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Chevrolet - GM, GMPP, AND CHEVROLET CYLINDER HEAD PARTS | |
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This page list the GM, GMPP, and Chevrolet cylinder head parts that are in the GMPP catalog and more. Some have been discontinued
but we still show them for information purposes and we may add some that were never shown in their catalog because we feel they should have been shown. There are some
that we show here that GM took out of their catalog just to make room for something else but we will still continue to show it. Keys - gmhead, gmheadpart |
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WEB SITE NAVIGATION INFORMATION | |
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| GM and Chevrolet part prices are in the Price & Parts search. Keys are to be used with the Price & Parts Search. Enter a Key, part number, GM, SC, or a key word, like 502, into the Price & Parts search to see if we have it on our site. Use GM for a list of both GM and GMPP parts. Use SC for a list of all Chevrolet exclusive parts. Aftermarket company prices are on downloadable Price Sheets or on their pages. The Page Search is for searching the pages of our Web site. More information on this is on our help page. |
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CYLINDER HEAD NAVIGATION | |
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GM, GMPP, AND CHEVROLET CYLINDER HEAD PARTS | |
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Chevrolet carries both GM and GMPP cylinder head parts.
Some heads have “(Pic)” under the Link column. This indicates that there is a
picture that you can see for that head. If you click on (Pic) you will see it and a separate page will open showing you the picture.Chevrolet also carries a number of other Aftermarket company heads like Edelbrock and World Castings. If you don’t see what you are looking for, call us and ask about it, using our toll free 1-800 number.
Head parts are being moved from the Price List to here. Prices are in the Price & Part Search now. Use the key gmhead to list all the parts and heads or gmheadpart to list just the parts. This page is being worked on at this time to add parts. |
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SMALL-BLOCK CYLINDER HEAD BOLTS, STUDS, DOWELS, AND WASHERS | |
| Part # | Description | Link |
| 00585927 |
Cylinder Head Dowel Pin For all V6/90° and small-block V8s. 5/16” diameter by 9/16” long. |
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| 03942410 | Head Stud Nut 7/16 x 20, hex-head, 1038 steel, 100% Magnaflux inspected. |
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| 10051155 | Hardened Washer .45” ID x .750” OD, for Phase 6 and raised runner aluminum heads. |
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| 10168525 | Long Head Bolt with Washer 7/16-14 x 3-3/16”, for Corvette aluminum head. 14 required. |
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| 10168526 | Medium Head Bolt with Washer 7/16-14 x 3-1/16”, for Corvette aluminum head. 4 required. |
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| 10168527 | Short Head Bolt with Washer 7/16-14 x 1-3/4”, for Corvette aluminum head. 16 required. |
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| 12366568 | Cylinder Head Nut Kit This quality 7/16” x 20 hex head kit includes 16 pieces of P/N 03942410 nut. These nuts are manufactured from 1038 steel and are all magnifluxed inspected. This kit is used with aftermarket head studs. This quality nut kit includes 16 of P/N 03942410 6-point nuts. They are 7/16-20 and made of 1038 steel. They are used on all 396, 427, 454, and 502ci production engines. For single service replacement use P/N 03942410. Technical Note: It requires two kits for engine application. |
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| 12366569 | Cylinder Head Nut Kit This quality 7/16” x 20 point nut includes 16 pieces of P/N 14044866. These nuts are manufactured from 4037 steel and are all magnifluxed inspected. This kit is used with aftermarket head studs. This aircraft quality nut kit includes 16 of P/N 14044866 12-point nuts. They are 7/16-20 and made of 6304 steel. They can be used on all 396, 427, 454, and 502ci engines. For single service replacement use P/N 14044866. Technical Note: It requires two kits for engine application. |
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| 12495499 | Bolt Kit, V8 Cylinder Head This kit includes all head bolts to complete the installation of iron or aluminum cylinder heads. These high quality bolts include thread sealer. Technical Note: This kit includes the following bolts : 14 of P/N 10168525, four of P/N 10168526, and 16 of P/N 10168527. |
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| 14011040 | Cylinder Head, Hardened Washer .45” ID x .778” OD |
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| 14044866 | Head Stud Nut 7/16 x 20, 12-point head for limited clearance, 4037 steel, 100% Magnaflux inspected. |
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SMALL-BLOCK CYLINDER HEAD GASKETS | |
| Part # | Description | Link |
| 03830711 |
Steel Shim Head Gasket Recommended for stock and mildly modified engines with 4.00” cylinder bores. Compressed thickness is .026”. |
