A wheel designed for drag racing can be very light because it does not have to take the kind of abuse a road-racing wheel would be subjected to. Do not under any circumstances shortchange wheel strength for the job just to get a lower moment of inertia.

Lastly, tires: Because these are at a larger radius than the wheel, they can have a bigger influence for a given weight reduction. The way to check to see if the tire you intend to purchase is heavier than some of its direct competitors is to go online at www.tirerack.com and check out the tire specs. All the weights are listed. Yes, it really is that simple.

FIG. 3
RPM Hp at Hp at
  300/sec 600/sec
2,250 1.7 7.7
2,500 3.4 8.5
2,750 4.2 9.5
3,000 4.0 12.0
3,250 4.3 12.4
3,500 6.0 14.6
3,750 7.1 15.0
4,000 7.6 16.8
4,250 7.3 16.2
4,500 8.5 17.2
4,750 6.3 19.0
5,000 6.6 17.1
5,250 10 18.0
5,500 8.3 18.9
5,750 7.7 18.6
6,000 6.8 21.7
6,250 4.7 20.2
FIG. 7
5.0 FACTORY STOCKER
  Heavy Light Improvement
60 ft 1.788 1.739 0.049
330 ft 5.114 5.043 0.071
660 ft 7.896 7.823 0.073
1/8 MPH 88.847 88.387 - 0.46
1,000 ft 10.337 10.249 0.088
1,320 ft 12.39 12.289 0.101
1/4 MPH 109.757 110.399 0.642

The "improvement" column shows gains everywhere for the lighter flywheel, except for speed at the eighth-mile.

FIG. 8
SUPERCHARGED 5.0
  Heavy Light Improvement
60 ft 1.651 1.577 0.074
330 ft 4.606 4.458 0.148
660 ft 7.029 6.869 0.16
1/8 MPH 101.763 101.817 0.054
1,000 ft 9.104 8.952 0.152
1,320 ft 10.863 10.725 0.138
1/4 MPH 127.81 126.443 - 1.367

Again, the "improvement" column shows lighter is better. Trap speeds were down at the end of the quarter mile due probably to excess engine temperature from so many back-to-back runs

FIG. 10
HEAVY WHEELS & 2,000 lbs
  Improvement Finish Line Advantage
  Over Baseline Over Baseline, in feet
ET AVERAGE:
14.7303 = Baseline Number  
MPH Average:
88.98 = Baseline Number  
LIGHT WHEELS & 2,000 LBS
ET Average:
14.6973 0.033 seconds 4.4 ft
MPH Average:
89.17 0.19 mph  
Light Wheels & 1,968 lbs
ET Average:    
14.6303 0.1000 seconds 13.1 ft
MPH Average:
89.52 0.54 mph  
Heavy Wheels & 1,940 lbs
ET Average:    
14.6307 0.0996 seconds 13.1 ft
MPH Average:
89.65 0.67 mph  
ADVERTISER INDEX
AIR FLOW RESEARCH CO 66
AIR RIDE TECHNOLOGIES 15
AIRAID INTAKE SYSTEMS 97
AMERICAN TOURING SPECIALTIES 95
APOLLO TRICK TITANIUM 97
BOSCH 2-3
CAD COMPANY 97
CHRIS ALSTON'S CHASSISWORKS INC 19
CLASSIC INDUSTRIES C3
CLASSIC TUBE 105
COMPETITION CAMS INC 68, 69
COMPETITION PRODUCTS 29
DETROIT SPEED ENGINEERING 67
DICK MILLER RACING 79
DRIVE TRAIN SPECIALISTS 95
FACTORY FIVE RACING INC 23
GLOBAL WEST SUSPENSION 77
GOODGUY ENTERPRISES INC 13, 53-56
HOTCHKIS PERFORMANCE 8
HOWARDS CAMS 19
HUGHES PERFORMANCE 76
INDY CYLINDER HEADS 98
INLINE TUBE 79
ISKENDERIAN RACING CAMS 99
JE PISTONS 50
JEGS HI PERFORMANCE CENTER 7
JIM PACE GM PARTS WAREHOUSE 23
MAGNUSON PRODUCTS 50
MONDELLO PERFORMANCE 99
NATIONAL PARTS DEPOT 98
NEWSTALGIA WHEELS 5
NITTO TIRES C4
ORIGINAL PARTS GROUP INC 96
OUTDOOR CHANNEL 11
PRO PLUS MEDICAL 101
PROFESSIONAL PRODUCTS 79
RANDY'S RING PINION 15
REIDER RACING ENTERPRISES 70
RICK'S HOT RODS INC 99
SCAT ENTERPRISES 78
SHAFIROFF RACING ENGINES 77
SNOW PERFORMANCE 99
SPEED-O-MOTIVE 94
SPIN TECH MUFFLERS 79
STAINLESS STEEL BRAKES 66
STRANGE ENGINEERING 71
TCI AUTOMOTIVE 9
TURN KEY ENGINE SUPPLY 97
YEAR ONE INC 70
ZEX INNOVATIONS 51
SOURCE
CP Pistons
Irvine
CA
949-567-9000
www.cppistons.com
Professional Products
Hawthorne
CA
3-23/-779-2020
professional-products.com
Clutch Masters Competition Clutch, Inc.
704 Blacklawn Rd.
Conyers
GA  30012
Dept. PHR
KB Pistons, United Engine & Machine
4090 Goni Rd.
Carson City
NV  89701
Dept. PHR
McLeod Industries
1600 Sierra Madre Cir.
Placentia
CA  92870
714-630-2764
ATI Performance Products Inc.
6747 Whitestone Road,
Dept. MMFF
Baltimore
MD  21207
Lunati (Division of Holley)
4770 Lamar Ave., Dept. PHR
Memphis
TN  38118-7403
Scat Enterprises Inc.
1400 Kingsdale Avenue,
Dept. MMFF
Redondo Beach
CA  90278
The Tire Rack
Weld Racing
933 Mulberry St.
Kansas City
MO  64101
816-421-8040
Maximum Motor Sports
3430 Sacramento Dr., Unit D
San Luis Obispo
CA  93401
Dept. PHR
Fidanza Engineering Corp.