JRGMPARTS_Tampa_Florida_GM_Performance_Parts_GM_Crate_Engines_GM_Restoration_Parts5

Chevy Small block V8
Valves Springs and Shims


 

JRGMPARTS.com
What’s HOT

12484788Steel_Valve_Spring_Retainer
Intake Valve Seat
 • Heat-treated, iron alloy intake valve seat
• Seat diameter is 2.149" O.D. and 1.85" I.D. +/- 0.0005"
• 0.312" thick +/- 0.002"

12484789
Exhaust Valve Seat
• Heat-treated, iron alloy exhaust valve seat
• Seat diameter is 1.688" O.D. and 1.330" I.D. +/ - 0.0005"
• 0.3125" thick +/- 0.0025"

10212809Titanium_Valve_Spring_Retainer
LT4 Valve Spring Shim
• Lightweight shims as used on 1996 LT4 Corvette special LT service heads P/N 12363287, and Fast Burn heads
• Use with spring P/N 12551483

10185066
Spring Shim
• Used on ZZ3 series 350 HO engines
• Spacer is 1.35" O.D. x 0.561" I.D. x .050" thick

3731058
Spring Shim
• 55/64" I.D. x 1-15/16" O.D. x 0.030" thick

3875916
Spring Shim
• 55/64" I.D. x 1-31/64" O.D. x 0.015" thick

3891521
Spring Shim
• 55/64" I.D. x 1-31/64" O.D. x 0.065" thick

460483
Valve Stem Seal
• Used on all ZZ series 350 HO engines
• Sold individually; 16 required per engine

10212810
LT4 Valve Stem Seal
• Used on LT4 heads and GM Performance Parts head assemblies P/N 25534421, 25534431, 12363287 and 12464298

 

.

12511890
Valve Stem Seal Kit
• Late-model V-8 seal kit for 11/32" diameter valve stems
• Includes eight intake seals, eight exhaust seals, and 16 oil stem seals Check for seal-to-guide interference with high-lift cams.

10241744
Valve Spring Retainer
• Used on 350 HO, 350 Ram Jet and HT383

12495493
Valve Spring Retainer Kit
• Kit of 16 P/N 14003974 caps as used on ZZZ, ZZ1, ZZ2, 350/300 HP, and 350/290 HP engines
• Base caps for most V-8 and V-6 engines
• 1-13/32" diameter retainer for springs P/N 3911068 and P/N 3927142

10045007
Valve Spring Retainer
• For all ZZ3 series engines

Note:
When converting ZZZ, ZZ1 or ZZ2 engines to ZZ3 series cap, valve spring shield must be removed and add cap P/N 10045007, seal P/N 460483, and spacer P/N 10185066.

12495492
T4 Valve Spring Cap Kit
• Kit for 5.7L LT4 engines
• Includes 16 P/N 10212808 lightweight retainers
• Use with spring kit P/N 12495494 and key kit P/N 12495503
• Used on ZZ4, Fast Burn, LT4, and iron Vortec Bowtie heads

19169661
Heavy Duty Vortec Valve Spring Retainer
• Fits Fast Burn and Vortec Bowtie cylinder heads
• Designed for circle track racing

330586
Aluminum Valve Spring Retainer
• For valve spring P/N 330585

366254
Titanium Valve Spring Retainer
• For valve spring P/N 366282

12495503
Valve Spring Key Kit
• Kit includes 32 keys of P/N 24503856 for 11/32" valve stems
• Use on all small-block V-8 engines

ROCKER ARMS

Rocker_Arm_KitA. 12495490
Rocker Arm Kit, 1.5 Ratio (Set of 16)
• Self-aligning, high-quality rockers have a nominal 1.5:1 ratio
• Includes 16 stamped steel rockers with pivot balls and nuts
• Use P/N 10089648 for single service part. For 3/8" studs.
Does not fit LS Series engines. Not recommended for mechanical lifter camshafts.

Roller_Rocker_Arm_SetAluminum Roller Rocker Arm 3/8" Studs
These roller rocker arms are similar to the rockers used in the 1996 Corvette LT4 engine, except the trunnions have been machined for early-model 3/8" rocker studs. The arms are selfaligning with improved stiffness and accommodate up to 0.575" valve lift. Choose from 1.5:1 and 1.6:1 ratios below.

12370838
Roller Rocker Arm Set, 1.5:1 Ratio (not shown)
• Set of 16, 3/8" stud 1.5:1 ratio roller rockers
• Use P/N 12367345 for single service part

12370839
Roller Rocker Arm Set, 1.6:1 Ratio (not shown)
• Set of 16, 3/8" stud 1.6:1 ratio roller rockers
• Use P/N 12367346 for single service part

Note:
When using a high lift camshaft, check valve spring coil bind, retainer-to-seal clearance, and piston-to-valve clearance. Check for adequate pushrod clearance when using on cast iron heads. It may be necessary to remove valve cover drippers for proper rocker arm clearance. P/N 12370839 cannot be used on ZZ3 engines with orange valve springs.

12367347
Adjuster Nut for Roller Rocker Arm (not shown)
• 3/8" adjustment nut
• Used on both aluminum rocker arm kits P/N 12370838 and P/N 12370839

88961233
"Kool Nut" Rocker Arm Kit (not shown)
• Special rocker arm nuts are used on GM circle track engines
• Contains 16 pieces

Roller_Rocker_ArmAluminum Roller Rocker Arm 7/16" Studs
These roller rocker arms are for 7/16" studs and are CNCmachined from aluminum alloy. The bearings and fulcrum have an extra-wide design for load distribution and are lubricated with pressurized oil. The roller tip axle is made from 4130 steel, and the roller tip is machined and ground from 8620 steel. Bowtie logo is machined into each rocker. Choose from 1.5:1 and 1.6:1 ratios below.

B. 12361321
Roller Rocker Arm Set, 1.5:1 Ratio
• Set of 16, 7/16" stud 1.5:1 roller rocker arms
• Use P/N 12361328 for single service part

12361322
Roller Rocker Arm Set, 1.6:1 Ratio (not shown)
• Set of 16, 7/16" stud 1.6:1 roller rocker arms
• Use P/N 12361329 for single service part

Note:
These aluminum rockers will not work with standard-height valve covers. When using a high lift camshaft, check valve spring coil bind, retainer-to-seal clearance, and piston-to-valve clearance. Check for adequate pushrod clearance when using on cast iron heads. It may be necessary to remove valve cover drippers for proper rocker arm clearan

|Home James Rivard GM Parts| |GM Performance Parts| |GM Parts| |GM Accessories| |Restoration Classic GM Parts| |About Us|

9740 Adamo Drive (SR60) - Tampa, FL 33619
***Prices may change without notice. Not liable for wrong prices or misinformation.***
Please contact our Webmaster with questions or comments. © Copyright 2008 James-Rivard, Inc. All rights reserved.