Cylinder Heads

Single cylinder head from 1967 Mercury Cougar with non smog 289 engines, 289-2V and 289-4V all the same. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 54-55 cc's. With stock pistons, these heads will net an approximate compression ration of 9.3:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C6OE-M or C6OE-6090-M.These weigh...

Single cylinder head from 1968 Mercury Cougar 289 engines without smog. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 61.7-64.7 cc's. With stock pistons, these heads will net an approximate compression ration of 8.7:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C8OE and "289".*Note - These low compression heads are not...

Single cylinder head from 1967 Mercury Cougar with California smog 289 engines, 289-2V and 289-4V all the same. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 54-55 cc's. With stock pistons, these heads will net an approximate compression ration of 9.3:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C6OE-M. *Note - These...

Single cylinder head from 1968 Mercury Cougar 302-2V engines without smog. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 61.7-64.7 cc's. With stock pistons, these heads will net an approximate compression ration of 8.7:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C8OE-J and "302" and "2-V".*Note - These low compression heads...

Single cylinder head from 1968 Mercury Cougar 302-4V engines without smog. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 52-55 cc's. With stock pistons, these heads will net an approximate compression ration of 9.5:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C8OE-D and "302" and "4-V".Current casting dates include: 7G25,...

Single cylinder head from 1970-73 Mercury Cougar with H code 351C-2V engines. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.04 and 1.65 inch valves, and the chambers measure out at 78.2 cc's. These are considered 'Open Chamber Heads'. With stock pistons, these heads will net an approximate compression ration of 9.5:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common D0AE-J. 2V in the...

Single cylinder head from 1972 Mercury Cougar with Q code 351C-4V engines. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.19 and 1.71 inch valves, and the chambers measure out at 75.4 cc's. These are considered 'Open Chamber Heads'. With stock pistons, these heads will net an approximate compression ration of 8.6:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common D1ZE-6090-GA. 4V in...

Single cylinder head from 1969 Mercury Cougar H or M code 351W engines, 351-2V and 351-4V all the same. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.84 and 1.54 inch valves, and the chambers measure out at 60-62 cc's. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common C9OE-6090-A.These weigh 53 lbs. each, and cannot be combined with other items unless shipping truck freight. ...

Single cylinder head from 1970 Mercury Cougar H code 351W engines, 351-2V. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 1.84 and 1.54 inch valves, and the chambers measure out at 60-62 cc's. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common D0OE-6090-C. 1970 351 Windsor engine, not to be confused with the 351 Cleveland engine from the same year.These weigh 53 lbs. each, and cannot be...

Single cylinder head from 1966 Ford with 390-4V engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. This is a GT cylinder head with 14 drilled and tapped holes for exhaust manifolds. These weigh 48 lbs. each, and cannot be combined with other items...

Single cylinder head from either a 1968 X code 390-2V or 1969 Mercury Cougar with 390-4V or 390-IP engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1 (9.5:1 with X code). Basic cylinder head number is 6090. This is a GT cylinder head with 14 drilled and tapped exhaust bolt holes....

Single cylinder head from 1966 Ford with 390-4V engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. These cylinder heads are factory drilled and tapped for thermactos smog tubes. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. This is a GT cylinder head with 14 drilled and tapped exhaust...

Single cylinder head from 1967 Mercury Cougar with 390-4V engine with California thermactor smog ports. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. This is a GT cylinder head with 14 drilled and tapped exhaust bolt holes. Current...

Single 390GT cylinder head for a 1968 S code 390-4V engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. These are the GT exhaust manifolds with 14 drilled and tapped exhaust bolt holes. This cylinder head has 4 drilled and tapped, thermactor...

The W code Cougar 427 GTE used these heads on a side oiler rotating assembly with a hydraulic cam and Medium Riser aluminum intake - the so called "PI" C7AE version. 427 cylinder heads that have the J's have provision for 14 bolt exhaust manifolds. Low Riser 427 heads use 2.09" / 1.66" valves. Included is a set of machined used valves (16 total)  The C8AE-6090-J heads were also used on the prototype 50 Mustang fastbacks used at the 1968 Winter Nationals - the so - called "135 series"...

Single cylinder head from 1968 Mercury Cougar 302-2V engines with smog. Sold as a core, needs thorough cleaning and rebuilding prior to use. The 'with smog' cylinder heads would have been found on 3 and 4 speed manual transmission cars. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 61.7-64.7 cc's. With stock pistons, these heads will net an approximate compression ration of 8.7:1. Basic cylinder head number is 6090. Several Ford casting numbers...

Single cylinder head from 1968 Mercury Cougar 302-4V engines with smog. Sold as a core, needs thorough cleaning and rebuilding prior to use. The 'with smog' cylinder heads would have been found on 3 and 4 speed manual transmission cars. They came drilled and tapped for thermactor smog systems. Typically this cylinder head has 1.78 and 1.45 inch valves, and the chambers measure out at 52-55 cc's. With stock pistons, these heads will net an approximate compression ration of 9.5:1. Basic cylinder...

Single cylinder head from 1970-71 Mercury Cougar with M code 351C-4V engines. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.19 and 1.71 inch valves, and the chambers measure out at 62.8 cc's. These are considered 'Closed Chamber Heads'. With stock pistons, these heads will net an approximate compression ration of 10.7:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common D0AE-N. 4V in the...

Single cylinder head from 1973 Mercury Cougar with Q code 351C-4V engines. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.04 and 1.66 inch valves, and the chambers measure out at 75.4 cc's. These are considered 'Open Chamber Heads'. With stock pistons, these heads will net an approximate compression ration of 8.0:1. Basic cylinder head number is 6090. Several Ford casting numbers were used, including the common D3ZE-6090-AA. 4V in...

Single cylinder head from 1966 Ford with 390-4V engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. These are the GT exhaust manifolds with 14 drilled and tapped exhaust bolt holes. Current dates include: 6F17, 6A11, 6A10 Ford casting numbers...

Single cylinder head from 1967 Mercury Cougar with 390-4V engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.02 and 1.55 inch valves, and the chambers measure out at 71-74cc's. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090. This is a GT cylinder head with 14 drilled and tapped exhaust bolt holes. Current dates include: 7C8, 7C22, Ford casting numbers...

Single cylinder head from 1968-70 Mercury Cougar with 428CJ engine with smog holes. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.09 and 1.65 inch valves, and the chambers measure out at 73-76cc's. With stock pistons, these heads will net an approximate compression ration of 10.6:1. Basic cylinder head number is 6090. These are the Cobra Jet exhaust manifolds with 16 drilled and tapped exhaust bolt holes. We won't have these in stock...

Single cylinder head from 1971 Mercury Cougar with 429CJ engine. Sold as a core, needs thorough cleaning and rebuilding prior to use. Typically this cylinder head has 2.24 and 1.72 inch valves, and the chambers measure out at 73.5cc. With stock pistons, these heads will net an approximate compression ration of 10.5:1. Basic cylinder head number is 6090.  Also fits all 1970-71 Ford or Mercury with the J or C code 429 Cobra Jet engines, including Torino and Cyclone.Ford casting number...