I just received the New Aluminum Intake Manifold  I ordered from Blue Thunder. This is a new Item for them. Exact Copy of the ECZ-B Manifold except it is Aluminum. Not a high Performance One as stated in Listing on Ebay. Just a stock replacement Manifold. Why am I spending Money on a stock Manifold? Couple of Reasons. MUCH Lighter than the Cast Iron One. About 15 Pounds. I expect it will also help with cooling as Aluminum does not retain Heat the way Cast Iron does. I am very impressed with the finishing on this Manifold. Blue Thunder has a pretty good reputation for Quality Products  I think. I have an Aluminum Mummert Valley Pan to go on my Project and now a little more Bling with the Intake.

  

I think you have one of the new intakes from overseas, not a Blue Thunder.  Unless he has changed his molds, the Blue Thunder has the part number and the newest version has the firing order on them.  Just an observation.  Joe-JDC

JDC

These are cast You Know where and finished in USA. They are not labelled as Blue Thunder but finished and sold by Blue Thunder People. Marketed as a stock replacement  non Performance Manifold. See Listing on Ebay. Just what I wanted for stock rebuild.

  

As long as you didn't pay Blue Thunder prices for it, then all is good.  Selling locally for ~$200-225.00 US.  Hate to see anyone get ripped off.  Joe-JDC

JDC

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Aluminum, like all metals, is a conductor. It will heat up faster than cast iron, but it will also cool down faster. When hot, it will retain heat, just as any conductor would. I particularly recall a recommendation to use a phenolic carburetor spacer whenever both manifold and carburetor are made of aluminum, but I don't remember the source. As far as weight saving is concerned, I guess that's a plus when it comes time to install/remove it, or if you plan on racing. 

Definitely a TSP manifold. Mis-matched runner floor and oblong water port are pretty good tells of that. It's a nice manifold for the price. Currently in stock but have gone up to $285 since their last batch a few months back. 


https://topstreetperformance.com/products/1955-1957-ford-thunderbird-4-barrel-4v-aluminum-intake-manifold-ecb-9425-b-272-292-312-satin?srsltid=AfmBOorUiLeJK8DjsNfhmaLS9fYP8-Pm-8PtDFVTDQewsVEs9fSWMc-6