here's the cam,

 lincoln/merc. y-blocks &mel's                                                               bucyrus, ohio.

hi, i rebuilt a motor for my friends e-bird last year. the engine hadn't been torn down since 1975. we found the bearings had been changed in 64. it had daul springs and a RPM-300 isky cam. could it have been a 285hp. it had old style traction bars welded on and a switch on the shifter for the overdrive. my friend powder coated everything he could on the engine. it looks and sounds  great.

 lincoln/merc. y-blocks &mel's                                                               bucyrus, ohio.

 

More factory high performance camshaft info:

The 1956 260 hp cam (recently discussed in the YBM - Randy Millard article) is an EDB-6250-B.  The specs are 260/260 dur and .278"/.278" lobe lift (.398" @ 1.43 ratio)  

The M-260 engine camshaft is an ECZ-6250-B.  The specs originally were 257/257 duration .300 lobe lift, then shortly changed to 256/252 duration .294 lobe lift.  (.429"/.420" @ 1.43 ratio) 

The M-260 cam b/p specified "Hard Facing Alloy On Cam Lobes".  It also specified "Engineering approval of samples from each supplier is required prior to authorization of part production".  This would lead me to believe this cam was coming from an aftermarket supplier that utilized hard facing, ie. - Isky and others.  It was the only cam I found that had these callouts.  The other blower cams did not.

I think for production all the blower cams in 1957 were manufactured (ground) by Ford at one of their engine plant.   For service it may be possible that cams were manufactured by an outside supplier.

Since the 292 were in cars through 1962 and in trucks until 1964, I don't think it would of been unreasonable for Ford to manufacture the blower service cams at their engine plant.  

Re the stories on the Ford relabeled shipping tubes from an aftermarket cam supplier for blower? cams.  If anyone has one of these shipping tubes or photos of it, it would be nice to see what exactly it says.

Regards,

Dennis

John Mummert.


Lawrenceville, GA

No, my reply was directed to "Philo".  Sorry, still learning how to navigate this forum.  However I do have a question for you.  When you mentioned "he used to sell" in a previous post, who (cam manufacturer?) were you referring to? 

Regards,

Dennis

Who, me?

I had to check it one time and it measured .288. It had somewhere around 11K miles on it at that time. Allowing for geometric error, measuring with the head on, it most likely is the bigger of the two. It's advertised to be .295. Unless the duration was measured differently back then, it's not a copy of the 302 duration cam.


Lawrenceville, GA

Lobe lift for the 290 and 302 duration cams were .290 and .295 respectively.  Kindly report back what you measure.

Regards,

Dennis

My cam is one of the blower cams he used to sell. The specs on the card are 226@.050, 274 advertised, 112 separation, and .295 lift. These specs clearly don't match what has been posted so far, though.


Lawrenceville, GA

I believe Mummert is having a repop of the 290 made, which he calls a blower cam. Probably with more modern lobe configurations though. John is extremely knowledgeable about cams, and if he sells it, it works.

  My cam in a Engle which was ground on a new billet, but using more modern lobes and slightly more lobe seperation than the factory cam. It would check stock (290) as it must for pre stock. We cannot get these from Engle any more as they have no more Y block cores.

 I still kind of think, and maybe Ted could verify, that some of the 56 cams and the 302 were ground by Isky and numbered by Ford for Nascar, well USAC. Can't prove it though. Maybe we should ask Ed, he's still around.

Frank/Rebop

Bristol, In ( by Elkhart) 

That's very interesting! I believe I have one of those B7AE cams in the 322 Y-Block engine that's in my '48 Tudor. It was given to me by a friend in 1965. He said it was the "blower cam". He bought it from a Ford parts counter but never used it as he was going to FE engines. It is cross drilled. I always wondered why it wasn't grooved...now I know! The next time I adjust the valves I'll check the lobe lift to see if it's the .446" or .454".

Thanks Dennis!

FIGHT CONFORMITY!