One of the primary reasons why the 9" Ford rear end has come to dominate drag racing is the ease with which thirdmembers with various ring & pinion gear ratios can be installed. The aftermarket has responded to this by offering a plethora of ratios ranging from 2.91 to 6.50:1. At last glance there are nearly 40 ratios available in standard 9Wallace Racing Calculate Rear End Gear Ratio needed,To find the ideal gear ratio for drag racing use your RPM at peak HP. Example: If your max HP is at 6300 RPM use 6300 for the RPM. Gearing for cruising To find the ideal gear ratio for cruising use your RPM at peak Torque. Example: If your max Torque is at 3300 RPM use 3300 for the RPM.

Jan 04, 2021· The basic difference in applications is between drag racing, with its standing starts, and road racing, where minimum speeds are possibly around 40 mph. For good drag launches, you often want the lowest possible first gear ratio and carefully spaced steps from there.How to Choose the Right Gear Ratio for Your Muscle Car or,Jan 07, 2020· With a 3.08:1 rear gear, the effective First gear ratio is equal to a 2.20:1 First gear Muncie four-speed with 4.56:1 rear gear. In the quarter-mile, Fourth gear

For example, the default figures in the chart are for a stock ratio transmission as fitted to a Type 1, 1303S (3.88 ring and pinion). Shifting at 5000rpm from 3rd gear into 4th (76mph), sees engine speed drop by almost 1500rpm, to a little over 3500rpm.Drag Performance Calculator Motive Gear,DRAG PERFORMANCE CALCULATOR. Vehicle Weight (in pounds) Vehicle Horsepower: RPM through lights (finish line) Tire Diameter (Hght.) in Inches : 1/4 Mile ET: 1/4 Mile Top End Speed: Ideal 1/4 Mile Gear Ratio:

Mar 16, 2015· Starting-Line Ratio = First-Gear Ratio x Rear-Axle Gear Ratio . For example, if your car’s trans-mission has a 2.48:1 first-gear ratio and a 4.10:1 rear-axle gear ratio, the starting-line ratio is 10.168:1. If you have a 3,500-pound car with a crankshaft stroke of 3.75 inches, you are very close to your ideal starting-line ratio.Drag Racing Traction: Suggestions for a More Consistent,Mar 16, 2015· That seems pretty simple, and if that were all there was to it, it would be. Both transmissions have a final gear ratio of 1:1, so once in the final (top) gear, they both perform the same. The big difference is the first-gear ratio. From the factory, a Powerglide transmission has either a 1.76:1 or 1.82:1 first gear.

Aug 08, 2011· Each gear ratio dictates how many engine speed (RPMS) to how many rotations of the final gear to finally how many rotations of the wheels of the car. The bigger the ratio number, the shorter the gear. So a 4.00 FINAL DRIVE gear ratio means for every 4 rotations of the driveshaft (continuing the rear wheel drive example), the wheels turn 1 time.Gear Ratio Calculator Summit Racing Equipment,Gear Ratio Calculator. Ring-and-pinion selection made easy! Save yourself the headache and let us figure out your ring-and-pinion gear ratio! Just type in your info (example: 5000 RPM), press calculate, and you’ll get the right ratio without the guesswork.

Apr 01, 2008· If you were a drag racer, it didn't take long to learn that highway gears didn't work at the drags any better than a close-ratio four-speed and a 4.88:1 ring-andpinion did on the highway.Techtips Drag Racing Traction: Making a Pass,Mar 16, 2015· Starting-Line Ratio = First-Gear Ratio x Rear-Axle Gear Ratio . For example, if your car’s trans-mission has a 2.48:1 first-gear ratio and a 4.10:1 rear-axle gear ratio, the starting-line ratio is 10.168:1. If you have a 3,500-pound car with a crankshaft stroke of 3.75 inches, you are very close to your ideal starting-line ratio.

DRAG PERFORMANCE CALCULATOR. Vehicle Weight (in pounds) Vehicle Horsepower: RPM through lights (finish line) Tire Diameter (Hght.) in Inches : 1/4 Mile ET: 1/4 Mile Top End Speed: Ideal 1/4 Mile Gear Ratio:Drag Racing Traction: Suggestions for a More Consistent,Mar 16, 2015· That seems pretty simple, and if that were all there was to it, it would be. Both transmissions have a final gear ratio of 1:1, so once in the final (top) gear, they both perform the same. The big difference is the first-gear ratio. From the factory, a Powerglide transmission has either a 1.76:1 or 1.82:1 first gear.

Aug 08, 2011· Each gear ratio dictates how many engine speed (RPMS) to how many rotations of the final gear to finally how many rotations of the wheels of the car. The bigger the ratio number, the shorter the gear. So a 4.00 FINAL DRIVE gear ratio means for every 4 rotations of the driveshaft (continuing the rear wheel drive example), the wheels turn 1 time.Tech Talk #47 Reher Morrison Racing Engines,The numerically higher gear ratio gives the engine a mechanical advantage by multiplying its torque by a greater number to accelerate the car faster in effect, it has a longer lever to move the mass. I learned this lesson many years ago when I started drag racing. I raced my little 302cid Camaro against 426 Hemis and 440cid Max Wedge Mopars.

Therefore, the next objective is to jet the carb in wide-open-throttle conditions for 13 13.5:1 Air/Fuel in third and fourth gear. Carb Drag Test. The preceding graphic shows that the car is running too lean in third and fourth gear ( Air/Fuel in the 14:1 range) with 80 size jets in the primaries (plus a power valve) and 88s in the secondaries.The Right Transmission for Your Drag Car RacingJunk News,Jan 06, 2015· This Jerico Racing 4-Speed Drag Transmission offers short shift throws, making for faster shifts. When the driver and engines are both evenly matched, the right transmission and differential in your strip burner can mean the difference between a winning pass and an almost winning pass.

