Tractor Pulley

Lawn Tractor Pulleys?

I want to change the pulleys on my lawn tractor to make it go a bit faster. Currently I have an 8 inch in the rear and a 2.5 in the front. If I make the rear a 3 inch and keep the front a 2.5 will I see a speed increase? I'm not sure whether the front has to be larger or if simply shrinking the rear pulley will show a speed difference.

You would see a dramatic increase in speed if you put a 3" pulley on the back. You would also see a dramatic decrease in torque. With that small a pulley on the back, it would be close to a 1 to 1 ratio with the engine which would probably change your 1st gear into high gear.

Wheel Horse 417 A Tractor Mowing Deck Mule Drive Pulley Guard
Wheel Horse 417 A Tractor Mowing Deck Mule Drive Pulley Guard
$24.99
Time Remaining: 31m
Buy It Now for only: $24.99

Wheel Horse 417 A Tractor Kohler KT17 17hp Engine Pulley
Wheel Horse 417 A Tractor Kohler KT17 17hp Engine Pulley
$34.99
Time Remaining: 32m
Buy It Now for only: $34.99

John Deere 140 H3 Tractor Kohler K321 14hp Engine Flywheel Pulley
John Deere 140 H3 Tractor Kohler K321 14hp Engine Flywheel Pulley
$19.99
Time Remaining: 1h 20m
Buy It Now for only: $19.99

Bolens 1256 Tractor Wisconsin TRA 12D 12hp Engine Flywheel Pulley
Bolens 1256 Tractor Wisconsin TRA 12D 12hp Engine Flywheel Pulley
$24.99
Time Remaining: 3h 4m
Buy It Now for only: $24.99

Bolens 1256 Tractor PTO Rod Pulleys Lever
Bolens 1256 Tractor PTO Rod Pulleys Lever
$29.99
Time Remaining: 3h 4m
Buy It Now for only: $29.99

Variable Speed Pulley Bobcat 38140 38089N Lawn Mower Tractor Parts
Variable Speed Pulley Bobcat 38140 38089N Lawn Mower Tractor Parts
$198.00
Time Remaining: 3h 12m
Buy It Now for only: $198.00

John Deere Drive Belt Idler Double Pulley Arm for Tractors 325 335 345
John Deere Drive Belt Idler Double Pulley Arm for Tractors 325 335 345
$15.00
Time Remaining: 3h 19m
Buy It Now for only: $15.00

Scotts TurfMaster by Noma Lawn Tractor 2 Mower Deck Spindle Pulleys
Scotts TurfMaster by Noma Lawn Tractor 2 Mower Deck Spindle Pulleys
$34.95
Time Remaining: 3h 56m
Buy It Now for only: $34.95

JOHN DEERE 110 ROUND FENDER LAWN  GARDEN TRACTOR TRANSAXLE BELT PULLEY
JOHN DEERE 110 ROUND FENDER LAWN GARDEN TRACTOR TRANSAXLE BELT PULLEY
$0.99
Time Remaining: 3h 57m

JOHN DEERE 110 ROUND FENDER LAWN  GARDEN TRACTOR TRANSAXLE IDLER PULLEY
JOHN DEERE 110 ROUND FENDER LAWN GARDEN TRACTOR TRANSAXLE IDLER PULLEY
$1.99
Time Remaining: 3h 59m

JOHN DEERE LAWN TRACTOR MULE DRIVE ADJUSTMENT PULLEY SPRING
JOHN DEERE LAWN TRACTOR MULE DRIVE ADJUSTMENT PULLEY SPRING
$2.99
Time Remaining: 4h 2m
Buy It Now for only: $6.99

JOHN DEERE 100 LAWN TRACTOR TENSION PULLEY
JOHN DEERE 100 LAWN TRACTOR TENSION PULLEY
$9.99
Time Remaining: 5h 20m
Buy It Now for only: $9.99