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| 10105117 | Composition Head Gasket (Cast Iron or Aluminum Head) This composition head gasket with stainless steel faces is recommended for stock and mildly modified engines with 4.00” cylinder bores. Its compressed thickness is .028”. |
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| 10159455 | Composition Head Gasket This composition head gasket with stainless steel jacket is used on Chevrolet V8 302 - 400 CID engines with bore diameters from 4” to 4 1/8”. The gasket has a compressed thickness of .039”. |
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| 12363763 | Special Competition Head Gasket This heavy-duty composition head gasket for iron or aluminum heads is teflon coated and has pre-flattened steel fire rings (this feature reduces head and deck surface galling). This gasket features a 4.200” bore for bow tie, 400 small blocks and aluminum blocks. This gasket does not have steam holes required for the production 400 S/B. It does have revised coolant hole pattern (this reduces coolant temperatures between the center bores). This head has compressed thickness of .038” with volume of 8.9cc and this does not require retorquing. |
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| 12557236 | Composition Head Gasket For Corvette production aluminum cylinder heads. Compressed thickness is .051”. This gasket's stainless steel fire rings prevent galvanic action between the aluminum head and cast iron block. (This gasket is used on 350 HO engines.) (Can be used on cast iron or aluminum heads.) |
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| 14096405 | Composition Head Gasket This composition gasket has stainless steel on one side and graphite on the other side This gasket has a compressed thickness of .028”. |
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SMALL-BLOCK CYLINDER HEAD VALVE SEATS | |
| Part # | Description | Link |
| 12484788 | Intake Valve Seat This valve seat fits fast burn cylinder head P/N 12464298. The diameter on this seat is 2.149” OD and 1.85” ID with a plus or minus .0005” and it is .312” thick with plus or minus of .002”. Technical Note: The material iron alloy JP200 and heat treat to RC 33-39. |
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| 12484789 | Exhaust Valve Seat This exhaust valve seat fits fast burn cylinder head P/N 12464298. The diameter on this seat is 1.688” OD and 1.330” I.D. with a plus or minus .0005”, and it is .3125” thick with plus or minus of .0025”. Technical Note: The material iron alloy JP200 and heat treat to RC 33-99. Small-block cylinder head gaskets are available in a variety of materials and thicknesses to suit different applications. When selecting a head gasket, keep in mind the engine’s intended usage and the minimum piston-to-head clearance required. (One gasket per part number.) |
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SMALL-BLOCK CYLINDER HEAD INTAKE VALVES | |
| Part # | Description | Link |
| 00366285 |
2.05” Stainless Steel Intake Valve Standard stem diameter, swirl polished. This valve has a flat face to maximize compression and a 10° back angle to enhance airflow. Technical Note: Intake valve seats in Chevrolet cylinder heads must be reworked for 2.05” valves. The valve stem groove for an O-ring seal is deleted. |
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| 03849814 | 2.02” Intake Valve Standard stem diameter, swirl polished. |
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| 12363753 | 2.02” High Performance Intake Valve This 2.02” high performance intake valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome plated stems to reduce wear and galling with hardened tips to withstand high loads, and they feature a single groove design. |
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| 12363755 | 1.94” High Performance Intake Valve This 1.94” high performance intake valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome plated stems to reduce wear and galling with hardened tips to withstand high loads, and they feature a single groove design. |
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| 12363757 | 2.00” High Performance Intake Valve This 2.00” high performance intake valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome-plated stems to reduce wear and galling with hardened tips to withstand high loads. |
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| 12555331 | 2.00” Intake Valve These 2.00” intake valves are used in the 1996 350 LT4 Corvette. |
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| 14075641 | 1.94” Intake Valve Standard stem diameter. |
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SMALL-BLOCK CYLINDER HEAD EXHAUST VALVES | |
| Part # | Description | Link |
| 12480171 |
1.60” Exhaust Valve Standard stem diameter. This valve is swirl polished, and has an aluminized face. |
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| 10088106 | 1.50” Exhaust Valve Standard stem diameter. |
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| 12363754 | 1.60” High Performance Exhaust Valves This 1.60” high performance exhaust valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome-plated stems to reduce wear and galling with hardened tips to withstand high loads, and they feature a single groove design. This performance exhaust valve has tapered exhaust stems to reduce oil consumption and galling at high temperatures. |
