New

This category is a listing of all products designated as 'NEW'.


12464482	Lower Manifold, 502 Ram Jet
This aluminum lower intake manifold is used on Ram Jet 502 P/N 12497323.



12464484	Upper Manifold, 502 Ram Jet
This aluminum upper intake manifold is used on Ram Jet 502 P/N 12497323.



12480050	Medium Deck Height Truck Racing Block
This medium deck height iron block was designed for "Truck Pro Stock Racing" with the following features:
Technical Notes: 8.700" deck height that can be machined to 8.500" Has standard Chevrolet bell housing bolt pattern Delivered with 3.900" cylinder bore and can be bored to 4.190" Uses jesel style timing belt system (4.953 cam to crank) Has no lifter holes or cylinder head bolt 2.300 main bearing diameter and 2.250" cam bearing All other diameters are same as block P/N 24502650


12480130	12480130 — LS1 or LS6 Exhaust Header Flange
This steel exhaust header flange is designed to make header for ASA race cars of street rods.



12480146	Splayed-Valve Cylinder Head ("Rough Machined")
"The splayed-valve cylinder head has 240cc intake runners." The splayed-valve casting has a .240" minimum port wall thickness that permits extensive modifications by cylinder head specialist seeking even more airflow. The intake valves are angled 16º to the deck surface and tilted (splayed) 4º . The exhaust valves are 11º , with a 4º tilt. This cylinder head has symmetrical intake and exhaust ports and can accommodate a 2.20" diameter intake valve and a 1.65" exhaust valve. Its nominal combustion chamber volume is 45cc, although the actual volume will depend on the seats and valves installed. It is the same as cylinder head P/N 24502517 except as follows: No head bolt holes, dowel holes, intake bolt holes, valve guide or seat machining, spark plug holes, valve spring seat machining, pushrod holes, or rocker bar machining. This gives maximum deck surface and the end surfaces are machined. (The difference between the rough machined P/N 12480146 and the semi-machined P/N 12480147 is the valve guide and spark plug holes are machined on P/N 12480147.)
Technical Notes: Does not include seats or valve guides. The intake valve location moves the valve .050 closer to the bore center line than the earlier P/N 10185040. The following items are available from GM for the installation of this cylinder head: Rocker arm stand P/N 10185041, Intake gasket P/N 10185042, Rocker cover gasket P/N 10185043, and Rocker cover P/N 10185045. The intake manifold and remaining valvetrain components will have to be purchased in the aftermarket or be fabricated.


12480147	12480147— Splayed-Valve Cylinder Head ("Semi-Finished")
"The splayed-valve cylinder head has 240cc intake runners." The splayed-valve casting has a .240" minimum port wall thickness that permits extensive modifications by cylinder head specialist seeking even more airflow. The intake valves are angled 16º to the deck surface and tilted (splayed) 4º. The exhaust valves are 11º, with a 4º tilt. This cylinder head has symmetrical intake and exhaust ports and can accommodate a 2.20" diameter intake valve and a 1.65" exhaust valve. Its nominal combustion chamber volume is 45cc, although the actual volume will depend on the seats and valves installed. It is the same as cylinder head P/N 24502517 except as follows: No head bolt holes, dowel holes, intake bolt holes, valve seat machining, valve spring seat machining, pushrod holes, or rocker bar machining. This gives maximum deck surface and the end surfaces are machined. (The difference between the rough machined P/N 12480146 and the semi-machined P/N 12480147 is the valve guide and spark plug holes are machined on P/N 12480147.)
Technical Notes: Does not include seats or valve guides. The intake valve location moves the valve .050 closer to the bore center line than the earlier P/N 10185040. The following items are available from GM for the installation of this cylinder head: Rocker arm stand P/N 10185041, Intake gasket P/N 10185042, Rocker cover gasket P/N 10185043, and Rocker cover P/N 10185045. The intake manifold and remaining valvetrain components will have to be purchased in the aftermarket or be fabricated.


12480157	Block, Bow-Tie Sportsman "350 Main Size"
This iron block is fully CNC machined from the H-D 10051184 casting. It has siamesed cylinder walls, cast nodular caps, four bolts on all five main caps; the outer bolts on the three center main caps are splayed 20 degrees. Grade 8 bolts secure the caps. It features priority main oiling and 9.025" deck height. The blocks come finished bored at 4.117" and the maximum recommended bore is 4.150". This block features a two-piece rear main seal; "350" main size (2.45"). It features lifter bore heights (.842"), same as P/N 24502503.
Technical Notes: It may be necessary to clearance top of lifter bores with some roller lifters. The block requires 2" O.D. cam bearings at all five locations (P/N 12370843 set).