Vintage 1966 Gravely LI L LS L8 Walk Behind Garden Tractor Engine Belt Pulley
Vintage 1966 Gravely LI L LS L8 Walk Behind Garden Tractor Engine Belt Pulley
$9.99
Time Remaining: 5h 33m

CUB CADET RIDING MOWER LAWN TRACTOR IDLER PULLEY ASSEMBLY
CUB CADET RIDING MOWER LAWN TRACTOR IDLER PULLEY ASSEMBLY
$15.95
Time Remaining: 6h 35m
Buy It Now for only: $15.95

Allis Chalmers 716H Tractor Drive Idler Pulley
Allis Chalmers 716H Tractor Drive Idler Pulley
$24.99
Time Remaining: 7h 27m
Buy It Now for only: $24.99

JOHN DEERE 110 LAWN TRACTOR PULLEY COVER
JOHN DEERE 110 LAWN TRACTOR PULLEY COVER
$14.77
Time Remaining: 7h 33m
Buy It Now for only: $14.77

PULLEY FITS CASTEL TC92 TC102 TC122 RIDE ON TRACTOR
PULLEY FITS CASTEL TC92 TC102 TC122 RIDE ON TRACTOR
$23.78
Time Remaining: 8h 41m
Buy It Now for only: $23.78

Bolens Duratrac Garden Tractor Lawn Mower 5120H Front PTO Sheave Pulley
Bolens Duratrac Garden Tractor Lawn Mower 5120H Front PTO Sheave Pulley
$19.99
Time Remaining: 14h 58m
Buy It Now for only: $19.99

Craftsman 917276905 Lawn Tractor Motor Pulley Part  405097
Craftsman 917276905 Lawn Tractor Motor Pulley Part 405097
$24.99
Time Remaining: 18h 52m
Buy It Now for only: $24.99

MASSEY FERGUSON 626 REAR ENGINE RIDING LAWN TRACTOR PULLEY DECK ATTACH BRACKETS
MASSEY FERGUSON 626 REAR ENGINE RIDING LAWN TRACTOR PULLEY DECK ATTACH BRACKETS
$19.99
Time Remaining: 20h 16m
Buy It Now for only: $19.99

LAWN TRACTOR FLAT IDLER PULLEY AYP SEARS ROPER PART  175820 STEEL
LAWN TRACTOR FLAT IDLER PULLEY AYP SEARS ROPER PART 175820 STEEL
$11.95
Time Remaining: 1d 1h 36m
Buy It Now for only: $11.95

John Deere 212 Tractor Mowing Deck Belt Tension Pulley
John Deere 212 Tractor Mowing Deck Belt Tension Pulley
$19.99
Time Remaining: 1d 2h 35m
Buy It Now for only: $19.99

John Deere 212 Tractor Mowing Deck Belt Tension Pulley
John Deere 212 Tractor Mowing Deck Belt Tension Pulley
$19.99
Time Remaining: 1d 2h 35m
Buy It Now for only: $19.99

John Deere RX75 Lawn Tractor Deck Pulley Part  AM107904
John Deere RX75 Lawn Tractor Deck Pulley Part AM107904
$31.57
Time Remaining: 1d 2h 42m
Buy It Now for only: $31.57

Toro PULLEY 7 0190 Lawn Tractor 1968 Models 57101 57201
Toro PULLEY 7 0190 Lawn Tractor 1968 Models 57101 57201
$30.00
Time Remaining: 1d 3h 10m
Buy It Now for only: $30.00

15hp Tecumseh OHV15 Engine Drive Pulley Ariens YT15H Lawn Tractor
15hp Tecumseh OHV15 Engine Drive Pulley Ariens YT15H Lawn Tractor
$14.95
Time Remaining: 1d 4h 7m
Buy It Now for only: $14.95

511 302 M1 MF12 MASSEY FERGUSON TENSION SPRING DECK BELT FLAT IDLER PULLEY ARM
511 302 M1 MF12 MASSEY FERGUSON TENSION SPRING DECK BELT FLAT IDLER PULLEY ARM
$7.99
Time Remaining: 1d 4h 26m
Buy It Now for only: $7.99

