Edelbrock Super Dual intake differences through the years.

Can anyone tell me if there were differences in the Edelbrock Super Dual intakes throughout the 40', 50's and beyond ? Any early castings versus late castings etc...

 

Bump. I would guess that the early ones had block letters while the later ones were script?

 

The biggest difference I know of is the generator-type mount on some, whether early, late or both, that was probably used for a fan/belt idler when running a magneto.

 

Some do not have exhaust heat, and are not meant for street use. The ones I've seen without heat uaually dont have the generator mount. That's for the 38-48 engines.

 

No generator mount was for '39-41 use or racers, where there was no need for a fan mount.
On the risers...I have an early block one on which the boss on each side that connects the two central bolts and the actual riser is milled away enough to fully expose the vertical riser p***age down into the block. This was pretty obviously meant to take a flat plate cover on each side (missing on mine) retained by the two bolts and allowing a block-off slug to be dropped into the hole...this would allow changeover from hot to cold manifold in 30 seconds. I also have an old (late heads are new, list as 1949 only) Edelbrock catalog making a cryptic reference to what might be this feature.
Does anyone else have one like this? I can't help but wonder if this was a feature from E or a clever do-it-yourself. It would account for the higher than stock bolt holes in center position...needed to affix the removable plates.

 

The intake below is one of two I have. Both are pre-'48(8BA), have the exhaust crossover, but have no date or casting code I can find. I would guess they are a street version of the racing Super Dual.

 

Bruce,

Can you post a picture of yours ?

Jim

 

Mine looks like this to.

 

I'm really interested in the pre-'49 ones. Can someone post comparison pics of heat crossover versus non heat ?

 

"Bruce,

Can you post a picture of yours ?"

No...shame, shame. HAMB actually got me a camera. Could not figure it out, and it is now head of the household. It is at home figuring out my income tax and teaching the cat to read Coptic right now.
This is from memory...I'm at work and need to go home to look at mine.
Look at V8 Bob's pic. I think on mine, the surface that includes 4 bolts and riser on each side just included the 2 inner bolts and riser on mine. These holes are/were higher than all the other intake bolts, which are proper length for Ford bolts.
That triangle containing the roof of the heat riser and 2 bolts is milled away so that the riser appears as an open round hole, with the crossover exiting as a slot in the side of that hole. Whoever milled it presumably meant it to be covered by a flat plate held on by the bolts, and the hole could easily be blocked just by dropping in a short length of rod, allowing nearly instant transtion from cold to hot.
There is a note that COULD be a poor description of this as a feature in my circa 1950 Edelbrock catalog. The job is very neat...and why would they have cast the center holes to require longer bolts than all the others??

 

I’m looking for one of these for a 59A with the exhaust crossover. With or without generator mount.