In addition to all of the standard items that come with the GEX engines, we also offer the following options to build it your way.
Autocraft Hi-Ratio Rockers
Available in 1.25:1 and 1.4:1 ratios. Increase your cam's lift without effecting duration. Hi-Ratio Rockers feature needle shaft bearings, H.D.shafts and special valve adjusting screws.
CM 21-2102
Autocraft 1.25 Rockers, Set
$ 341.00
CM 21-2104
Autocraft 1.40 Rockers, Set
$ 311.88
CM 21-2120
Replacement Adjusting Screw, (ea.)
$ 32.11
Autocraft Roller Rockers
Available in 1.25:1 and 1.40:1 ratios, these rockers feature a Roller Tip for precise valve adjustment and less friction. For Racing use ONLY.
CM 21-2106
Autocraft 1.25 Roller Rockers, set
$ 530.00
CM 21-2108
Autocraft 1.40 Roller Rockers, set
$ 530.00
Chromoly Valve Spring Retainers
Strength of Chromoly Steel machined to accommodate Single or Dual Springs. A must with any Hi-Lift Cam.
TK 4015
Chromoly Spring Retainers, set of 8
$ 44.28
High Performance Valve Springs
A must for any performance application to control valve action. Dual Valve Springs (MH 4042) offer improved control and reliability up to 6000 RPMs, featuring same outer spring with a small internal spring.
MH 4040
H.P. Valve Springs - Single, set of 8
$ 38.70
MH 4042
H.P. Valve Springs - Dual, set of 8
$ 64.75
High Rev Valve Spring Kit
Complete Kit for preparing your heads for Hi-Lift Cam. kits come complete with compatible H.P. Single or Dual Springs, Lightweight Aluminum Retainers and Hardened Valve Locks.
MH 4045
Hi Rev Valve Spring Kit - Single, Kit
$ 71.75
MH 4060
Hi Rev Valve Spring Kit - Dual, Kit
$ 103.95
Also see Cylinder Head Options.
Prices listed on this page are to substitute these items on a long block engine. For outright prices of the above items alone, see individual parts pages.
Also see 