SEARS SUBURBAN ST 16 TRANS AXLE DRIVE PULLEY BELT GUARD OH160 TECUMSEH ENGINE
SEARS SUBURBAN ST 16 TRANS AXLE DRIVE PULLEY BELT GUARD OH160 TECUMSEH ENGINE
$10.99
Time Remaining: 1d 4h 26m
Buy It Now for only: $10.99

JOHN DEERE 400 420 430 TRACTOR FRONT PTO PULLEY  SHAFT M48661 AM35538 AM35537
JOHN DEERE 400 420 430 TRACTOR FRONT PTO PULLEY SHAFT M48661 AM35538 AM35537
$225.00
Time Remaining: 1d 4h 48m
Buy It Now for only: $295.00

SMALL PULLEY ADJUSTER from MTD HUSKEE LAWN TRACTOR
SMALL PULLEY ADJUSTER from MTD HUSKEE LAWN TRACTOR
$14.99
Time Remaining: 1d 6h 30m
Buy It Now for only: $14.99

MTD Troy Bilt Tractor Mower Deck Double Pulley Part 756 1202 New
MTD Troy Bilt Tractor Mower Deck Double Pulley Part 756 1202 New
$48.98
Time Remaining: 1d 17h 42m
Buy It Now for only: $48.98

Wheel Horse B 80 Tractor 36 Mowing Deck Belt Tension Pulley
Wheel Horse B 80 Tractor 36 Mowing Deck Belt Tension Pulley
$19.99
Time Remaining: 1d 17h 46m
Buy It Now for only: $19.99

Wheel Horse B 80 Tractor Transaxle Pulley
Wheel Horse B 80 Tractor Transaxle Pulley
$19.99
Time Remaining: 1d 17h 46m
Buy It Now for only: $19.99

SEARS CRAFTSMAN TRACTOR TRANSMISSION PULLEY
SEARS CRAFTSMAN TRACTOR TRANSMISSION PULLEY
$18.00
Time Remaining: 1d 18h 59m
Buy It Now for only: $18.00

Sears Suburban 10xl Tractor Custom Pulley Belt Guard h132
Sears Suburban 10xl Tractor Custom Pulley Belt Guard h132
$7.99
Time Remaining: 1d 19h 2m
Buy It Now for only: $7.99

Allis Chalmers 620 Power Max Tractor Lift Cable Pulleys
Allis Chalmers 620 Power Max Tractor Lift Cable Pulleys
$24.99
Time Remaining: 1d 19h 12m
Buy It Now for only: $24.99

Allis Chalmers 620 Power Max Tractor Drive Input Pulley
Allis Chalmers 620 Power Max Tractor Drive Input Pulley
$24.99
Time Remaining: 1d 19h 12m
Buy It Now for only: $24.99

1976 Case 210 Tractor Starter Generator Pulley
1976 Case 210 Tractor Starter Generator Pulley
$17.99
Time Remaining: 1d 20h 40m
Buy It Now for only: $17.99

1976 Case 210 Tractor Pulley Shaft
1976 Case 210 Tractor Pulley Shaft
$8.99
Time Remaining: 1d 20h 40m
Buy It Now for only: $8.99

1976 Case 210 Tractor Idler Pulley
1976 Case 210 Tractor Idler Pulley
$4.49
Time Remaining: 1d 20h 40m
Buy It Now for only: $4.49

CASE 444 Tractor 44 Mowing Deck Mandrel Pulleys
CASE 444 Tractor 44 Mowing Deck Mandrel Pulleys
$34.99
Time Remaining: 1d 20h 56m
Buy It Now for only: $34.99

DECK MULE DRIVE PULLEY SET 1964 1967 JOHN DEERE 110 112 GARDEN TRACTOR  1019
DECK MULE DRIVE PULLEY SET 1964 1967 JOHN DEERE 110 112 GARDEN TRACTOR 1019
$22.99
Time Remaining: 1d 22h 44m
Buy It Now for only: $22.99