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| 12363756 | 1.50” High Performance Exhaust Valves This 1.50” high performance exhaust valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome plated stems to reduce wear and galling with hardened tips to withstand high loads, and they feature a single groove design. This performance exhaust valve has tapered exhaust stems to reduce oil consumption and galling at high temperatures. |
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| 12363758 | 1.55” High Performance Exhaust Valves This 1.55” high performance exhaust valve is constructed from stainless steel to improve strength and corrosion resistance. These valves have undercut stems to improve flow and reduce weight, chrome plated stems to reduce wear and galling with hardened tips to withstand high loads, and they feature a single groove design. This performance exhaust valve has tapered exhaust stems to reduce oil consumption and galling at high temperatures. |
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| 12551313 | 1.55” Exhaust Valves These 1.55” exhaust valves are used in the 1996 350 LT4 Corvette. |
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SMALL-BLOCK CYLINDER PUSHROD GUIDEPLATES | |
| Part # | Description | Link |
| 03973418 |
Pushrod Guideplate (Cast Iron Head) Hardened production and Bow Tie cast iron cylinder heads with screw-in studs. Technical Note: These guide plates should not be used when using slotted tip rockers. Pushrod slots should be .325”. |
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| 10111771 | Pushrod Guideplate (Corvette Aluminum Head) This non-hardened guideplate is used with Corvette aluminum cylinder head assembly P/N 10185086 and 5.7-liter HO engine assembly P/N 10185072. Technical Note: Use with self-aligning rocker arm P/N 10089648. These guide plates should not be used when using slotted tip rockers. |
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| 14011051 | Pushrod Guideplate This hardened steel guideplate is used with aluminum Bow Tie V6/90° cylinder heads with screw-in rocker arm studs. Technical Note: Use on cylinders #1, 2, 5 and 6. Grind guideplate to clear valve cover hold-down bolts. This guideplate is identified by the stamped number “05.” |
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SMALL-BLOCK CYLINDER HEAD VALVE SEALS | |
| Part # | Description | Link |
| 00460483 |
Valve Stem Seal Used on all ZZ Series 350 HO engines (16 required per engine). |
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| 10212810 | LT4 Valve Stem Seal These valve stem seals are used on 1996 350 LT4 engines and special performance LT4 design service heads. |
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| 12511890 | Valve Stem Seal Kit This late model V8 seal kit includes 8 P/N 460483 intake seals, 8 exhaust seals, and 16 P/N 10214034 oil stem seals. Technical Note: Check for seal-to-guide interference with high-lift camshafts. This seal kit is for 11/32” diameter valve stems. |
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| A Note about valve stem seals - There are two different types of valve stem seals positive and umbrella | ||
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SMALL-BLOCK CYLINDER HEAD VALVE SPRING RETAINERS (CAPS) | |
| Part # | Description | Link |
| 00330586 | Aluminum Valve Spring Retainer For valve spring P/N 00330585. |
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| 00366245 | Titanium Valve Spring Retainer For valve spring P/N 00366282. |
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| 10045007 | Valve Spring Retainer Used on all ZZ3 Series 350 HO engines. Technical Note: When converting ZZZ/ZZ1 or ZZ2 series engines to the ZZ3 series cap, you must remove valve spring shield and add cap P/N 10045007, seal P/N 0060483, and spacer P/N 0185066 (1 each). |
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| 10168424 | Valve Spring Retainer Used on 1992-1993 Corvette LT1production engines. This lightweight cap is to be used with valve spring P/N 10206040. |
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| 10212808 | LT4 and ZZ4 Valve Spring Retainer These lightweight valve spring caps are used on 1996 LT4 Corvette and ZZ4 engines as well as the special service only heads P/N 12556463. These are the retainers in the LT4 HOT cam kit. |
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| 12495492 | LT4 and ZZ4 Valve Spring Retainer Kit This valve spring cap kit which includes 16 of P/N 10212808 caps, is used on all 5.7L LT4 engines. These are light weight caps to be used with valve spring kit P/N 12495494, and key kit P/N 12495503. |
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| 12495493 | 350 HO Valve Spring Retainer Kit This valve spring cap kit, which includes 16 of P/N 14003974 caps, is used on all 350 HO engines. These are base V8 engine caps to be used on most V8 and V6 engines. |
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| 14003974 | Steel Valve Spring Retainer This valve spring retainer is used for valve springs P/N 03911068, P/N 10134358, and P/N 03927142. This retainer is 13/32” in diameter, and is stamped with an “A”. Used on ZZZ, ZZ1, ZZ2 350 HO engines and 350HO 300 HP engines. |
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CYLINDER HEAD VALVE SPRINGS | |
| Part # | Description | Link |
| SBC Valve Springs | ||
