Pulleys and Mandrels

Single Groove Pulley Two Groove BBF Pulley Product images may differ from actual product appearance. Fixed Crank Pulleys 6061 T6 billet aluminum fixed pulley with either one or two grooves for V belts. 2" diameter hub, which allows for crank triggers with an opening of more than 2" without machining. 2 Groove Pulley only available for BBF.
Fixed Crank Pulley
CP100A	Small Block Chevy, Single Groove (single bolt style)	$65.00
CP101A	Big Block Chevy, Single Groove (single bolt style)	$65.00
CP103A	Fixed Crank Pulley, Single Groove, Small Block Ford	$65.00
CP104	Fixed Crank Pulley, Two Groove, Big Block Ford	$75.00
CP105A	Fixed Crank Pulley, Single Groove, Buick	$70.00
CP106A	Fixed Crank Pulley, Single Groove, Pontiac Photo	$75.00
CP107A	Fixed Crank Pulley, Single Groove, Mopar (big and small block)	$75.00
CP108A	Fixed Crank Pulley, Single Groove, Big Block Oldsmobile	$95.00

Single Groove Pulley bolts to balancer Product images may differ from actual product appearance. Crank Alternator Pulleys 6061 T6 billet aluminum fixed pulley with one groove for V belt. 5" diameter to drive alternator. Center hole accepts 2" OD crank mandrel or 2" OD CP Series Vacuum Pump Pulley through the center. The 4 bolt pattern is for bolting to back face of single groove pulley to utilize GZMS alternator kit. It also can bolt to face of balancer using the 3 bolt pattern to accomodate other alternator brackets.
Fixed Crank Pulley
CP99A	Chevy and GZMS bolt pattern, Single Groove, bolts to balancer style for Alternator, 5" diameter.	$45.00

Crank Mandrels

6061 T6 Aluminum 3-bolt Crankshaft Mandrel with 1" industry standard shaft size attaches to front of balancer and locates with a lip on the balancer for perfect concentricity. Utilizes a 1/8" standard keyway slot which allows you to use this mandrel with pulleys from many different manufactors, including GZ Motorsports.

All mandrels are designed to be attached to the balancer using the pulley mounting holes located on the balancer. This allows the crank bolt and washer to remain in place as required by aftermarket balancer manufactures. All mandrels come with a 4" long spacer so that each mandrel pulley can be accurately located on the mandrel by cutting each to length and an end cap and bolt. The mandrels can be shortened as desired as the threaded 7/16 center hole is 2" deep. Each mandrel is of length to allow a mandrel pulley to be at a maximum distance of 4.5" from the back side mounting face, or face of balancer. All mandrels are compatible with crank trigger wheels either located on the balancer, or mandrel side.

Available for Small Block Chevy (SBC), Big Block Chevy (BBC), Small Block Ford (SBF), BIg Block Ford (BBF), Small Block Mopar (SBM) and Big Block Mopar (BBM) engines.

Small Block Chevy Crank Mandrel w/spacer and end cap

The SBC mandrel uses flat head countersunk allen head screws to both hold the mandrel in place as well as center it on the balancer so that a crank trigger may be installed under it. The 7/16" threaded hole may be drilled to 7/16" to allow installation of an extra long crank bolt if desired, GZ Motorsports can do this upon request.

Big Block Chevy Crank Mandrel w/spacer and end cap

The BBC Mandrel uses the three bolt holes to mount the mandrel and a register to center it in the mandrel in the recess in the balancer. A crank trigger may be installed on the front of the mandrel or on the balancer with the mandrel installed over it. The mandrel may be drilled to 1/2" for use with a long crank bolt if desired, GZ Motorsports can do this upon request.

Small Block Ford Crank Mandrel w/spacer and end cap

The SBF Mandrel uses either the 4 bolt ford pattern or the 3 bolt Ford pattern to mount the mandrel to the balancer and register to center the mandrel in the recess in the balancer. A crank trigger may be installed under or on the front face of the mandrel.

