the reason they refer to it as early is because they are non-roller blocks, should be 68-82? At some point in the 80's the roller block was introduced and that is what is referred to as the Late 302's
Can someone show me proof of this lighter block? I've got a E7TE and a E0AE and I really don't see a lot of difference between the two. The main caps look the same. The decks look the same. The only obvious difference is the roller cam mods in the valley and the rear main seal.Any 302 before 1980 is early to me. after 1979 ford went to a lighter block
Hmmm, 6 year old thread.Plus sometime in the early 70's the raised the deck hight, then sometime in the 80's they went back to the shorter deck. I'm not sure what the dates were but a 79 block has the taller deck.
Sure, theses modern parts and products help life expectancy.Well, don't forget that the newer ones went to thin metric low-tension rings in the quest for mileage with thinner oils. That made a large difference in wear over the fat chromed high-tension iron rings of the past. Between those, the improved stem seals, better oils, and a few other things, life expectancy from late '60s to late '80s effectively doubled. I checked the bores of the Explorer GT40 that I'm turbocharging for the Ranger, and it still has nice cross-hatch and clean bearings with 137k miles. It's not even at half-life if I don't blow it up.
David
Interesting. I have not noticed that at all. I'll have to try a hardness test on a few blocks to see if there is any substantial difference. I have not noticed any difference in hone wear, but I haven't been looking for it either. You'd have to do a lot of the same type of blocks in a row, and then a lot of the other type to see a difference that way I would think. Hones don't tend to wear very fast unless you change something like the honing lube. What kind of hone do you use, which stones, and what lubricant?Sure, theses modern parts and products help life expectancy. But a honing stone is a honing stone.. If it wear faster when honing late blocks => late block are made of a harder metal...
And I'm sure the better fuel metering with EFI eliminates a lot of cylinder fuel wash.Well, don't forget that the newer ones went to thin metric low-tension rings in the quest for mileage with thinner oils. That made a large difference in wear over the fat chromed high-tension iron rings of the past. Between those, the improved stem seals, better oils, and a few other things, life expectancy from late '60s to late '80s effectively doubled. I checked the bores of the Explorer GT40 that I'm turbocharging for the Ranger, and it still has nice cross-hatch and clean bearings with 137k miles. It's not even at half-life if I don't blow it up.
David
Not me a buddy of mine, a mechanic and dragstrip man who make a dozen of engines per year for friends.Interesting. I have not noticed that at all. I'll have to try a hardness test on a few blocks to see if there is any substantial difference. I have not noticed any difference in hone wear, but I haven't been looking for it either. You'd have to do a lot of the same type of blocks in a row, and then a lot of the other type to see a difference that way I would think. Hones don't tend to wear very fast unless you change something like the honing lube. What kind of hone do you use, which stones, and what lubricant?
David