Milodon Chevy and Chrysler Gear Drives

GEAR DRIVE ASSEMBLIES

 

- CHEVY & CHRYSLER - 

For over 40  years, Milodon Gear Drives have been acknowledged as the ultimate in quality, strength and durability whether the use be Top Fuel, Circle Track, Drag Race, Marine or Street. There are lots of gear drives on the market today, many of them are from overseas. None of them can match the American made quality and experience of Milodon.

Even though Milodon Gear Drives are designed for "All Out Competition", they work equally well in application, including Street. When installed properly, these gear drives  will virtually last indefinitely due to the zero wear and their overall brute strength. Cam timing accuracy and consistency are the key to accessing 100% of the cam's available power. A timing chain or an "easy to install" $150 gear drive unit can not provide this. 

Milodon's professionally proven "Fixed Idler Gear" system is capable of maintaining the precise cam timing required to allow the release of this power. Cam timing adjustments are effortless to perform via the two piece cam gear and cam hub assembly that is accessible on the Full Cover Style Assembly through the removable billet cam cover. The adjustment is achieved by changing the position of the cam gear on the cam hub. A simple bolt-on procedure with no offset dowels or keys to mess with. Each movement is detailed on a provided chart which gives the exact position for the desired amount of advance or retard, once top dead center is found. 

A professional style three-gear unit, unlike a four-gear type, does not rob any power from the engine to run. The billet steel gears mounted solidly to the block, will not and can not, allow the timing to vary, unlike a flexible belt or chain. These benefits add up to increased horsepower output and higher RPM potential.


FACT  -  MILODON GEAR DRIVES MAKE HORSEPOWER !!

  • It will make the same more power as when new, virtually indefinitely. Even on the street, it is almost impervious to wear. 
  • Street or Strip, a Milodon fixed idler gear will make more power than a timing chain or a floating idler gear.
  • It will keep the same cam timing you set, whether the engine is on the engine stand or at 10,000 rpm.
  • Fixed idler, steel billet gears can not change, unlike all other flexible chain or belt drives. 

- SMALL BLOCK CHEVY  -  BIG BLOCK CHEVY  -   BIG BLOCK CHRYSLER -

 
Small Block Chevy #12000


Big Block Chevy #12600


Chrysler Big Block Wedge & Hemi #13000


Big Block Chevy Injected / Blown #12700

  • Allows precise camshaft degreeing using Milodon's adjustable bolt pattern cam gear and hub assembly. 

  • Incorporates a full cast aluminum front cover with a removable cam cover that allows quick and easy access to the cam gear for adjustments and cam removal. 

  • Mounts the fixed idler gear solidly into the main cover itself. This fixed idler system will fully compensate for any crank position, even if the block has been severely align bored, without any sacrifices. 

  • Uses positive cam end play adjustment and a three-piece roller bearing behind the cam gear to control cam movement, reduce power-robbing drag and stop block face wear. 

  • NO block machining is required. Hand tools are required to drill and ream the positioning dowel pin hole which, with care, can be done at home. 

  • Available in the standard "flat cover" configuration which uses a stock style water pump or the "injected / blown with fuel pump drive" style that does not use a stock-style water pump. Blown engines will require a fuel pump extension (see that section for a complete listing). 

  • For Small Block Chevys, stock factory and Milodon short pumps fit over the 12000 drive with the hardware provided. Big Block short water pumps will not fit over the 12600 drive without additional spacing.

SMALL BLOCK CHEVY

PART #

SB Chevy (Flat Cover Style) 12000 
SB Chevy (Flat Cover Style) 1984 & Up, Hydraulic Roller Engine  12001 
SB Chevy (Injected/Blown Style) 12250 

BIG BLOCK CHEVY

PART # 
BB Chevy (Flat Cover Style) 1965-90, Mark IV 12600 
BB Chevy (Flat Cover Style) 8.2L, Mark V 12605 
BB Chevy (Flat Cover Style) 8.2L, Gen VI 12606 
BB Chevy (Injected /Blown Style) 1965-90,  Mark IV 12700 
BB Chevy (Injected/Blown Style) 8.2L, Mark V 12705 
BB Chevy (Injected/Blown Style) 8.2L, Gen VI 12706 
BB Chevy (Marine Style) 1965-90, Mark IV 12900 
BIG BLOCK CHRYSLER and HEMI

PART #

Chrysler Hemi/Wedge with 3 bolt cam (Flat Cover Style)   13000 
Chrysler Hemi/Wedge with 3 bolt cam (Injected/Blown Style)   13250 

GEAR DRIVE INSTALL & CAM DEGREE VIDEO
This very professional "HOW TO" video gives clear concise, step by step instructions to install a typical gear drive unit and degree the cam. Video will cover proper setting of the gear lash and correct mounting of the drive assembly. The comprehensive look at cam degreeing shows you how to set your cam to deliver the power you paid for. Buying the correct cam for your application is the first step however to make the intended power the cam must be timed right. Degreeing your cam is a fundamental part of the properly blueprinted engine. 
Cam Degree & Drives Video

14900 



#12960

BILLET FUEL PUMP EXTENSIONS
Precision CNC machined from billet aluminum. Fits all Milodon gear drives, as well as other drives and aluminum front covers, and is required to clear belts, etc. on supercharged applications.
21/2" Extension 
with 3/8" Hex Drive
12950 
41/2" Extension 
with 3/8" Hex Drive
12955 
51/2" Extension 
with 3/8" Hex Drive
12960 
Replacement Shaft for 
21/2" Extension
12975 
Replacement Shaft for 
41/2" Extension
12976 
Replacement Shaft for 
51/2" Extension
12977 


#12970

GEAR DRIVE CONVERSION KITS
Designed to change your existing Milodon gear drive assembly from a carbureted-style (no cam drive capability) to an injected/ blown-style (with a cam driven hex) or vise versa. These complete kits include necessary cam hub, secondary cam cover, all bolts and camshaft end-play control device.
Small Block Chevy #12000-#12250 12570 
Small Block Chevy #12250-#12000 12571 
Big Block Chevy #12700-#12900 12925 
Big Block Chevy #12600-#12700 12970 
Big Block Chevy #12700-#12600 12971 
Chrysler Hemi/Wedge #13000-#13250 13570 
Chrysler Hemi/Wedge #13250-#13000 13571