LAWN TRACTOR FLAT IDLER PULLEY REPLACES HUSQVARNA  BLUEBIRD 539 110311
LAWN TRACTOR FLAT IDLER PULLEY REPLACES HUSQVARNA BLUEBIRD 539 110311
$7.95
Time Remaining: 1d 23h 12m
Buy It Now for only: $7.95

Craftsman 18HP LT4000 Lawn tractor Engine PTO stack double drive belt pulley
Craftsman 18HP LT4000 Lawn tractor Engine PTO stack double drive belt pulley
$19.99
Time Remaining: 2d 40m
Buy It Now for only: $19.99

MTD RIDING LAWN MOWER GARDEN TRACTOR ENGINE PULLEY REPLACES OEM 756 04196A
MTD RIDING LAWN MOWER GARDEN TRACTOR ENGINE PULLEY REPLACES OEM 756 04196A
$46.99
Time Remaining: 2d 1h 47m
Buy It Now for only: $46.99

Sears SS 16 Tractor Drive Idler Pulley
Sears SS 16 Tractor Drive Idler Pulley
$17.99
Time Remaining: 2d 1h 54m
Buy It Now for only: $17.99

Bolens 1050 Tractor Engine Pulley Belt Guide
Bolens 1050 Tractor Engine Pulley Belt Guide
$19.99
Time Remaining: 2d 2h 21m
Buy It Now for only: $19.99

Bolens 1050 Tractor Engine Pulley Belt Guide
Bolens 1050 Tractor Engine Pulley Belt Guide
$19.99
Time Remaining: 2d 2h 21m
Buy It Now for only: $19.99

Bolens 1050 Tractor Wisconsin TRA 10D 10hp Engine Starter Pulley
Bolens 1050 Tractor Wisconsin TRA 10D 10hp Engine Starter Pulley
$24.99
Time Remaining: 2d 2h 22m
Buy It Now for only: $24.99

briggs stratton 14 hp garden tractor riding lawnmower engine pulley vertcal
briggs stratton 14 hp garden tractor riding lawnmower engine pulley vertcal
$19.99
Time Remaining: 2d 2h 42m
Buy It Now for only: $19.99

HTF David Bradley Tractor 5 8 Engine 2 Groove Aluminum Flat Belt Hit Miss Pulley
HTF David Bradley Tractor 5 8 Engine 2 Groove Aluminum Flat Belt Hit Miss Pulley
$67.00 (17 Bids)
Time Remaining: 2d 3h 40m

David Bradley Tractor Speed Changer Pulley And Parts
David Bradley Tractor Speed Changer Pulley And Parts
$50.00
Time Remaining: 2d 4h 28m

Allis Chalmers B 112 Tractor Drive Adaptor Pulley
Allis Chalmers B 112 Tractor Drive Adaptor Pulley
$24.99
Time Remaining: 2d 5h 1m
Buy It Now for only: $24.99

JOHN DEERE STX30 LAWN TRACTOR PULLEY
JOHN DEERE STX30 LAWN TRACTOR PULLEY
$3.99
Time Remaining: 2d 5h 32m
Buy It Now for only: $3.99

CASE Ingersoll 448 Tractor Mowing Deck Mule Drive Pulleys
CASE Ingersoll 448 Tractor Mowing Deck Mule Drive Pulleys
$34.99
Time Remaining: 2d 6h 50m
Buy It Now for only: $34.99

Kubota TG1860 1860 Tractor Idler Pulley
Kubota TG1860 1860 Tractor Idler Pulley
$24.99
Time Remaining: 2d 7h 40m
Buy It Now for only: $24.99

Kubota TG1860 1860 Tractor Idler Pulley
Kubota TG1860 1860 Tractor Idler Pulley
$24.99
Time Remaining: 2d 7h 40m
Buy It Now for only: $24.99

