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#1 |
Registered User
Join Date: May 2011
Location: Fort Pierce, FL
Posts: 430
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72 350 intake hot air passages blocked
I am installing a crate 350 to re-place my original 350 that died. I will use my original intake and Q-jet. My intake center passage under the carb is filled, as is the center in my original heads which I am not going to use.
The new engine heads are NOT filled in the center. Will I have any issues if I install the intake with the passage filled on heads that are open there? I live in south Florida so getting the carb warmed up has never been an issue. |
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#2 |
Registered User
Join Date: Apr 2011
Location: Fairview Park, Ohio
Posts: 1,031
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Re: 72 350 intake hot air passages blocked
Post a pic.
When I put in edelbrock intake the firewall passages were blocked off That's how I remember it anyway. Mark
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My build page http://67-72chevytrucks.com/vboard/s...d.php?t=764662 My cabinet building site http://www.cbcabinets.com |
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#3 |
Registered User
Join Date: Jul 2012
Location: Marshall, NC....heart of the Appalachians.....aka, Gods country!!
Posts: 537
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Re: 72 350 intake hot air passages blocked
shouldn't be any issues, just heat passages to warm the carb in cold weather.....shouldn't be a problem in FL. May want to run the thick Qjet base gasket to prevent heat soak of the carb but I wouldn't have any worries with that combo.
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#4 |
Senior Member
![]() Join Date: Feb 2010
Location: Falls City, Nebraska "100 Miles From Nowhere"
Posts: 2,219
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Re: 72 350 intake hot air passages blocked
I would clean the intake and block off the openings with the stainless block offs that come with the intake gaskets. My motor wont go until that intake is warmed up summer or winter. Just don't take as long when it's 80 or 90 out. Cleaning and using the block offs will help the intake maintain a stable lower temp, warm is good, hot is not and a solid core will hold the heat while the rest of the intake is cooler. Wont kill the motor but it will rob some power by heating the charge to the center four cylinders and possibly overheat the carb...
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Michael of the clan Hill, "Two Seventy Two's" 71 1-ton Dually 350 4-Speed 71 C/50 Grain Truck, 350 Split-Axle 4-Speed 02 3/4 ton Express 14 Indian Chief Vintage 1952 Ford 8N, "Only Ford Allowed On The Property" ![]() "Be American, Buy American" ![]() |
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#5 |
Senior Member
![]() Join Date: Oct 2013
Location: Santa Paula, CA
Posts: 600
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Re: 72 350 intake hot air passages blocked
If you're using the stock cast iron intake on the newer crate motor and the exhaust crossover ports are filled in the stock cast iron intake then I would suggest an intake manifold gasket WITHOUT the exhaust crossover port provision. I've heard of the intake manifold gaskets where people put the restrictor plates in and had the plates burn through over time. The gaskets are available with or without these ports. The gaskets with out the ports will hold up much better over time and help against any vacuum leaks from developing due to the inserts possibly moving or blowing out. Just my .02 sense.
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1972 C/10 LWB - Mine 1964 C/10 LWB - My Dad's Instagram: Mike_The_Grad |
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#6 |
Registered User
Join Date: May 2011
Location: Fort Pierce, FL
Posts: 430
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Re: 72 350 intake hot air passages blocked
Thanks for the comments. Just to restate, the original intake is filled, the new heads on the engine are not. Is that hot air exhaust, or what? So I should get intake gaskets that block the port to insure a good seal.
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#7 |
Senior Member
![]() Join Date: Oct 2013
Location: Santa Paula, CA
Posts: 600
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Re: 72 350 intake hot air passages blocked
I would recommend it yes. I was recommended to do it when I was replacing my intake manifold, haven't had any issues yet.
__________________
1972 C/10 LWB - Mine 1964 C/10 LWB - My Dad's Instagram: Mike_The_Grad |
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