do stock 5.0's have forged pistons or not?

E7tE block which was used in a lot of 87-90 Fords. In 1991 there was a slight change so the block plate number was F1xx

If it's a mustang engine it would have 4 piston reliefs and E7tE heads. The circular pistons are from a non-HO engine, and should have e6 heads
Did you notice theres two different motors there the number on yhe bottom of the block ive shown both the second one should be the ho motor? Is it? The first one goes with that flat top piston motor second one is out of a 90 gt says ho on injection. And bore cam shows pistons have reliefs
 
Did you notice theres two different motors there the number on yhe bottom of the block ive shown both the second one should be the ho motor? Is it? The first one goes with that flat top piston motor second one is out of a 90 gt says ho on injection. And bore cam shows pistons have reliefs

Yes, that block was used with both the HO and non-HO engines in the 87-90 time period, so it really doesn't say what it was out of.

Mustangs would have E7TE heads on it, while the non-HO motor (which is what I suspect the motor with the circular dished pistons is) would have E6 heads on it.
 

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What's the part number on the spark plug? I believe the two heads take different spark plugs so that can be used to ID it.

Also, underside of the head near the pushrod guide holes...do you see a part number cast into the head?
 
Yes, that block was used with both the HO and non-HO engines in the 87-90 time period, so it really doesn't say what it was out of.

Mustangs would have E7TE heads on it, while the non-HO motor (which is what I suspect the motor with the circular dished pistons is) would have E6 heads on it.
Where do i find the numbers on the heads? Im sure i could find that somewhere on here or google but be easier if you just yold me
 
Post #31 on page #2 of this thread shows "E6SE" on the cylinder head.
E6SE = 1986 (all passenger cars) or 1987+ non-H.O. (passenger cars)

Engine block casting number is of no use if you want to know what the block is *from*. What you need is the partial VIN stamped on the block. Post #35 on page #2 of this thread shows the spot where the VIN should have been, and that spot looked blank in the pic. So you are not going to figure out what the block was *from*.

Only thing you can do is figure out the exact day the block and heads were cast, and again, the casting number is of no use to get you an exact day/month/year. You need the date casting code for that.

Post #36 on page #2 of this thread showed the engine block casting number E7TE but not the date.
Post #38 on page #2 of this thread showed the engine block casting number E7TE but not the date.
The date casting code looks like an oval plate with a screw on each end. It is in the same location as the block casting number but on the 'curved' edge of the block.
E7TE = 1987-90 (all passenger cars and trucks)

Post #50 on page #3 of this thread showed the cylinder head casting date but the pic is at such an angle that makes it too hard to read the complete date. All I can make out is an "8". That same head has an "S" by the valve cover rail.
8 = cast in 1988
S = E6SE head
 
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