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         When ordering a GM 2.5L head you will find that the casting nuber is the same on many different heads.  The location of the boolt hloes are different, as seen above, the length of the valves and the size of the valve stems ate different even on the same casting.  You and your customer must check and make sure you have ordered the correct head before installing it on the car.  

 2.5L R (552) Wide bolt Pattern R                                HCG 2.5-552                            $295.00          call for availability

2.5L R (702) Wide                                                         HCG 2.5-702                            $295.00          call for availability

2.5L R (373) Wide                                                         HCG 2.5-373                            $295.00          call for availabilit

2.5L R & U (767) 1984-1986  (U) is narrow                 HCG 2.5-767 R                        $295.00           

2.5L R & U (767) 1984-1986  (U) is narrow                 HCG 2.5-767 U                        $295.00          

2.5L R & U (808) 1987-1988 Shorter valver 8mm      HCG 2.5-808 R                        $295.00           

2.5L R & U (808) 1987-1988 Shorter valver 8mm      HCG 2.5-808 U                        $295.00           

2.5L R & U (808) 1990 up has 11/32 valve                  HCG 2.5-496 R                       $295.00           

2.5L R & U (808) 1990 up has 11/32 valve                  HCG 2.5-496 U                        $295.00            

2.5L R & U (655) 1988 8mm vakves                           HCG 2.5-655 R                        $295.00            

2.5L R & U (655) 1988 8mm vakves                           HCG 2.5-655 U                        $295.00           

             Note on rear wheel drive cars the core pluge are located on the other end and must be swapped.

Casting Ending IN

767 $295.00 808 $295.00 496 $295.00 655 $295.00

Engine Code R or U

Code R Code U

Casting Number not Listed

          3.8L V6 Buick 182391402, 2136, 2261, 4781               HCG 3.8                                   $265.00          call for availability of casting #

One are Two

one $265.00 Two $500.00

Casting Number

2136 4781 8134 0619 2119 0619 3425 4250 4723 1402

casting number not listed

     

     4.3L Chevrolet                                                               HAG 4.3                                   $265.00         call for availability of casting #

                     Casting # 245, 248, 268, 683, & 769 Early

                     Casting # 103, 890, 772, 181, 209, 256, 742, 113, & 064 Late

                     Casting # 53480, 55865, 051174, 1174, 88640, & 88840 Roller cam turbo

                     Note sum of the later modle have injection ports in head and the casting is the same number as those that do not.

Port Injection

With Port Inj $265.00 W/o Port Inj. $265.00

Casting Early

245 248 268 769

Casting Number Late

103 890 772 181 209 256 742 113 064

Casting # Rollar Turbo

53480 55865 051174 1174 88640 88840

Your Casting Number not Listed

           5.7L GM Vortec                                                            HCG 5.7-V                                $355.00            

                     Casting #10239906  #1258062  1996-2006

Casting Number

1258062 $355.00 10239906 $355.00

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