I seem to remember them in the mid to late 60's, but I would call Edelbrock to be sure.....800-416-8628.
.

 

Thanks Tech, I will give them a shout. If they showed up around when you think you remember, be just about perfect. Lots of them on EBay for a fair price and I don't believe it would work great for this motor.

 

do believe that should say. darn touch screen.

 

The C3-Bx came with a notch cut in the plenum divider positioned specifically to clear the wide, solid, single rear throttle blade on the Holley Model 3160 List #3916-1s 950 cfm 3 barrel carb or the List #4604 1050 cfm 3 barrel, which debuted in either late 1967 or early 1968,.... so that would place the intake at that same time frame and continuing to around 1973 or so when the 3 barrel was officially dropped from
production.
That's where the "3" in "C3-BX" came from, as Edelbrock also made a identical manifold without the notch, called the "C4B" and "C4BX"("Chevrolet Four Barrel" and "Chevrolet Four Barrel Extra"). The X denotes slightly larger internal dimensions compared to the non-X models.

I've got a couple of those 950 3 barrels, they were a "HP" carb 40 years before Holley officially used the HP moniker to describe choke tower -less carb main bodies.
The 3 Barrel became overshadowed in late 1969 or 1970 by the introduction of the larger base "Dominator" Model 4500 series carbs.

Still a great carb if you know how to tune Holleys well, and I've found it a nice gearhead conversation piece as many have never heard of them.

 

Hmm o.k.thanks. I think that's just about the right era. This thing might only make about 250 horsepower, but it's gonna look cool doing it.

 

As far as manifold potential goes, these should be good right up to around the 400-425 hp level. They are the precurser to the Performer type manifolds.

Basically Edelbrock's offering in the market to rival the OEM Chevrolet aluminum Holley pattern intake used on stuff like the 350 HP 327 L-79 Corvette, Chevelle, and Nova engine and the 290 HP 302 Camaro Z28 and the 370HP 350 LT-1 Corvette, Camaro, and Yenko Deuce(Nova) engine.

 

yeah, I was looking at those. talking expensive. The motor it (or maybe an offy 360) is going on. is one that most people would flat out tell me not to build though. 450 horses is far and away beyond what I have planned for this. 61-64 283, 327 small journal crank. 307 pistons. 060 over, 461 heads. can't decide if I wanna hide a modern valvetrain in it, but leaning towards not. no it's not getting an L79 cam.

 

Hot Rod Deluxe did an article on the c4b or bx a long time ago. It stacked up very well against the Performer manifold, and wasn't too far behind the Performer RPM. If you're doing this on a mild 350 or a 327, 283...I doubt you'd ever notice any difference at all. Other than they look cool compared to the plethora of RPM Airgaps we see at cruisenight.

Maybe its just me; but I've never seen a SBC Offy manifold that panned out well. Sure a 3x2 or dual quad is more about the vibe than all out power; but I don't remember ever been impressed with their SBC offerings. And I'm not an Edelbrock zealot either, in fact I had my hands on 2 chev manifolds from them that were very poorly manufactured.

 

I am leaning towards one, for style purposes. of course if I ever get around to doing this. Irons in the fire and what not. honestly I don't know who would want a motor like it. thanks for the reply.

 

hmm, I am looking in the wrong places for original bypass valves I guess. don't want a spin on filter on this. I have a couple spin on adapters like I put on race motors, well I got time.

 

I don't have current pics on this laptop, but I picked up one for a build 2 summers ago. The manifold came off of a 69 Corvette and was put on by the original owner shortly after the car was bought new. The manifold I have, was purchased from the original owner, which still has the vette.

The rear runner will not allow for the current HEI setup, so what I did was pick up an HEI unit that has the original points style diameter base and appearance.

The engine that was being worked on today was a small journal 327 forged crank short block. Pics below are of 2 manifolds for the engine OEM 1 x 4bbl and 2 x 4bbl. A local shop has available a OEM Early Corvette 2 x 4 bbl setup with numbers matching carbs.

I found pics of the C3B and a Early Street Dominator, both have the old school look of early oil fill tube.

Pics below

 

cool, thanks for the reply, glad I started this thread instead of going with what I thought that I knew about vintage speed equipment.

 

Appreciate the kudos. This weekend I plan to picking up a 1955/56 265 Chevy Small Block, which is the one that started it all. Not sure what to do with it, but will be nice to have. It has no oil filter, no PCV, not tapped for PS or AC brackets, no pre-drilled holes in the Valve covers, but it does have a draft tube and it still runs.

One of the things interesting you find with the vintage parts is the quality of the old school Made in America stuff. Now all cars look the same, all plastic with planned failure, guaranteeing that you have to take it back to the dealer for a $900.00 alternator.

 

If it is a 1955 265" small block, it won't have any side mount motor mount bosses either, it will only have the two sets of holes in the front face at fuel pump level, and would have used a transmission bell with mount ears on it and no tailshaft mount…..the old 4 point mounting that was done away with in 1958.

 

Yeah definitely. I also appreciate you guys not telling me to take that 283 and turn it into razor blades. I've built 350s, I build motors for circle track racing. I got a .060 over 350 11.5-1 with S/R Torquers and a .504/.504 cam in the car right now and a 358 on the stand that's Dart SHP based with a lightweight crank, pistons and 4340 rods, Iron eagle heads, shaft rockers.. BAD ***. I am not exactly sure what tugged at my heart strings to do something so far away from what I normally do. I don't even have a classic to put this thing in. Hopefully after I leak proof it and dyno tune it somebody will give it a good home because it's gonna be sexy and classic. Hmm maybe it's the in unending call of dudes (who usually don't know actually how to) saying "just swap in an LS....

 

Theres also some interesting manifolds produced by defunct speed parts manufacturers. One of the more interesting ones was the Creitz 2x4 and 3x2 manifolds. However, they're not going to improve torque at street RPM lol

 

Sounds cool, I actually would dig it if I had some mid sixties ads from Hot Rod Magazine. It would help my shopping as the era I am going for, while stuff from it is familiar to me was between 8 and 12 years before I was actually born.

 

Will be nice to see when done, hope you submit some pics

 

how do you submit pictures here? do you have to have a photo bucket account or something?

 

https://www.hotrodders.com/forum/how-post-pictures-videos-hotrodders-com-210093.html

 

this is it at left that's one of its brothers on the right. It won't have the sauce that one does, but it will be cooler looking.

 

Looks good. I'm also in process of build a running stand, something I been wanting for a while.

 

I need one. don't really have anywhere to put it though. I keep telling my buddy Tony that rents the back of my shop for his S10 that I am gonna start putting motors in it and driving it around if he don't start working on it though.. I am only kidding. 🙂

 

ohhh, that's not a run stand. that's my dirt car with the front clip taken off.

 

1050

Do you need a C3B and a 1050 carb, as I have one that I used to run on a 327 in 67, 68. Needs rebuilding but is all there and not messed with.

 

thanks to you guys I am thinking a c4b and a 600 would be a better combination with my little motor, but thank you, good looking out man 👍

 

Actually I had never heard of a c3b, a 3 barrel 1050 carburetor or a c4b intake before. I thought somebody had notched the 3b intakes that I saw for sale. I am really really glad I started this thread now.

 

Well the 327 made it to the stand, the 283 still a bit sad and lonely.