An extra unmachined boss protruding from the front of the driver's side cylinder bank can be easily spotted at the junkyard. Identified by casting numbers C8AM-B, 75ZY-AA, D1ZM-AA, among others, these blocks may be spotted by the "Hecho En Mexico" cast in the lifter valley. On my bathroom scale a 1970 dated Mexican block weighed within 1/2 a pound of a regular 1970 302 block. Folklore claims these to be beefier than other blocks. These were supposedly made with a higher nickel content alloy. Some 302 blocks cast in Mexico have thicker, 289 HP style bearing caps. Many much later 5.0 fans have used this block as it is heavier than the 5.0 series where Ford pared down the empty block weight (and much more) as a result of the '70's gas crisis and EPA regs (remember the ill-fated 255 CID Windsor of the late 70's?).īut, although the Mexican block is heavier than the later 5.0s' it's literally no heavier than the original 289-302 blocks of the 60's and early 70's. They do use the early 289 2-bolt style caps but that is about it.
Lots of folklore about that Mexican 302W block, just like all the high nickel content FE blocks that we seem to see from overzealous sellers. Here's my post on the BBF Forum where some claim the Mex block is heavier, better, high nickel content, able to leap over tall buildings in a single bound.etc. I didn't have any 'plain' blocks laying around unassembled to measure.
0 kommentar(er)
