what cylinder heads
#1
#2
#4
The 302 wasn't available in the Ford trucks until mid-year 1969. However, the 302 was available in the Mustangs mid-year 1968, when the 289 ended production.
Possibly someone installed a J-code Mustang 302 engine, or the heads from one, on the engine in your truck.
The J-code '68 Mustang came with a 4 bbl carburetor and intake. It also had heads with a "4V" cast in between the rocker arm stands. C8OE-A and C80E-F castings.
The only major difference between the 4V 302 head and a regular 2V head is the size of the combustion chambers. The 4V head had 53.5cc chambers. The 2V heads had 63cc chambers.
Heads
There are a lot better small-block aluminum heads available from the aftermarket --such as AFR (Air Flow Research) 185s.
As far as stock Ford production 5.0L (302) iron heads go, the 1997.5-2001 Explorer GT40P heads are about the best factory iron heads you can get. They are marginally better than the '93 Cobra GT40 3 bar heads.
This is a set of GT40P 4 bar heads that I have, --shown just after I got home from the wrecking yard with them. (Notice the (4) bars cast into the ends of the heads).
"P" cast into the corner of the head (right side of photo) just outside the valve cover flange.
GT40P casting in between the rocker arms.
Five.Oh Info : The Ultimate Ford GT40 and GT40P Cylinder Head FAQ
Possibly someone installed a J-code Mustang 302 engine, or the heads from one, on the engine in your truck.
The J-code '68 Mustang came with a 4 bbl carburetor and intake. It also had heads with a "4V" cast in between the rocker arm stands. C8OE-A and C80E-F castings.
The only major difference between the 4V 302 head and a regular 2V head is the size of the combustion chambers. The 4V head had 53.5cc chambers. The 2V heads had 63cc chambers.
Heads
There are a lot better small-block aluminum heads available from the aftermarket --such as AFR (Air Flow Research) 185s.
As far as stock Ford production 5.0L (302) iron heads go, the 1997.5-2001 Explorer GT40P heads are about the best factory iron heads you can get. They are marginally better than the '93 Cobra GT40 3 bar heads.
This is a set of GT40P 4 bar heads that I have, --shown just after I got home from the wrecking yard with them. (Notice the (4) bars cast into the ends of the heads).
"P" cast into the corner of the head (right side of photo) just outside the valve cover flange.
GT40P casting in between the rocker arms.
Five.Oh Info : The Ultimate Ford GT40 and GT40P Cylinder Head FAQ
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