390 intake confusion
#1
390 intake confusion
I want to avoid putting the iron intake back on my 390, because it is heavy and I am old. I'd appreciate advice on which aluminum intake manifold is good (and relatively affordable) to go under the Carter 600 cfm 4 bbl. I'm not going to race this truck, so a low price is more important to me than performance. Used is good too. Thanks in advance.
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Even the aluminum ones are pretty heavy. I have an Edelbrock Performer on mine and it does pretty well. For either aluminum or iron, a good way to avoid heavy lifting is to use the cherry picker with a carb lift plate. Overkill? Yes. But it makes it easier to place it correctly too.
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thanks
Truck runs good, with new water pump, timing kit, valve job (including one junkyard head), and rebuilt carb (by me). Thank you everyone who replied. specially WYRM73 who mentioned a "carb lift plate". I had never heard of one, and it helped a lot. The 80 pound manifold went on like putting a lid on a jar. That cherry picker held it just so, and very steady. Next, maybe a distributor, as mine is the original I think. And there is some unevenness in the idle. A little. But mostly---all good.
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Jake-
My manifold is apparently from a 60's 390. The parts guy told me that, based on the thermostat I needed.
Meanwhile I had already installed heads and manifold using a 73 390 gasket set.
The manifold gaskets stick up 1/16 to 1/8 inch at the top. So I filed them down to let the valve cover gaskets lay flat.
They also stick out 1/4 inch on one end of the D2 heads.
Maybe the early intake gaskets would have fit better, I don't know.
No leaks though, so far. At least while running. I got some drops of oil out the front when glugging in oil for an oil change.
My manifold is apparently from a 60's 390. The parts guy told me that, based on the thermostat I needed.
Meanwhile I had already installed heads and manifold using a 73 390 gasket set.
The manifold gaskets stick up 1/16 to 1/8 inch at the top. So I filed them down to let the valve cover gaskets lay flat.
They also stick out 1/4 inch on one end of the D2 heads.
Maybe the early intake gaskets would have fit better, I don't know.
No leaks though, so far. At least while running. I got some drops of oil out the front when glugging in oil for an oil change.
#13
390
Jake-
My manifold is apparently from a 60's 390. The parts guy told me that, based on the thermostat I needed.
Meanwhile I had already installed heads and manifold using a 73 390 gasket set.
The manifold gaskets stick up 1/16 to 1/8 inch at the top. So I filed them down to let the valve cover gaskets lay flat.
They also stick out 1/4 inch on one end of the D2 heads.
Maybe the early intake gaskets would have fit better, I don't know.
No leaks though, so far. At least while running. I got some drops of oil out the front when glugging in oil for an oil change.
My manifold is apparently from a 60's 390. The parts guy told me that, based on the thermostat I needed.
Meanwhile I had already installed heads and manifold using a 73 390 gasket set.
The manifold gaskets stick up 1/16 to 1/8 inch at the top. So I filed them down to let the valve cover gaskets lay flat.
They also stick out 1/4 inch on one end of the D2 heads.
Maybe the early intake gaskets would have fit better, I don't know.
No leaks though, so far. At least while running. I got some drops of oil out the front when glugging in oil for an oil change.
#14
Jake- right, I think I got the gaskets about right. And I used some "right stuff" rtv after reading about it on here. The pitting was pretty severe. The temperature stays right at 195 like the thermostat says.
I have one small oil drip from the passenger side rear of the valve cover. I may pull that one day and see what is up. Just guessing, but maybe the manifold stands up shorter or taller than the head surface right there...or maybe the manifold gasket still sticks up and needs more filing.
I put my foot in it on the freeway yesterday and there was strong pull with some light stumble. Felt like timing. You wouldn't hear pinging over the exhaust. I had the timing at 14 and this morning I set it back to 10 with the vacuum disconnected. I haven't had a chance to test it yet.
I have one small oil drip from the passenger side rear of the valve cover. I may pull that one day and see what is up. Just guessing, but maybe the manifold stands up shorter or taller than the head surface right there...or maybe the manifold gasket still sticks up and needs more filing.
I put my foot in it on the freeway yesterday and there was strong pull with some light stumble. Felt like timing. You wouldn't hear pinging over the exhaust. I had the timing at 14 and this morning I set it back to 10 with the vacuum disconnected. I haven't had a chance to test it yet.
#15
Right on
Jake- right, I think I got the gaskets about right. And I used some "right stuff" rtv after reading about it on here. The pitting was pretty severe. The temperature stays right at 195 like the thermostat says.
I have one small oil drip from the passenger side rear of the valve cover. I may pull that one day and see what is up. Just guessing, but maybe the manifold stands up shorter or taller than the head surface right there...or maybe the manifold gasket still sticks up and needs more filing.
I put my foot in it on the freeway yesterday and there was strong pull with some light stumble. Felt like timing. You wouldn't hear pinging over the exhaust. I had the timing at 14 and this morning I set it back to 10 with the vacuum disconnected. I haven't had a chance to test it yet.
I have one small oil drip from the passenger side rear of the valve cover. I may pull that one day and see what is up. Just guessing, but maybe the manifold stands up shorter or taller than the head surface right there...or maybe the manifold gasket still sticks up and needs more filing.
I put my foot in it on the freeway yesterday and there was strong pull with some light stumble. Felt like timing. You wouldn't hear pinging over the exhaust. I had the timing at 14 and this morning I set it back to 10 with the vacuum disconnected. I haven't had a chance to test it yet.
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