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2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
Originally Posted by shenango
Of course everyone but you has to be wrong. The square bore base gasket is from my 1970 Dodge 340 with original Carter 4933S carb. The spread bore gasket is from my 1975 Vette original carb 7045223. Both units have the born with intakes and are very original and very American.
I have a spare Qjet on my shelf that I have used on my Mopar through my Edlebrock adapter for spread to square applications. I am not sure what the OP is using on his motor but he did say the carb had to be centered just right in order for it to work at all. Both of my setups whether using the adapter or not, slide on the studs and there is no centering required at all.
As far as the pissing match you are trying to have with me, I will concede. you know everything and I know nothing, you win.
Jerry
I think he was talkingvabout the bracket that holds the throttle cable was moving. I had the same setup and it would twist forward because the pin was missing for the second bolt hole
Last edited by Rescue Rogers; 04-18-2019 at 09:28 PM.
So I followed your instructions and got to the bottom of it! ... Sorta.
I removed the carb and was able to open up the throttle completely. Got the secondaries to open too, just like Rescue said.
The carb wasn't the problem. I replaced the carb onto the intake and realized it didn't fit.
The valves weren't opening because they physically couldn't! I remembered that when I first got it, there was a spacer/lifter beneath the carb. Someone on this board recommended I ditch it so I would have room for a bigger air cleaner. And I did. But now I realize its purpose. It was to clear space so the valves could move.
But even with this knowledge, my problem is far from solved. I think I have two options.
1. Get another spacer, go back to small air filter, and buy new throttle cable as its still broken.
2. Buy a new carb that fits on my engine, along with new throttle cable.
I am leaning towards number 2. I haven't heard great things about the edelbrocks, of which I currently have a 1407. I also really don't want to go back to the small air cleaner, but that'd be the only option with a spacer, ad my hood barely closes as-is.
Can you guys tells me what carbs would fit my intake? And what some of the pros/cons of the carbs out there are? I don't mind spending good money on a quality carb. I want this thing to run and I want to put my stamp on the motor.
But even with this knowledge, my problem is far from solved. I think I have two options.
1. Get another spacer, go back to small air filter, and buy new throttle cable as its still broken.
2. Buy a new carb that fits on my engine, along with new throttle cable.
I am leaning towards number 2. I haven't heard great things about the edelbrocks, of which I currently have a 1407. I also really don't want to go back to the small air cleaner, but that'd be the only option with a spacer, ad my hood barely closes as-is.
Can you guys tells me what carbs would fit my intake? And what some of the pros/cons of the carbs out there are? I don't mind spending good money on a quality carb. I want this thing to run and I want to put my stamp on the motor.
That is a 'Smiley Face' manifold and you still have a gasket on it.
Yeah seeing the pics now I realized it left a gasket on it. Can you still tell the manifold even with the gasket on? Here is a pic of the firing order number: 18436572. Does that tell you anything? Where can I find out exactly what type of manifold I have?
Last edited by BlankSlate; 04-22-2019 at 04:33 PM.
Yeah seeing the pics now I realized it left a gasket on it. Can you still tell the manifold even with the gasket on? Here is a pic of the firing order number: 18436572. Does that tell you anything? Where can I find out exactly what type of manifold I have
Sorry guy...THAT is a @#$% up engine....get it back to basics first...
I have owned '300' HP 69's....they RIP!
Carb, timing, exhaust unstick the manifold heat riser!
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
there really isnt anything wrong with edelbrock carbs, they are similar to quadrajets as they have an airvalve but the newer models have better bells and whistles than the older models. And there are people that complain abouut quadrajets and the " quadrbog" but that is just the air valve improperly adjusted. If you are not wanting to change the manifold to be able to use the edelbrock, or use the spacer and look for a good drop base air cleaner that will allow a bigger air cleaner, then I would talk to Lars about the correct quadrajet for your car. It will be a monster once you get this sorted out
For the time being, I am going to try to make my current carb work as opposed to getting a new one (which I plan to do eventually).
I got a new throttle cable and bracket. Got a new phenolic spacer. Couple of questions on the spacer.
1. The spacer came with two options. And open one, or a four barrel one. I tried both. The throttle moves easily and fully with the open one, but sticks more with the 4 barrel. Is there a downside or danger to using the open phenolic on my smiley-face manifold?
Next question. The spacer came with two little gaskets. Very thin rubber, almost as weak as paper. Do I need stronger gaskets or is it no big deal? Also. Do I need to spray adhesive to the gaskets?
Lastly, like I told you guys, I have next to no room for an air cleaner with the spacer. What can I do to alleviate this? Is there a way to lower the engine? Are there super-thin air cleaners? (I've searched before but found nothing).
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
I would use the open one that does not stick under the carb. I use the paper gaskets but what they sent should be fine. you need a gasket on the bottom and the top of the spacer. If those 2 are all you have, 4 barrel gasket under the spacer, open on the top, then the carb on top of them all
i dont use anything as a sealant but some suggest a very thin layer of grease so they stick but are removable. I vote dry myself.
.you will need a drop base air cleaner and the element can be 2, 3 or 4 inches depending on how much room you have
heres what they look like. the bottom plate drops down around the carb so the lid sits lower. You need to know the diameter of the openning you need. If the one you have fits, just measure it
For the time being, I am going to try to make my current carb work as opposed to getting a new one (which I plan to do eventually).
I got a new throttle cable and bracket. Got a new phenolic spacer. Couple of questions on the spacer.
1. The spacer came with two options. And open one, or a four barrel one. I tried both. The throttle moves easily and fully with the open one, but sticks more with the 4 barrel. Is there a downside or danger to using the open phenolic on my smiley-face manifold?
Next question. The spacer came with two little gaskets. Very thin rubber, almost as weak as paper. Do I need stronger gaskets or is it no big deal? Also. Do I need to spray adhesive to the gaskets?
Lastly, like I told you guys, I have next to no room for an air cleaner with the spacer. What can I do to alleviate this? Is there a way to lower the engine? Are there super-thin air cleaners? (I've searched before but found nothing).
If your motor mounts are shot, consider replacing them with solid motor mounts -this can gain you a bit of additional hood clearance (and structural rigidity but at the expense of added vibrations), but the easiest option has been mentioned several times: drop-base for the air cleaner.
04-18-2019, 09:02 PM
