429 police interceptor
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429 police interceptor
I am fixing to buy a project drag car its complete car and guy says it has a 429 police interceptor motor in it. i read that the police interceptor was the 429 cobra that came in a limited amount of mustang cobras and torino cobra. How can i tell for sure if its a 429 cobra or police interceptor? I have a 429 out of a torino but its not the cobra. what would i need to look for to identify that its a cobra or police interceptor
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From: iowa
the casting numbers should be cast on the head above one of hte exhaust ports (#3 from the left as I remember), the SCJ or CJ head is marginally better but the PI head isn't too bad either probably the second most desirable factory cylinder head, well let me refrase that third if you count the boss heads but thats another cat all together.
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From: upstate N Y
If the car is what you want then yes. There are alot of aftermarket heads out there now that outflow any factory head.But if you decide to trade up those heads a worth a few hundred dollars anyway.If you were just buying it for the motor then its probably better to look further.
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From: Kentucky
I have a 460 PI engine and my cousin has a 429 PI, we have took them apart and this is what we found:
The heads have the same casting numbers (D2OE-AB)and look the same in every aspect.
The pistons in the 460 are low comp. dished, while the pistons in the 429 are flat top.
The rods are the same, having football style bolts.
The block in the 460 was a D1VE 2-bolt main, the 429 block is DOVE 4-bolt main.
Hope this helps a little bit.
The heads have the same casting numbers (D2OE-AB)and look the same in every aspect.
The pistons in the 460 are low comp. dished, while the pistons in the 429 are flat top.
The rods are the same, having football style bolts.
The block in the 460 was a D1VE 2-bolt main, the 429 block is DOVE 4-bolt main.
Hope this helps a little bit.
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Joined: Dec 2003
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From: iowa
thats good info David, but don't expect to find a 4bolt scj block on every 429 pi engine, the most likely scenerio with that one is someone built a 429 using a cj bottem end and PI heads, or atleast if not a cj engine they got lucky and found one of the few regular thunderjet 429s that happened to be built on the cj block. both the 429, and 460 should have the dished pistons, and the 2 bolt DIVE blocks but like everything else with Ford in that era nothing is set in stone as to what they might have put together from parts they had left over. Another possiblility on that engine is back when it was still under warrenty the bottom end went out and the dealership ordered a service block or short block and that happened to be the one that was sent to them but the flat tops still shouldn't have been in it.
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From: Kentucky
Yor right Rob, my cousin nor me bought the engines new, so all we know is what we have.
I just recentley bought mine, my cousine has had his setting in his basement for over 25 years. He says that he bought it for 75.00.
He got it from a local county deputy that wrecked his car. Back then all county officers had to supply thier own cars.
I just recentley bought mine, my cousine has had his setting in his basement for over 25 years. He says that he bought it for 75.00.
He got it from a local county deputy that wrecked his car. Back then all county officers had to supply thier own cars.
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From: West Kentucky
I can verify that 429's came out factory with flat top pistons in the 1969-71 model years. One of the first engines I ever tore down was a '70 model 429 2V engine out of a Country Squire wagon, it had flat top pistons with 2 valve reliefs and factory compression ratio was rated at 10.5:1. I still keep one of those pistons today on my workbench. The 4V engines were rated at 11:1 and I was told they were flat tops with only one relief thus giving the extra .5 in compression. I since found a '71 429 2V engine and it had the same pistons as the '70. In 1972 compression ratios dropped to 8.5:1, thats when the dished pistons started in the 429/460's along with open chambered heads.
As far as the 4 bolt mains........thats kind of a search mission there. I've never found one except at swap meets and ebay. I have heard rumors that they could have been found in anything, the only way to tell for sure was to find a DOVE block, drop the pan and look.
As far as the 4 bolt mains........thats kind of a search mission there. I've never found one except at swap meets and ebay. I have heard rumors that they could have been found in anything, the only way to tell for sure was to find a DOVE block, drop the pan and look.
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