Performance Cam Gears

When you’re looking to create more power at higher RPMS you need to increase the overlap in your camshaft of your 1981 GMC Jimmy. Once you’ve upgraded to a performance camshaft, next up is your cam gears. Performance cam gears help tighten the lobe separation angle (LSA) between the intake cam and exhaust cam. Adjustable cam gears allow you to alter the timing the of the valves opening, ultimately allowing more airflow into the cylinder which in turn results in more power and torque made. Sport Compact Warehouse is your premier source for Performance Cam Gears. Reach out to one of our experienced representatives today if you have any questions and we will help you make a more informative decision.

If you’re looking for even greater durability and timing accuracy, consider converting your chain and sprockets to a gear drive or belt drive arrangement. A gear drive setup has a cam and crank gear with one or two idler gears. The possibility of chain stretch is eliminated, for consistent cam timing, plus you get a characteristic blower-like gear whine. Belt drives offer infinite adjustability for accurate cam timing, plus the belt absorbs crankshaft harmonics and vibration. Offered for both wet and dry installation, belt drives also deliver increased durability while creating less frictional loss.

Although most of our performance cam timing offerings are for OHV applications, there’s no need to feel neglected if you have an OHC or DOHC engine. Here you’ll find CNC machined cam gears for both timing chains and belts with laser-etched timing marks for precise cam timing adjustment. These gears are made from high grade billet aluminum for light weight and durability, and hard anodized to prevent wear. We also have heavy-duty chain tensioners for selected applications that eliminate chain slack even under low oil pressure conditions, and two-piece timing covers that allow easy cylinder head removal.

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EDELBROCK 7890
Please Note:

Some images might not represent the actual product

EDELBROCK 7890 Camshaft Gear Drive
for 1981 GMC Jimmy ALL

$351.73

Save: $45.88
Sale Price:

$305.85

Estimated Ship Date: Today

Free DelieveryFree Ground Shipping
In Stock - 2 New In Stock
EngineFit NotesFitment Notes
1981 GMC Jimmy ALL equipped with
5.7L V8,
5.0L V8
 
Engine Timing Camshaft Gear
Not Recommended For Use Above 7000 RPM Or w/Knock Sensors~ Not Legal For Use On Pollution Controlled Vehicles~ For Racing Or Engine Swaps
 
1981 GMC Jimmy ALL equipped with
5.7L V8,
5.0L V8 Engine Timing Camshaft Gear
Not Recommended For Use Above 7000 RPM Or w/Knock Sensors~ Not Legal For Use On Pollution Controlled Vehicles~ For Racing Or Engine Swaps
,
ELGIN E-1091-P
Please Note:

Some images might not represent the actual product

ELGIN E-1091-P Engine Camshaft Rear
for 1981 GMC Jimmy ALL

$148.75

Save: $19.40
Sale Price:

$129.35

Estimated Ship Date: Today

In Stock - 3 New In Stock
EngineFit NotesFitment Notes
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV
 
Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
 
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV
 
Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
 
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV
 
Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
 
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV
 
Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
 
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Sport Utility 2-Door
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV
 
Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Coupe Sport Utility 2-Door
 
1981 GMC Jimmy ALL equipped with
5.7L V8 Gas OHV,
5.0L V8 Gas OHV Engine Camshaft
CAM LIFT .336 INT./.336 EXH.,
VALVE LIFT .504 INT./.504 EXH. @ 0.50 DUR. 256Deg INT./264Deg EXH., OPENS 29Deg BTC INT./63Deg BBC EXH., CLOSES 47Deg ABC INT./21Deg ATC EXH., LASH .026 INT./.026 EXH., RANGE 250Deg TO 265Deg.
Coupe Sport Utility 2-Door
,
PROFORM 66917C
Please Note:

Some images might not represent the actual product

PROFORM 66917C Engine Timing Camshaft Gear Drive Kit
for 1981 GMC Jimmy ALL

$120.59

Save: $15.73
Sale Price:

$104.86

Estimated Ship Date: Today

In Stock - 47 New In Stock
EngineFit NotesFitment Notes
1981 GMC Jimmy ALL equipped with
5.7L V8,
5.0L V8
 
Hi-Performance Under Cover Model
Fits SB Chevy Engine
 
1981 GMC Jimmy ALL equipped with
5.7L V8,
5.0L V8 Hi-Performance Under Cover Model
Fits SB Chevy Engine