427 casting picture

[avanti-176]

I am looking at buying a 427 long block and the guy sent me this picture when asked for the casting numbers...


.... you can see the cross bolt,press in freeze plugs?(I think some 427's had them).
The "HP" is what is confusing me is that normal?

Looks like maybe "c6ae" below the "HP"....

What do you guys think?

Thanks,
Dan

[Excaliber]

I think only the side oiler had the screw in freeze plugs. That crank looks like an externally balanced unit, like the 428's used. 427s (at least the side oilers) had no 'harmonic balancer' on the crank snout.

[Burgs]

Center oiler, or Side oiler? The side oiler gallies, and plugs, on the drivers side.

[avanti-176]

Ernie-you are correct it is a 428 crank. The motor is stroked.

Burgs- I am trying to get a pic of the other side of the block but the press in freeze plugs lead me to think centeroiler.

[Excaliber]

There were some FE blocks, other than side oilers, with the cross bolts. I don't know exactly WHAT blocks this includes however. Did the 406 run cross bolts? How about some of the FT (truck) blocks? And then there is the external harmonic balancer, did other cranks besides the 428 utilize that in some applications, or was it exclusive to the 428? If it is indeed a 428 crank, then what knowing blocks would accept that crank narrows down the list of possibilities.
Yup, lack of screw in freeze plugs rules out side oiler.

[Sal Gerace]

The part number looks like C3AE-xxxx-U. Could be any block. I am trying to find a book to decode the number but I can't seem to locate the U designation in any book that I have.

[avanti-176]

The heads are C5ae-f, which I believe are 427 medium risers. I thought maybe it could be a 406 block that is why I posted it here . That cast "HP" is what is really throwing me. I have not seen that before (granted I haven't seen tons of FE blocks but I have seen enough for that to make me go hmmm..) It may be perfectly normal, I just don't know.
I am currently trying to find out what the bore is and if it has been opened up at all.

What fun this is!

[ksmiff]

Marine motor?

[FFR428]

Well it is a 63 topoiler. The "HP" was very common to see on the 63 427's and it was dropped in 64. The 390HP was the first block to get the HP identfier and then the 62-63 406 and 63 427's. You should also see it on the back of the block, inside by the cam bores and inside the lifter valley. It should be a solid lifter block with the oil pressure releif valve above the rear cam plug. The crossbolts look odd as the original were castle nut bolts. Possible they were swapped at some point tho. I'd ask to knock out a freeze plug to verify it has 427 cyl wall cores inside and drill bit test it. Some 406's were cast with 427 wall cores tho. So anything is possible. My C3AE-D 406 block was cast with one set of 427 wall cores on one side... and 406 cores on the other. Do you know what bore size the block is??

G.

G.

[Power Surge]

What else do you know about that motor? From your one picture, I can see at least two rods are out of the motor, and the crank is rusted, so it's going to need to be cut most likely. Also rasies the question as to why there are heads on the motor if it's missing rods/pistons. And the heads look pretty rusty too.

Seeing that picture, if it were me, I'd want to see pics of the entire thing, disassembled. Unless you are getting it for like $800 or something, it might be more trouble than it's worth, sight unseen.

[Excaliber]

Coem to think of it, was a 406 even available in 1966? I thought it was strictly an early 60's motor...

[FFR428]

The block in question has a C3 casting number. And yes the 406 was a 62.5-63.5 production option. The 406 C4-A service block was available until 66 when the 428 was introduced.

[Dinobyte]

Originally Posted by Burgs

Center oiler, or Side oiler? The side oiler gallies, and plugs, on the drivers side.

Burgs,

What type of throwout bearing are you running with that clutch? I am having some troubles with my pull type slave and I am looking for alternatives.

Thanks
Michael

[Cashburn]

Watching too Neat setup on that slave cylinder. Interesting fork. Is that operating as a push?

[Excaliber]

FFR428, the block that started this thread looks like a C6AE? Or has it been determined it is in fact a C3AE?

[Burgs]

Michael and Jay, The slave pictured is pulling to the front. I did not end up with that set-up. The problem I had was the fork with the pivot on the passenger side, did not have enough travel to fully release the clutch. I ended up with a fork that pivots on the drivers side, and a similar slave pulling to the rear. I used a long adjusting rod to the fork, and a heim mounted to the frame at the other end.

I still have the parts in the picture if you want them.

Brad

[Cashburn]

Originally Posted by Burgs

Michael and Jay, The slave pictured is pulling to the front. I did not end up with that set-up. The problem I had was the fork with the pivot on the passenger side, did not have enough travel to fully release the clutch. I ended up with a fork that pivots on the drivers side, and a similar slave pulling to the rear. I used a long adjusting rod to the fork, and a heim mounted to the frame at the other end.

I still have the parts in the picture if you want them.

Brad

Interesting... your new setup is what we used on Michael's car. I think he just needs to adjust his pedal though since it is over-extending the slave after clutch break-in.

Thanks for the info. Did you end up with a Wilwood slave?

[Burgs]

Yes, the willwood slave that was supplied with the kit is what I used in the end. Interesting though, the blue one in the picture, from Forte, is the same as the willwood, but blue. Forte added the linkage at the fork end, and the slave mount that inserts into the bell, but the slave is the same.

[Burgs]

I ended up using the floorboard, or firewall, as a pedal stop.

[FFR428]

Originally Posted by Excaliber

FFR428, the block that started this thread looks like a C6AE? Or has it been determined it is in fact a C3AE?

Well the casting number sure looks like C3AE-6015-U with the 6 missing from the 6015. I looked pretty close but tell me if your seeing different? Maybe I'm wrong? LOL The HP designation is the clincher since no FE's had these marks after 63. Being the motor mount bosses are cut off in the pic it's hard to see if it's a 2 bolt mount block.

G.