I can get a free 302 from a 77 granada. it ran when removed. What parts are simular on it as compared to the 302 and 289 engines from 68 mustangs. I know the bore sizes are different from 302 to 289.
Start from the top the intake will have the EGR valve and other pollution provisions. The heads will have smaller valves and larger combustion chambers. Actually the bores for 289 and 302 are the same the difference is the stroke.You can put the 289 rotating assembly in the 302 block but not visa-versa. If your car doesn't have disc brakes I'd get the spindles, rotors, master cylinder and calipers off of the Granada too! Have fun.
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65-2&2, 63 Falcon vert, 32 coupe, 76f-250 4&4,72 Ranchero GT-Some is good,more is better,and too much is just enough.
"You can put the 289 rotating assembly in the 302 block but not visa-versa"
Sure you can, I built my 289 block with a 302 crank/rods/pistons.
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66 Coupe - CandyApple Red, 2 barrel 289, C4.
66 Coupe - (father-daughter project). Tangier Orange, 302 with AOD, 17 inch Bullit wheels.
69 F-100 - 351c. Emerald Green Metallic paint. Still "in progress".
68 Barracuda - Rusted out project. 318 in the frame rails for now. Maybe a 360 in the future.
00 Mustang - (son's car) V6, 18 inch Saleen wheels.
It was noted in a couple of engine building manuals and the Ford motorsport books that the bottom of the bores is shorter on the 289 block vs the 302 block. That is the reason they recommend not to do this because the skirt of the piston comes farther out of the bore at the bottom causing premature piston slap(wear). If it's working.....good!
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65-2&2, 63 Falcon vert, 32 coupe, 76f-250 4&4,72 Ranchero GT-Some is good,more is better,and too much is just enough.
This is an often discussed subject, but I also find that there is no difference in cylinder lengths between 289 and 302 blocks. Can't say for sure about 5.0 blocks as I have never measured any. Some people have reported a slight difference in cylinder lengths but that difference is small enough to be chalked up to casting tolerances (not to mention possibilities like decking). Sometime the 302 was shorter. The difference between cylinders on a the same block is often more than those differences between blocks. In any case I believe the shorter cylinders are an urban myth.
Interesting. While I have read about this a few times,I have never physically measured the bore lengths. I have seen photographs illustrating this however.Now, along those same lines, I've seen photographs of heads in a popular Ford hi-po engine book that were said to be Boss302 and were in fact 351C heads. Too late to make a long story short but it follows the old adage of " Believe all of what you see, and half of what you hear". Thanks for the input!
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65-2&2, 63 Falcon vert, 32 coupe, 76f-250 4&4,72 Ranchero GT-Some is good,more is better,and too much is just enough.
Well a Boss 302 does have 351c heads. As far as the bore skirt length, I don't think it matters all that much, we're not talking about much of a difference. I do think with a stroker crank, putting more of an angle on the rod as the piston moves up and down, is probably a lot worse. Anyway my little 289 with the 302 crank and rods runs pretty well, it is not seriously pumped up in any way, just a mild rebuild with 10.0:1 pistons, 270/280 cam, and chevy valves in the stock head, topped with a 500 cfm 2-barrel. It feels a lot stronger than it did as a stock C-code motor though!
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66 Coupe - CandyApple Red, 2 barrel 289, C4.
66 Coupe - (father-daughter project). Tangier Orange, 302 with AOD, 17 inch Bullit wheels.
69 F-100 - 351c. Emerald Green Metallic paint. Still "in progress".
68 Barracuda - Rusted out project. 318 in the frame rails for now. Maybe a 360 in the future.
00 Mustang - (son's car) V6, 18 inch Saleen wheels.
If I'm not mistaken, the 75-77 302 blocks are slightly taller(8.226) than all other 302/289 blocks. If you plan to use it, you can have your machine shop mill it to the more common 8.206". The up-side is that the heads have a much smaller combustion chamber size(apprx. 54cc). This will greatly affect your compression ratio.
302 Engine Difference Question 