12480159	Block, Bow-Tie Sportsman "400 Main Size"
This iron block is fully CNC machined from the H-D 10051184 casting. It has siamesed cylinder walls, cast nodular caps, four bolts on all five main caps; the outer bolts on the three center main caps are splayed 20 degrees. Grade 8 bolts secure the caps. It features priority main oiling and 9.025" deck height. The blocks come finished bored at 4.117" and the maximum recommended bore is 4.155". This block features a two-piece rear main seal; “400” main size (2.65"). It features lifter bore heights (.842"), same as P/N 24502503.
Technical Notes: It may be necessary to clearance top of lifter bores with some roller lifters. The block requires 2" O.D. cam bearings at all five locations (P/N 12370843 set).


12486610	Service Manual 502 Ram Jet
This service manual is for the installation of the 502 Ram Jet P/N 12497323.



12486611	Service Manual 350 Ram Jet
This service manual is for the installation of the 350 Ram Jet P/N 12495515.



12497697	Serpentine Accessory Belt Drive System "Deluxe Without Air"
This deluxe serpentine belt drive system without air conditioner includes all the components to install on small-block Chevrolet engines. The bolts, nuts, spacers and braces are included with the following major items: 10055800 Secondary air injector pump bracket 10129569 Idler belt pulley bracket 88894005 Water pump kit 10055880 Water pump pulley 10055879 Crankshaft pulley 10463172 Generator assembly (reman.) 12117361 Generator connector (with lead) 10055798 Drive belt tensioner assembly 10085752 Belt (fan, water pump, A/C pump, and generator) 10105212 Generator & power ateering bracket 26010328 Power steering pump 14102096 Power steering pump pulley



12497698	Serpentine Accessory Belt Drive System "Deluxe With Air"
This deluxe serpentine belt drive system with air conditioner includes all the components to install on small-block Chevrolet engines. The bolts, nuts, spacers and braces are included with the following major items: 10055800 Secondary Air Injector pump bracket 1134344 Air compressor assembly, (CR4) 10129569 Idler belt pulley bracket 88894005 Water pump kit 10055880 Water pump pulley 10055879 Crankshaft pulley 10463172 Generator assembly (reman.) 12117361 Generator connector (with lead) 10055798 Drive Belt Tensioner Assembly 10085752 Belt (fan, water pump, A/C pump, and generator) 10105212 Generator & power steering bracket 26010328 Power steering pump 14102096 Power steering pulley



12497869	Serpentine Accessory Belt Drive System "Base with Brackets and Bolts"
This base serpentine belt drive system includes bolts, nuts, bracket, braces, pulleys, and water pump to install on small-block Chevrolet engine. Does not include the air compressor, alternator, power steering pump. Listed below are the major components: 10055800 Seconcary air injector pump bracket 10129569 Idler belt pulley bracket 10055880 Water pump pulley 10055879 Crankshaft pulley 88894005 Water pump kit 12117361 Generator connector (with lead) 10055798 Drive belt tensioner assembly 10105212 Generator & power steering bracket 14102096 Power steering pump pulley



12551366	"Gen 3" 6.0L Bare Block
This "Gen 3" cast iron 6.0L block is used on 1998-2001 pickup trucks.
Technical Notes: Use with casting P/N 12561168.


12560801	12560801 — LS6 "Gen 3" Performance Cylinder Head
This cylinder head debuted on the 2001 LS6 Vortec engine. It offers the same overall package configuration as LS1 cylinder heads. However, the combustion chamber has been downsized approximately 3cc for more compression. Also, the exhaust port has been redesigned and features a raised floor and smaller port volume. This head is characterized by a "D" shaped exhaust opening at the exhaust flange.



12560950	LS6 "Gen 3" Production Performance Camshaft
This camshaft is original equipment in LS6 Vortec engines. It features .525" intake and exhaust lift, 217 degree exhaust duration at .050", 207 degree intake duration at .050", and 116 degree lobe centers.



12561166	LS1 or LS6 Corvette Bare Block
This aluminum block is used on th 2001 LS6 Corvette.
Technical Notes: Use with casting P/N 12561168.


12565117	LS6 "Gen 3" Performance Valve Spring
These valve springs are intended for heavy duty applications in Gen III Vortec small-block engines. This spring is original equipment in LS6 engines.



14011043	Cylinder Sleeve (Standard)
These replacement 4.00" diameter centrifugally cast cylinder liners can be installed in aluminum Bow Tie small-block and V6/90° engines. They are available in standard and two oversize diameters.
Technical Notes: These sleeves are for early design Chevrolet V8 block with casting #366299 and V6 90 P/N 14011069. They will not fit current V8 and V6 cases P/N 10134399, 10134400, 10134351, 10134371, 10185075, or 24502495.


25534321	Cylinder Head (LS1 Showroom Stock Racing)
This uses a production LS1 cylinder head (casting P/N 12559853) and has .035" machined off the deck surface to decrease it to 63cc chamber size. This raises the compression to 10.8:1. They also do a performance valve job with CNC porting with high lift valve springs P/N 12565117. Includes valves and springs.



25534333	Cylinder Case (V6 90 Degree CNC Machined)
This "CNC Machined" V6 90 degree iron block was designed for sprotsman racing. Same as block 1018551 except it has nodular iron main bearing caps with grade eight bolts.