| 00330585 | Heavy Duty Valve Spring This dual valve spring is recommended for competition camshafts with .560” maximum valve lift. Technical Note: Spring pockets on V6/60º cylinder heads must be machined to fit this spring. Umbrella-type valve stem seals are recommended. Use with aluminum valve spring retainer P/N 00330586 and valve seal kit P/N 10132715. Dual spring, 1.379” OD, 140# @1.75” presure at installed height, 1.15” solid height, 325 average rate of pounds per inch. |
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| 00366282 | Valve Spring This is a special racing “Dual Spring with Damper” valve spring. Technical Note: Dual spring with damper, 1.525” OD, 1.26” solid height,128# @ 1.26” pressure at installed height, 406 average rate of pounds per inch. Use with retainer P/N 366254 and after market seal. |
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| 03911068 | Valve Spring This is the service spring for the 300 HP 350 ci crate engine that ended production in January 1999. This is a great spring for a mild performance engine. Technical Note: Single spring with damper with 1.241” OD and 1.15” solid height, 80# @ 1.70” pressure at installed height, 267 average rate of pounds per inch. Use with retainer P/N 14003974 and seal kit P/N 10132715. |
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| 03927142 | Valve Spring This is a special performance valve spring for racing camshaft P/N 3927140. This is a good spring for mild racing engines. Technical Note: Single spring with damper with 1.273” O.D. and 1.16” solid height. The pressure at installed height is 110# @ 1.70” with 358 the average rate of pounds per inch. Use with retainer P/N 14003974 and seal kit P/N 10132715. |
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| 10134358 | Valve Spring This is a special performance valve spring used in ZZZ-ZZ1-ZZ2-ZZ3 350 create engines. This is a good spring for mild to high performance engines. Technical Note: Single spring with damper, 1.273” OD, and 1.16” solid height. The pressure at installed height is 110# @ 1.70" with 356 the average rate of pounds per inch. Made of Chrome Silicon Steel with color code of orange. Use with retainer P/N 14003974 and seal kit P/N 10132715. |
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| 10206040 |
Valve Spring Used on 1992-1993 Corvette LT1production engines. Technical Note: Single spring, 1.30” OD, 85# @ 1.78” pressure at installed height, 1.26” solid height, 373 average rate pounds per inch. Use with retainer P/N 10168424. |
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| 12495494 | Valve Spring Kit This high performance single valve spring has an outer diameter of 1.34”. The kit includes 16 P/N 12551483 valve springs. See Valve Spring Chart for further information. This spring was for 1996 LT4 Corvette engines. Technical Note: Not recommended for cam lift over .525”. |
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| 12495495 | Valve Spring Kit This high performance dual valve spring has an outer diameter of 1.379”. The kit includes 16 P/N 330585 valve springs. See Valve Spring Chart for further information. |
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| BBC Valve Springs | ||
| 03916464 | Valve Spring This high performance valve spring has an outer and inner spring with a damper; was originally used in the 427/454 LS7, ZL1, and L-88 Corvettes. Good for mild performance big blocks Technical Note: Dual spring, 1.487” OD, and 1.10” solid height. The pressure at installed height is 116# @ 1.88” with 317 the average rate of pounds per inch. Use with valve spring retainer P/N 3879613. |
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| 03970627 | Valve Spring This high performance valve spring has an outer and inner spring; was originally used in the 454 LS6 Chevelle's in the 1970’s. Good for mild performance big blocks. Technical Note: Dual spring, 1.487” OD, and 1.28” solid height. The pressure at installed height is 105# @ 1.88” with 450 the average rate of pounds per inch. Use with valve spring retainer P/N 3964264. |
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| 03989354 | Valve Spring This high performance valve spring has an outer and inner spring with a damper. Used with mild race camshaft. Technical Note: Dual spring, 1.538” OD, and 1.26” solid height. The pressure at installed height is 128# @ 1.90” with 330 the average rate of pounds per inch. Use with valve spring retainer P/N 3989353. |
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| 12366567 | Valve Spring Kit These heavy-duty spring assemblies are made of aircraft quality steel and recommended for big block competition engines. The outer coil diameter is 1.525”. The spring yields 128 pounds seat pressure at an installed height of 1.70”, and this spring coil binds at 1.26”. It’s rated at 406 pounds/inch. Technical Notes: This kit includes 16 springs of P/N 366282, and use P/N 366282 for single spring replacement. Use steel retainer P/N 366254. This spring requires a small diameter aftermarket PC-type valve stem seal. |
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SMALL-BLOCK CYLINDER HEAD PLUGS | |
| Part # | Description | Link |
| 12480171 |
Plug Kit, Intake Port SB2.2 This intake port plug kit is used on all SB2.2 cylinder heads. It includes four plugs per kit. Technical Note: This is a threaded plug size 8 an O-ring. |
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