After all the snow we had this winter i finally got out there to snap this picture. I put an aftermarket carburetor on a 390 and was able to bolt the stock TV Rod plate to it and it seems to work well.

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Comment by Jason Edge on April 29, 2014 at 3:42pm

As long as you have blocked the center intake exhaust channel (as seen in picture at bottom) and keep the center intake to about 190 degree operating temperature you should be fine. In my first incarnation I only blocked the 4 outlet holes (2 in top intake channel and 2 on choke tube ends) to simply seal it up.  With the center intake ports open, and even with the heat riser removed I was still getting 300 degree readings on center of intake as you see in this video:

With my engine rebuild I blocked the center ports and effectively dropped the center to about 190 degrees.   A hot carb can and will cause vapor lock but there is also better air/fuel mixing and dispersion if you lift the carb a bit.  Racers and hot rodders often use hi-rise intakes not just for looks but for this very reason. These factory Cadillac intakes that are  raised in the air / above the engine intakes are already rather flat should benefit from moving the base of the carb up vertically off the intake. If I ever do a custom car again you are going to see a really tall spacer and completely different air breather setup, but keeping my car looking stock with air breather on, the 3/8" spacer/insulator was a good compromise. and actually raised the carb up to about the original height it would have been due to the factory intake to carb spacer with PCV fitting.   I really do need to update my carb intake project write-up at some point. I will probably take a hard look at everything I have done and know and write it up for a newsletter feature next year.


Comment by Frank Vollaro on April 29, 2014 at 2:09pm

On my 63 i ended up using the Rochester TV plate, i had a Carter which will work as well but at some point i think i mixed them up and ended up using the Rochester, works flawlessly I will post pic too, there's not much information out there on TV rod for the edlebrock. 

Tony, what kind of issues can you run into when not using a spacer, i use one just was wondering. 

Comment by Tony and Ginny 429 on April 29, 2014 at 1:47pm
You need the heat spacer here ,even if you blocked the passages under the carb
The way this intake manifold is designed ,you have a lot of heat under the carb
Jason tried this back when ,and went back to the spacer and gaskets under his carb , with his Edelbrock
Comment by Curtis ENSTROM on April 29, 2014 at 12:47pm

My son and I did the same thing on his 63 I will try to post a photo

Comment by Matthew Kurland on April 16, 2014 at 1:59pm

I will try to upload more photos

Comment by Matthew Kurland on April 16, 2014 at 1:56pm

The carb is an edelbrock 1406, 600cfm reman piece. Currently it is bolted directly to intake manifold with the heat risers blocked off. It is stage one of making this car more driveable and hopefully a little bit more reliable. It is a project but it seems to go down the road ok.

Comment by Colin on April 15, 2014 at 5:27am

What make of Carb is that ? Have you used the original spacer under it ?

Comment by Russ Austin on April 14, 2014 at 6:15pm

One thing you need to check, is that the TV rod does not go back in, as the throttle is moved past the half way point. The TV rod should not go in at all when the throttle is depressed. It needs to pull out.

Comment by Jason Edge on April 14, 2014 at 1:37pm

Thanks for the Picture1 I will save this for reference with your name attached.


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