Port Cylinder Head

dated
OEM_GM_3748770_Cylinder_Heads_1958_Corvette_283_Dated_Feb_58_No_Porting_58_X_X58_01_eku

OEM GM 3748770 Cylinder Heads 1958 Corvette 283 Dated Feb 58 No Porting 58 X X58

This is a pair of original GM 3748770 cylinder heads. To my knowledge, the 3748770 heads were reserved for 1958 Corvette applications only. These heads have casting dates of B 4 8 and B 11 8 as shown. These dates decode as February 4th and 11th, 1958. These are also known as 58X or X58 heads do to the external cast "X 58" below the exhaust ports. These are very hard to find factory 1958 high performance heads. These heads are in good condition overall. Both heads recently has the valves and springs removed and were cleaned and magnafluxed for cracks by Santa Cruz Auto Parts in Santa Cruz, CA.…
Read More
GM_343772_NOS_BBC_Oval_Port_Bare_SINGLE_Cylinder_Head_Dated_F_18_1981_01_soxz

GM 343772 NOS BBC-Oval Port Bare SINGLE Cylinder Head, Dated F-18-1981

GM 343772 BB Chevy Oval Port Cast Iron, New-Old-Stock. BARE Cylinder Head, SINGLE. The free listing tool. The item "GM 343772 NOS BBC-Oval Port Bare SINGLE Cylinder Head, Dated F-18-1981" is in sale since Monday, August 28, 2017. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "terry_rosebush_motorsports" and is located in East Jordan, Michigan. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France,…
Read More
GM_6272292_BBC_Oval_Port_BARE_Cast_Iron_Cylinder_Heads_Dated_F_1_2_1972_01_zb

GM 6272292 BBC Oval Port BARE Cast Iron Cylinder Heads, Dated F-1/2-1972

GM 6272292 BB Chevy Oval Port Cast Iron Bare Cylinder Heads, Pair. 402-454ci Heads, Dated: F-1/2-1972, No Hardware. The free listing tool. The item "GM 6272292 BBC Oval Port BARE Cast Iron Cylinder Heads, Dated F-1/2-1972" is in sale since Tuesday, September 5, 2017. This item is in the category "eBay Motors\Parts & Accessories\Vintage Car & Truck Parts\Engines & Components\Cylinder Heads & Parts". The seller is "terry_rosebush_motorsports" and is located in East Jordan, Michigan. This item can be shipped worldwide. Part Brand: General Motors Manufacturer Part Number: 6272292
Read More
1966_Corvette_427_425HP_L72_Cylinder_Head_3873858_GM_Rect_Port_Dated_J_1_5_01_ogjx

1966 Corvette 427 425HP L72 Cylinder Head 3873858 GM Rect. Port Dated J 1 5

1966 Corvette 427 / 425HP L72 Cylinder Head #3873858 / GM Rect. Port, Dated J 1 5. This is a clean looking head, it has been ported on the intake and exhaust, and appears to be set up for 2.25" intake and 1.88" exhaust valves. The intake bowl has been opened up below the seat. I haven't magnufluxed the head, but did a thorough magnified inspection with high intensity light. It looks good, along with all threaded holes. The casting date of Oct. 1st, 1965 is very early. The item "1966 Corvette 427 425HP L72 Cylinder Head 3873858 GM Rect. Port Dated J 1 5" is in sale since Friday,…
Read More