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08-21-2018, 03:29 PM | #1 |
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Intake Manifold differences
Can anyone educate me on the differences in the early cast intake manifolds? I'm looking for an original cast iron intake manifold for a '35 rebuild. Will the earlier or later ones to '35 be identical? Anyone have one for sale?
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08-21-2018, 04:28 PM | #2 |
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Re: Intake Manifold differences
1935 intake manifolds were aluminum.
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08-21-2018, 04:51 PM | #3 |
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Re: Intake Manifold differences
Truck Intake manifolds and replacement 35s were cast. I have a very good one for sale.
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08-22-2018, 10:16 PM | #4 |
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Re: Intake Manifold differences
Does this apply to 1936 as well? My car currently has a cast iron manifold.
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08-22-2018, 10:40 PM | #5 |
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Re: Intake Manifold differences
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08-22-2018, 11:01 PM | #6 |
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Re: Intake Manifold differences
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08-23-2018, 05:26 PM | #7 |
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Re: Intake Manifold differences
A lot of early aluminum manifold Burnt thru at the exhaust crossover requiring a replacement , by that time cast iron was it .
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08-24-2018, 08:58 AM | #8 |
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Re: Intake Manifold differences
Ah, ok.. It seems as though a lot of heads were replaced after 10 years or so of service. At least I see a lot of date codes on 21 stud heads from 1946 or 47 as well.
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08-24-2018, 09:23 PM | #9 |
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Re: Intake Manifold differences
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08-24-2018, 09:44 PM | #10 |
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Re: Intake Manifold differences
All I can add is that I bought a '36 3 window about 25 years ago that had a '34 engine. It had cast iron heads that were dated, IIRC, 3-47 and 4-47, which seems to coincide with what "tgarner317" posted.
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08-24-2018, 10:22 PM | #11 | |
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Re: Intake Manifold differences
Quote:
isn't this thread about intakes? not heads? Yes intakes can be replaced like engines, heads, etc. Didn't know this was questioned. Last edited by Tinker; 08-24-2018 at 10:37 PM. |
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08-24-2018, 10:37 PM | #12 |
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Re: Intake Manifold differences
Actually, it comes down to the longevity differences between aluminum and cast iron components on the mid-30's engines. With heads and intake manifolds, one explains the other.
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08-24-2018, 10:39 PM | #13 |
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Re: Intake Manifold differences
My 36 has an aluminum intake and iron heads. I would think heads would be more apt to ruin.
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08-25-2018, 10:06 AM | #14 |
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Re: Intake Manifold differences
Ford made new cylinder head castings for the 24-stud blocks after the war but they were 41A types. I'm not sure if they made any replacement stuff for the 21-stud engines in that time frame. A lot of folks just installed a later engine if the old one cratered out.
The weak link on the intakes made from aluminum was the exhaust cross over heat riser. Engine exhaust is erosive and that early type aluminum was not very robust. The truck engines were likely where they started to have problems first. Last edited by rotorwrench; 08-26-2018 at 09:56 AM. |
08-25-2018, 11:23 AM | #15 |
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Re: Intake Manifold differences
Isn`t there a difference in the generator mount for the generator mounted fan? Making later than 39? (deluxe) different?
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08-25-2018, 02:53 PM | #16 |
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Re: Intake Manifold differences
Yes there is! My 1939 PU had an intake that was too high. The PO had cut down the generator mounted fan blades to clear the top radiator tank. I forget which year manifold that I got to fit, but I do remember that the base for the carb was more VEE shaped than the old intake. New intake is iron, don't remember what the original was.
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08-25-2018, 08:57 PM | #17 | |
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Re: Intake Manifold differences
Quote:
I have iron heads on my 36, i'll check any markings and add here. I don't think anyone today needs to run the crossover on the intake. Put a penny in it (or a couple tin .01 shims, won't need to replace your gasket if its newish). It adds heat to the carb. back in the day these are cars design for everyone, even people drove at -20 degrees. Not so today ever. Block off the crossover and worry less about the vapor lock fable. |
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08-25-2018, 09:01 PM | #18 | |
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Re: Intake Manifold differences
Quote:
39 is iron and a better intake. Lots of different gen mounts over the yrs. Someone can add better info on actually dimensions length/height. fuel pump lengths are very different also. |
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08-26-2018, 04:52 PM | #19 | |
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Re: Intake Manifold differences
Quote:
Some picts of my 36 with iron heads and an aluminum intake. |
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08-27-2018, 11:01 AM | #20 |
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Re: Intake Manifold differences
Fordman, You might acknowledge if you received the intake pictures I sent , you requested.
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