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By capelo - 5 Years Ago
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Hi, I do not know if this is the right place to do the consultation, the fact is that I need a four barrels intanke manifold, I had thought about Mummert, but I have been waiting for more than a month since it seems that they do not have stock and They do not tell me when they will have, someone knows where to find one of the same characteristics, thank you
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By oldcarmark - 5 Years Ago
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This is the correct Forum for these Types of questions. Check Ebay for "Blue Thunder" Manifold. They CLAIM that theirs is superior vs the Mummert Manifold. I believe their Price is higher though.
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By MoonShadow - 5 Years Ago
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From what I know I don't think there is much comparison between them. John Mummert has been pursuing improvements on his intake since the first one hit his bench. Each new casting is an evolution in flow. Also John is an avid Y-Block guy that has been creating parts for our favorite engine for years. His aluminum heads for example and stroker package. Not to mention the amount of advice he and his son both give out for no fee. When I'm looking for Y-Block specific non-stock parts I always go to Mummert even if he is a little more expensive at times I think he deserves our support for all he's done.
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By charliemccraney - 5 Years Ago
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Performance wise, Blue Thunder and Mummert are very close, with the Mummert intake possibly having the edge.
Blue thunder do make improvements. They got rid of the slot in a more recent version and it sounds like they may add dimples or ridges on the plenum floor, soon.
In this thread, you can see an earlier version with the slot, http://forums.y-blocksforever.com/Topic133096.aspx.
Ted wrote an article in the last year or two testing a Blue thunder modified with dimples and without the slot. I can look at my issues to see which but Ted might know right away when he sees this. With that mod, the two intakes are extremely close.
One possible benefit of the Blue thunder is the inclusion of the exhaust passage under the plenum, which may be beneficial to those in cooler climates. That also may contribute to the additional expense - more aluminum and probably more complex tooling.
I do see used Blue Thunders on eBay once in a while, sometimes priced very reasonably.
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By 2721955meteor - 5 Years Ago
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the exhaust passage is a must hear in bc/ canada. have a 57ford manifold 4v, holley runs great sept to june, summer i ty the heat riser open no cold start bogs
se a elect choke. the blue thunder would be my choice,but the ford manifold works great
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By capelo - 5 Years Ago
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MoonShadow (5/14/2019)
From what I know I don't think there is much comparison between them. John Mummert has been pursuing improvements on his intake since the first one hit his bench. Each new casting is an evolution in flow. Also John is an avid Y-Block guy that has been creating parts for our favorite engine for years. His aluminum heads for example and stroker package. Not to mention the amount of advice he and his son both give out for no fee. When I'm looking for Y-Block specific non-stock parts I always go to Mummert even if he is a little more expensive at times I think he deserves our support for all he's done.
I have nothing against, the issue is that it has been over a month without stock of intakes and they do not tell me a specific date to have it and I have a lot of material waiting for shipping ....
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By oldcarmark - 5 Years Ago
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There are no Blue Thunder Manifolds available on Ebay either. Seller sold 5 recently.
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By MoonShadow - 5 Years Ago
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That's true. John is often behind on his stock of parts. Part of dealing with the person that has them made. If you are waiting for parts you may have to go to Blue Thunder or get lucky and find a used one.
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By Genuinerod - 5 Years Ago
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I have a new Blue Thunder manifold that I bought about 10 years ago and never installed. I will sell it for $400.00 plus shipping.
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By capelo - 5 Years Ago
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Genuinerod (5/15/2019)
I have a new Blue Thunder manifold that I bought about 10 years ago and never installed. I will sell it for $400.00 plus shipping.
thanks, I'm waiting for a reply
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By charliemccraney - 5 Years Ago
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I found the thread about the ridges in the plenum floor, http://forums.y-blocksforever.com/Topic133974.aspx
More info in May - June 2018, Vol 25, No. 3, Issue 146 of Y-Block Magazine.
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By capelo - 5 Years Ago
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charliemccraney (5/16/2019)
😉👌
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By PF Arcand - 5 Years Ago
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Mummert's intake may have an edge in performance vs the Blue Thunder, however the Blue is more original looking, which may matter to some & it has under carb heat crossover, that Mummert's doesn't.. Another route for some, particularly if originality is important, may be to find a good condition '57- ECZ-B intake (at a reasonabale price) & if you have a Die Grinder, small metal cutters, epoxy & course long strips of sandpaper belt to remove the sharp corners into the runners & some time & patience, it can be modified to work better than stock. I believe that route has been described here some & also in Y-Block magazine some time ago. I did one about a year or more ago. It takes about 8-10 hours over a couple of days to do it.. Note; that the heat tube in the crossover is often rusted out in old intakes & will need replacement if you plan to use a heat style choke feed...
N.B.- the article on porting a "B" intake, by Doug Thrasher, is in Issue #140, May-June 2017..
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