stock 425hp solid cam specs

[Adrian472]

Does anyone know the stock 427/425hp cam specs? what comp did these engines run, im sure it was something like 10.5:1.
I just playing around with my new dyno2000 software.
Thanks
Adrian

[DuckRyder]

Crane offers a "BluePrint":

http://www.cranecams.com/index.php?s...21&lvl=2&prt=5

long story short

284/284 (244/244) .524/.524

Edit: BTW if you have the cam disc search for 340321 on it.

Edit: fer spellin dernit

[mr0077]

And it seems like the comp. ratio was 11.5:1 on the 425 HP motor.

[Michael C Henry]

As I remember the 406 came with a 276° cam .The 410 hp 427 came with 310° cam and 425 hp 427 had 324°cam as described from Ford .Then my favorite cam, I actually have this cam new ,in the Ford tube in the basement . I Bought another in 1970 at a dealership in Lawton OK _" For trailer car only" 330° with115° overlap and .600" lift C8AX-6250-D .
In 1968 I had a 55 Ford 2dr post ,I had a 330° cam in a 406+.040" with a single 600 cfm four barrel carb in that 55 Ford .Came on like someone flipped a switch at 3000 rpm . It kept bending Crane push rods Then I took it to around 8400 rpm . The engine didn't survive. Then I tried a 324 ° cam in another 406 with 1020 cfm tripower that didn't resemble the rocket.
Then in 1969 put together a 63 1/2 Gallaxy with a 428 cu in engine- 276° cam , solid shell lifters, adjustable rockers, C6 trans 370 rear gear. I was drafted in Dec of 69.
I got married in 73 ,What I thought was my last hur-ra was to finish the 428. I bought a Holman and Moody 882 super high torque cam with H&M shell kifters and pushrods .On a stand it, sounded so qiuck .You moved the throttle and the engine was instantly at that rpm. I had it on a trailer made from a car front frame with electric, a small fuel tank ,radiator ,and headers. I use to start and rev it up a few times shutt it down ,close the garrage door and watch people up and down the block come out their back doors. After moving to Washington state I sold the 428 engine in 76 thinking lifes funpart was over .A guy came down fron Everett in a tall red Ford stepside pickup, said it was his wifes truck.He bought the 428 cu in engine from me . Did he get a deal? I also supplied that 276° cam as an alternative. After a few weeks he called me asking about that special cam bolt .He had miss placed that bolt and I told him to go to Ford and buy a new one.That was the last I herd from him.I could go on for hours describing all the special things I had on or done to that engine.Man did he get a deal!

[Woodz428]

According to late 60s Ford specs, the 4v and 2-4v used the same cam. It was listed as a 306* duration and .500 lift for the earlier (probably until '64,and has the same specs as the 406(and some 390 HPs),and 324* duration w/.500 lift for the later.The first cam is #C3AZ-AA and the latter is #C4AE-B. They list 78* and 112* respectively for overlap.Of course there were a few offered through the parts dept. that are even more radical, up to 330* w/.600 lift. You have to remember that these specs were prior to the standardization of .050 lift as the point of determining duration.

[Byots]

nm .

[ted]

As I use to run the "K" grind back in the late Sixties, I went back to the old Ford parts catalogues to see exactly what the specs was on that particular piece. It was the C3AZ-K camshaft with 290°/.500" and was listed for use in the '66 427 both in the 1X4 and 2X4 engines.

Going back a little further I find that the 1963 and 1964 427's had different cams for each year while the 1X4 and 2X4 versions were also different. The 1X4 cams were C3AE-M (276°/.525") and C3AE-U (274°/.525") for '63 and '64 respectively. The 2X4 cams were C3AE-AA (288°/.525") and this one carried through into early 1964 on the 2X4 engines where it was changed out for the C3AE-V cam with 290° duration. Date codes on the engines play heavily on the cam listings in my old reference books and there appears to be a myriad of service cams offered including the aforementioned C3AZ-AA with 306°/.500" specs. I spared you the listed intake/exhaust opening/closing specs.