Big Block Ford Crank Mandrel w/spacer and end cap

The BBF Mandrel uses either the 4 bolt ford or 3 bolt Chevy pattern to mount the mandrel and the back is recessed to accept the BBF hub on the balancer, which centers the mandrel. A crank trigger with a 3 bolt Chevy pattern may be mounted to the balancer or to the face of the mandrel

Small or Big Block Mopar Crank Mandrel w/spacer and end cap

The BBM/SBM Mandrel uses the 6 bolt pattern and uses flat head countersunk allen head bolts. A 3 bolt Chevy bolt pattern crank trigger may be bolted to the front face of the mandrel $117.00

Crank Mandrel Pulleys All mandrel pulleys are made of 6061-T6 machined aluminum, are single groove V belt, are provided with a 1/8" keyway and have 2-1/4" set screws to fix location on the mandrel.			Product images may differ from actual product appearance.
Crank Mandrel Pulleys
PN	Description	Price
CMP299	3" Dia Crank Mandrel Pulley, 1" Mandrel Shaft, 1/8 Keyway	$45.00
CMP300	3 1/2" Dia Crank Mandrel Pulley, 1" Mandrel Shaft, 1/8 Keyway	$45.00
CMP301	4 1/2" Dia Crank Mandrel Pulley, 1" Mandrel Shaft, 1/8 Keyway	$50.00

Gilmer Belt Crank Pulleys 28 tooth Gilmer crank pulley for 1" diameter crank mandrels with 1/8" keyway. For use with 1/2" wide Gilmer Belt and is the correct pulley to use with our VPPC402 (46 cog) for 64% of engine speed at the vacuum pump.			Product images may differ from actual product appearance.
Vacuum Pump Pulley
PN	Description	Price
CMPG300	1/2" wide, 28 Tooth Gilmer Drive Crank Pulley for 1" mandrel, 1/8" keyway	$55.00

V-Belt Vacuum Pump Pulleys 6061 T6 machined aluminum for a single V belt and will work on GZMS, OEM air pumps and Moroso Vacuum pumps with 6mm coarse threaded bolts.			Product images may differ from actual product appearance.
Vacuum Pump Pulley
VPP401	4 1/2" Vacuum Pump Pulley	$50.00
VPP402	5 1/2" Vacuum Pump Pulley	$56.00
VPP404	6 1/2" Vacuum Pump Pulley	$61.00

Serpentine Belt Style Vacuum Pump Pulleys 7.5" 6061 T6 machined aluminum for a Serpentine belt and will work on GZMS, OEM air pumps, Moroso and Aerospace pumps with 6mm coarse threaded bolts.			Product images may differ from actual product appearance.
Vacuum Pump Pulley
PN	Description	Price	Qty
VPP403	7.5" 6 groove Serpentine Vacuum Pump Pulley	$115.00

Gilmer Belt Vacuum Pump Pulleys
Vacuum Pump Pulley
PN	Description	Price
VPPG401	36 tooth Gilmer pulley for vacuum pumps. Fits GZMS, OEM air pumps and Moroso pumps with 6mm coarse threaded bolts. For use with a 28 tooth Mandrell Pulley on most applications.	$63.00
VPPG402	46 tooth Gilmer 5.4" diameter pulley for vacuum pumps. Fits GZMS, OEM air pumps and Moroso pumps with 6mm coarse threaded bolts. For use with a 28 tooth Mandrell Pulley on most applications.	$68.00

LSX Idler Mounts, Combo Serpentine Idler & Gilmer Pulleys

LSX Serpentine Idler Pully with Integral Gilmer Vacuum Pump Pulley

16 Cog Gilmer Vacuum Pump Pulley with 6 Rip Serpentine combination pulley for use with LSX engines with the GZ Motorsports Sportsman and Pro Vacuum Pumps. Works on all LSX motors such as the Y Body Corvette, Gen 4 F Body Camaro, Pontiac GTO & G8, C & K Body LS Trucks, CTS-V Cadillac and Z Body Gen 5 2010 & Up Camaros.

LSX Aluminum Mechanical Tensioner Pulley Mount

LSX Aluminum Mechanical Tensioner Pulley Mount designed to work with TP100 Combo 6 Rib & Gilmer Pulley, will also accept stock size Pulley. Works on all LSX motors such as the Y Body Corvette, Gen 4 F Body Camaro, Pontiac GTO & G8, C & K Body LS Trucks, CTS-V Cadillac and Z Body Gen 5 2010 & Up Camaros.