Oct 18, 2011· Choosing gear ratio for a Muncie Discussion in 'Engine Topic' started by maverick09, Oct 18, 2011. Oct 18, 2011 #1. maverick09 New Member. Messages: 19 Likes Received: 0. Joined: Oct 17, 2011 Location: canada. Hey guys, I have a Muncie m20 with a first gear of 2.56 and was wondering if a 3:73 rear end would work well together? Has anyone runAxle Ratios Dodge Challenger Forum,Feb 15, 2020· Here are the gear ratios for the 392 Scat Packs and SRT Hellcats: Effects of Rear Axle Ratio and Tire Diameter on Drag Racing For those of you crossing the ¼ mile finish line at an engine speed higher or lower than the desired rpm your engine likes, you can change rear end gear ratios, or you might consider changing the tire diameter.

Drag Performance Calculator By AssassinRacing Calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio for a given application based on the Vehicle Weight (in pounds), Vehicle Horsepower (at the flywheel), RPM through lights (finish line), and Tire Diameter (Height) in Inches.Drag Racing Analyzer PRO Performance Trends,Like its "little brother" the standard Drag Racing Analyzer, it let's you play "what if" with engine power, weather, gear ratios, tire size, driving style, etc. and see the effect on ET, MPH, 60 ft times, tire spin, and much more. "Its like having a drag strip, dyno and chassis shop right in your computer."

Typically a tall gear (2.79 3.70), would be used in a street car depending on the powerplant the car has installed, whereas a short gear (4.29 and up) would be the ratio of choice for big-power racing applications of 1,000 horsepower and higher.Final Gear Ratios Street Rodder Magazine,Apr 01, 2008· If you were a drag racer, it didn't take long to learn that highway gears didn't work at the drags any better than a close-ratio four-speed and

Mar 16, 2015· Starting-Line Ratio = First-Gear Ratio x Rear-Axle Gear Ratio . For example, if your car’s trans-mission has a 2.48:1 first-gear ratio and a 4.10:1 rear-axle gear ratio, the starting-line ratio is 10.168:1. If you have a 3,500-pound car with a crankshaft stroke of 3.75 inches, you are very close to your ideal starting-line ratio.Drag Racing Traction: Suggestions for a More Consistent,Mar 16, 2015· That seems pretty simple, and if that were all there was to it, it would be. Both transmissions have a final gear ratio of 1:1, so once in the final (top) gear, they both perform the same. The big difference is the first-gear ratio. From the factory, a Powerglide transmission has either a 1.76:1 or 1.82:1 first gear.

Jan 14, 2012· When setting your NOS nitro, start from right to left, at the highest duration then start tapping to the left so that when you land on the boost % you want i.Sand Drag Central • View topic what rear gear ratios,Jan 12, 2013· I changed gear ratio 4 times and transmission ratio once in the first 5 weekends of last year racing trying to maximize on this combo,resulting in the above times (the F2 seems to be very picky about gear ratio). I also built the chassis of both the current 300ft.

As the tire expands your final drive ratio changes. In effect the tire becomes a variable gear and part of your "transmission". Wheelspin-- In drag racing and at Bonneville you are going to have a percentage of wheelspin you are going to have to plan for. This will depend on a lot of factors which have to be determined, mostly through experience.Calculate GEAR, RPM, MPH, TIRE DIAMETER Wallace Racing,Calculate GEAR, RPM, MPH, TIRE DIAMETER. This calculator is for entertainment value only. Not to be used in place of real testing.

ATI's Turbo 400 Drag Racing Transmission. Now available with the award winning ATI T400 SFI Certified SuperCase. 2 and 3 speed versions available with many gear set ratios to choose from. ATI has T400 street rod and drag race transmssions for vehicles making 600 horsepower to 3,000 horsepower!Drag Racing Analyzer PRO Performance Trends,Like its "little brother" the standard Drag Racing Analyzer, it let's you play "what if" with engine power, weather, gear ratios, tire size, driving style, etc. and see the effect on ET, MPH, 60 ft times, tire spin, and much more. "Its like having a drag strip, dyno and chassis shop right in

Nov 22, 2011· george 75 percent of the racers are running from 342 to 410 gear ratios with automatic trannys, any lower and you will tack out the motor before end of track. my k5 is hitting 6k on tack at the end with 456 ratio and i still have 30 -40 feet left. i would do 410 to start.Gears,The pitch of a gear is the distance between equivalent points on adjacent teeth. For two gears to mesh they must have the same pitch. The pitch circle of a gear is an imaginary circle which passes through the point where the teeth touch when one gear meshes with another. The pitch diameter is the diameter of the pitch circle.

Drag Performance Calculator By AssassinRacing Calculate the theoretical 1/8 Mile ET, 1/4 Mile ET, 1/4 Mile Top End Speed, and Ideal 1/4 Mile Gear Ratio for a given application based on the Vehicle Weight (in pounds), Vehicle Horsepower (at the flywheel), RPM through lights (finish line), and Tire Diameter (Height) in Inches.ATI 3-Speed Drag Racing and High Performance,The increase is usually equal to 1 numerically higher gear ratio. A car with a 4.10 rear gear and a standard low gear of 2.52 equals a 10.33 starting line ratio or SLR (2.52 x 4.1). Utilizing the 2.75 gear set equals a 11.30 SLR (4.1 x 2.75).

Gear Ratio Calculator, calculates ratios with gears and tire sizes, Can take input in both imperial and metric formats. for Slot Car Racing Shopping Cart 0 item(s) $0.00,

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