Ariens GT14G Tractor Hydraulic Oil Pump Pulley
Ariens GT14G Tractor Hydraulic Oil Pump Pulley
$17.99
Time Remaining: 2d 8h
Buy It Now for only: $17.99

Sears Tractor SS16 Motor Drive Pulley
Sears Tractor SS16 Motor Drive Pulley
$54.99
Time Remaining: 2d 8h 10m
Buy It Now for only: $54.99

Bolens HT 23 Large Frame Garden Tractor Front PTO Pulley Sheave
Bolens HT 23 Large Frame Garden Tractor Front PTO Pulley Sheave
$30.00
Time Remaining: 2d 8h 36m
Buy It Now for only: $30.00

Bolens 1476 Large Frame Garden Tractor Front PTO Pulley Sheave
Bolens 1476 Large Frame Garden Tractor Front PTO Pulley Sheave
$30.00
Time Remaining: 2d 8h 37m
Buy It Now for only: $30.00

JOHN DEERE 165 160 170 175 180 185 130 LAWN TRACTOR ENGINE PULLEY
JOHN DEERE 165 160 170 175 180 185 130 LAWN TRACTOR ENGINE PULLEY
$9.99
Time Remaining: 2d 10h 15m
Buy It Now for only: $9.99

Yamaha YT 3600 lawn tractor mower deck pto pulley
Yamaha YT 3600 lawn tractor mower deck pto pulley
$85.00
Time Remaining: 2d 18h 35m
Buy It Now for only: $85.00

Yamaha YT 3600 lawn tractor mower deck spindle belt pulley
Yamaha YT 3600 lawn tractor mower deck spindle belt pulley
$18.00
Time Remaining: 2d 18h 49m
Buy It Now for only: $18.00

Yamaha YT 3600 lawn tractor mower deck spindle belt pulley
Yamaha YT 3600 lawn tractor mower deck spindle belt pulley
$19.00
Time Remaining: 2d 18h 52m
Buy It Now for only: $19.00

Cub Cadet 1730 Lawn Tractor Idler Pulley Part  756 3033
Cub Cadet 1730 Lawn Tractor Idler Pulley Part 756 3033
$14.34
Time Remaining: 2d 20h 13m
Buy It Now for only: $14.34

SNAPPER RIDING LAWN MOWER TRACTOR 5 3 4 OD SPINDLE PULLEY REPLACES 7076398
SNAPPER RIDING LAWN MOWER TRACTOR 5 3 4 OD SPINDLE PULLEY REPLACES 7076398
$44.99
Time Remaining: 2d 21h 42m
Buy It Now for only: $44.99

SNAPPER REAR ENGINE 11HP VERTICAL ENGINE RIDING LAWN TRACTOR SPINDLE PULLEY
SNAPPER REAR ENGINE 11HP VERTICAL ENGINE RIDING LAWN TRACTOR SPINDLE PULLEY
$19.99
Time Remaining: 2d 22h 30m
Buy It Now for only: $19.99

John Deere Lawn Tractor M86397 PULLEY drive  free shipping
John Deere Lawn Tractor M86397 PULLEY drive free shipping
$43.99
Time Remaining: 2d 23h 8m
Buy It Now for only: $43.99

Simplicity lawn tractor 1673109ASM LH mower deck PULLEY free shipping
Simplicity lawn tractor 1673109ASM LH mower deck PULLEY free shipping
$20.99
Time Remaining: 2d 23h 12m
Buy It Now for only: $20.99

Wheel Horse Raider 12 Tractor 42 Mowing Deck Idler Pulley
Wheel Horse Raider 12 Tractor 42 Mowing Deck Idler Pulley
$24.99
Time Remaining: 2d 23h 22m
Buy It Now for only: $24.99

Wheel Horse 1276 Tractor Idler Pulley Arm Bracket 1076 855 1056 656 606 875 703
Wheel Horse 1276 Tractor Idler Pulley Arm Bracket 1076 855 1056 656 606 875 703
$11.95
Time Remaining: 2d 23h 43m