Dennis, most of the older aftermarket cores I've seen have YB-1 cast in them. You will usually find CWC on them. We long believed that CWC was the name of the foundry. I have been told that it inidcates the matterial the core is made of. Don't know which is true.

Newer cores have the number 3358 B-S.

Factory cores have FoMoCo on them.

Early Y-Block cams were not hardened and Rockwell in the mid 30c range. According to a Hollenders interchange manual I have Ford began hardening the cores in 1958. I have not confirmed this date.

The last Y-Block cams marked CAB-X are definitely hardened and use cast lifters

Form the 60's thru mid 2000's cam core Rockwell was in the 48-50c range. I'm told that new cores are supposed to be around 52c

Lifters must Rockwell at least 3 points higher than the cam core to survive.

http://ford-y-block.com 

20 miles east of San Diego, 20 miles north of Mexico

John,

Please clarify what you mean by an "aftermarket core".  Any markings or distinguishing features?

Regards,

Dennis

  

I had another look at the blower cam i got from Wally Kistein last night. It is ground on a Ford core and the casting is clearly marked EDBD. The snout of the came is marked in buzz pencil: B7A6250C. The oil groove in the center journal had been heavily modified.

The short duration over the counter B7A6250C cams I've seen where ground on aftermarket cores.

http://ford-y-block.com 

20 miles east of San Diego, 20 miles north of Mexico

Found a Ford Blower cam in original tube back in the late '70s. Friend of mine with an F Bird bought it. Put an Effingham Regrinding cam on the blower cam in a 312 that I had in my Bird with dual quads for sevral years. Idled a little rougher than the stock cam and seemed like it ran a little better. Would go to 6000 rpm with good valve springs but power fell off after 5500 rpm. Still have complete motor stashed in my barn. Local dirt track guys ran this cam back in the mid '70s. Friend had one in '57 Ford dirt track car back then. Gave the small block chevy guys fits with it. Another guy had one in a 32 Ford coupe and they could not keep up with him either. Don't think I have the specs on it anymore but seemed to work prety well.

Dennis:

Here is a camshaft listed as a blower cam for sale on ebay. item number 270650991510

http://cgi.ebay.com/ebaymotors/NOS-1957-FORD-Y-BLOCK-312-SUPERCHARGER-F-CAM-EDB-D-/270650991510?pt=Motors_Car_Truck_Parts_Accessories&hash=item3f040e6396  


marv

John,

Thank you for posting the Engle info.

I am now looking for ANY information on Ford camshaft ECZ-6250-C.  If anyone has a Ford Parts Catalog, Master Cross Reference List, Price List, Obsolecence Book, or other reference, document, magazine article, etc ... that mentions or lists this cam, please advise.    

I am trying to determine if this in fact was an actual Ford part and if so, what the application and/or specification was on it.

Also looking for anyone that has one of these "Isky camshaft shipping tubes" repackaged or relabeled as a Ford service part.  Allegedly a supercharger cam, but could be others.  I've heard this story, but does anyone have the packaging or "first hand" experience re this.       

Regards,

Dennis

  

Dennis:

I dug up the cam card for my 124.  36-76, 76-36, lift .450 (didn't state which rockers, I assume 1.54), lash .018, duration 292.  That duration number concerned me when I got the cam, but I theorized that NHRA accepted it, and if it was lashed at .019 or .020 it would check 290 or less.  As it turned out, it was never checked by NHRA anyway.  The spec in the blower manual says the blower cam was 32-78, 38-72.  Interesting, but both cams have 110 deg. lsa.  NHRA didn't check lsa back then, only duration and lift.

John - "The Hoosier Hurricane"

John,

Found an old ad on the Engle #324.  The Aug 1969 Car Craft article on Walker's blown car indicates NHRA accepted Engle #124 at 290 deg .450". Do you have the detailed timing event grind specs on the #124 camshaft? 

Regards,

Dennis

   

There's some history for ya folks!

Frank/Rebop

Bristol, In ( by Elkhart) 

UUUUUHHHHH, I think I gave them the specs.  My friend Jim Hunnicutt became their national tech director.

John - "The Hoosier Hurricane"