40Club Posted February 15, 2021 Report Share Posted February 15, 2021 Pete what is the 6th intake up on the right and what's it for? Quote Link to comment Share on other sites More sharing options...
Andydodge Posted February 15, 2021 Report Share Posted February 15, 2021 At a guess I'd say its to suit the F head conversion that Earl Edgerton developed........andyd Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted February 21, 2021 Report Share Posted February 21, 2021 On 1/30/2021 at 10:09 AM, MoparMontana said: Wow! Impressive work. I have a Holley Sniper EFI on my DeSoto. I was never happy with the carburetion with the blow-through supercharger, especially since the old McCulloch is a VS (variable speed) that adjusts boost with load (via a vacuum switch). EFI is the the hot ticket. I am basically working on the same thing as Sniper on my 265. But, I am building and adapter for my Edmunds Manifold to mount a single Sniper 2BBL on it. I am also thinking of using a VS-57. Can you talk a little bit more on using that with a flathead? I know that Holley is making a 2BBL sniper that is set up for using a blower or turbo. JAmes Quote Link to comment Share on other sites More sharing options...
MoparMontana Posted February 21, 2021 Report Share Posted February 21, 2021 (edited) 26 minutes ago, James_Douglas said: I am basically working on the same thing as Sniper on my 265. But, I am building and adapter for my Edmunds Manifold to mount a single Sniper 2BBL on it. I am also thinking of using a VS-57. Can you talk a little bit more on using that with a flathead? I know that Holley is making a 2BBL sniper that is set up for using a blower or turbo. JAmes The Holley 2300 series Sniper has a MAP sensor and sealed throttle shaft, so yes it is compatible with a blow-through configuration. Remember that because of the low RPMs that these engines typically operate at, you will need a BIG crank pulley to get adequate boost. My car is over in storage and I could only find a few photos on my laptop, but this will give you the basic idea. There is also an old video on my YouTube channel "MoparMontana" of when I was blowing through Strombergs. It looked cool but was a total mess. Note that my motor has an EDGY F-head on it so it looks odd, but the configuration for the blower bracketry would basically be the same. We have been running a blowthrough with a carb and Vortech supercharger on out Bonneville Dodge four banger since 2010, so I have quite a bit of experience (and made a lot of mistakes). Edited February 21, 2021 by MoparMontana Quote Link to comment Share on other sites More sharing options...
MoparMontana Posted February 21, 2021 Report Share Posted February 21, 2021 (edited) FLATHEADS LOVE BOOST! Edited February 21, 2021 by MoparMontana 1 Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted February 22, 2021 Report Share Posted February 22, 2021 What size crank pulley did you use. Stock is something like 7 inches... James Quote Link to comment Share on other sites More sharing options...
James_Douglas Posted March 7, 2021 Report Share Posted March 7, 2021 I do hope at some point you will swing back and talk more about the VS-57 on the Flathead. I know that is was used on Kaiser six and used a 7-1/2 inch pulley and ran at 4 pounds of boost. Your comments about the low RPM engine and the need for a large pulley have me scratching my head a little. I have a stock industrial pulley that is 7 inches. Period accounts show that the Kaiser went from 114 HP to 140 with the 7-1/2 inch pulley and 4 pounds of boost. I suspect that a 265 six with a good street cam could hit 140 to 150 with that same 4 pounds. For me in the 5000 pound Suburban, that would be just fine... With a Sniper and a computer controlling the ignition and a VS-57, I am hoping to have enough power to go over the mountains without dropping to 35 MPH every time someone cuts me off and slows down. I cannot over exaggerate the difference is between my 3700 pound '49 Convertible and my 4700 pound suburban even though that have the same 251 in each of them. Same engine, but over the mountains a large difference that 1000 pounds make. James Quote Link to comment Share on other sites More sharing options...
Sniper Posted March 7, 2021 Report Share Posted March 7, 2021 I imagine the Suburban has a larger frontal area making air drag more a factor as well. Quote Link to comment Share on other sites More sharing options...
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