471 Blower intake manifold


http://forums.y-blocksforever.com/Topic80044.aspx
Print Topic | Close Window

By John Mummert - 11 Years Ago
Got an email from Lindsay Shoemark in OZ. He has finished some new blower intake manifolds for the 471 GMC style blowers. Probably similar to the old Cragar that are nearly impossible to find. Blow off plates on the sides and integral thermostat housing.Will post pics as soon as I can reduce size. Of the pics that is, no hope for me.
By MoonShadow - 11 Years Ago
I got the pictures too so here they are:


http://forums.y-blocksforever.com/Uploads/Images/485abf0e-67b1-432d-bea4-61b6.jpg

http://forums.y-blocksforever.com/Uploads/Images/798e3b92-bdf4-481a-b4f1-4abb.jpg

http://forums.y-blocksforever.com/Uploads/Images/e0333fec-19e3-4ae7-a2b7-52a1.jpg

http://forums.y-blocksforever.com/Uploads/Images/6df65f0e-c05b-4045-b66e-ce20.jpg
By Glen Henderson - 11 Years Ago
Wow looks good, any idea on price Chuck?
By 5d6fairlane - 11 Years Ago
Now available, high lustre aluminium Yblock 4-71 blower at $975 each
This Ybloke intake is cast from high quality aluminium ingots and has the following features:
1)   Factory Ford 4BBL intake height
2)   All factory hold down points (including either side of water crossover)
3)   Factory thermostat mount and position
4)   Gas threaded pressure gauge port (rear of manifold)
5)   Large plenum with smooth transition to intake runners
6)   Optional - Threaded mounts to allow 4BBL adapter to be fitted to manifold with or without blower
7)   Optional - Single or twin pop-off valves to either side of plenum (allows for adjustment without the need to remove blower)
8)   Optional - adapter plate 'steady' on thermostat housing (for non 4-71 blower applications)
9)   Optional - drilled and tapped mounts for 3-71 blower (requires adapter plate)
The Ybloke manifold has been more that a year in the making.
Every endevor has been undertaken to deliver a quality manifold with features not previously available.
Stocks are limited.
Postage (fully insured), at cost, with a small packaging fee is available.
Paypal or direct bank deposit is available (Paypal fee extra)
Please do not hesitate to ask for clarification on any aspects of the manifold not covered above
By bird55 - 11 Years Ago
WOW, that's cool. Interesting that it has an optional 4 barrel adapter too.
By Glen Henderson - 11 Years Ago
Not a bad price considering it is a low production part, I think a Hogan fab'ed intake is close to 3 grand.
By kevink1955 - 11 Years Ago
Am I wrong or does the side mounted blow off plate discharge the fuel/air mixture if you go over your design boost pressure. What keeps this perfectly mixed discharge from exploding when it meets a random spark or red hot header under the hood?

Scares me big time
By 5d6fairlane - 11 Years Ago
I believe thats there in case of a back fire.
By MoonShadow - 11 Years Ago
I never considered that the backfire valve sent a shot of the air/fuel mixture directly out over the engine. I guess a small flash fire under the hood is better than a blower through it? w00t Chuck
By wlj1943 - 11 Years Ago
Nice job, and apparently well designed. Looks like a quality piece.

When one runs a roots style (GM or other) blower, unlike a centrifugal huffer ( EG turbo or McCullough) you have a positive displacement device ( think a rotating piston). As there is a significant volume of air/fuel mixture below the blower, a backfire event can develop enough pressure under the blower to launch the whole shebang through the hood or even through the dyno room roof towards the moon ( I saw the afterwards result once; thankfully not on my shift).

The lakes guys and drag racers discovered this just after WW2, and by the mid 50's blow-off plates or valves were required by most all sanctioning bodies. The design using springs is likely best for street usage as it is self-resetting and most often you just restart and can keep on running. Plates by design must be replaced, bummer for a road machine. The fire out of the plate ends quickly, likely no more than one second unless something else inside broke, and of course ends when the valve reseats. It does get your attention when it occurs. I suggest carrying a spare set of underwear.
WLJ



By slick56 - 10 Years Ago



Lindsay Shoemark has just finished his blower intakes with a modified pop off valve.

http://forums.y-blocksforever.com/Uploads/Images/6cd171fd-b220-415d-9c3b-c09a.jpg

http://forums.y-blocksforever.com/Uploads/Images/63d3e8c2-2209-4fa7-8705-44f3.jpg


He also makes the Mercury valve covers.

http://forums.y-blocksforever.com/Uploads/Images/8cf05c08-e258-4014-b8d8-f4e2.jpg


ybloke56@hotmail.com

.
By CK and his 55Tbird - 10 Years Ago
I meet Lindsay today at the Ballarat swap meet.His manifold looks high quality and is working on a complete Mercury blower kit, which includes optional pulleys and snout, etc.
It was good to meet a guy from the forum, he seemed to be a nice bloke.
By ybloke - 10 Years Ago
Hello all
After many months of frustrating efforts to get on to this forum, finally with the help of my daughters IPad it seems contact has been reestablished....
First, I will make a commitment to add to this forum the recent activities, images and drive and component specifications. I will do my best, as my skill with the iPad still has some distance to go before I can do all I intend.
Next
The big news is that I have been bringing together all the components to build a blown 292 Yblock using the ybloke blower intake...
And
I am pleased to announce the safe arrival of the Ybloke 4-71 supercharged 292 Yblock...

Further it only tookm an hour and a half to convert a naturally aspirated 4BBL 292 Yblock to a supercharged 4BBL 292 Yblock.
Once converted the 4-71 supercharged yblock started and idled without fuss...

My son Lee came around on the weekend and shot a GoPro video which turned out great. The video is on YouTube...
Search YouTube for : Ford Y block 4/71 supercharged ybloke blower intake ( I don' t know how to paste a long with an iPad )

Or
Go to my Facebook page (you do not have to be a member) Facebook.com/ybloke
There are about 60 images to get your imagination ignited....
And there is a video of the 292 Running naturally aspirated with the ybloke supercharger manifold with 4-71 to 4BBL adapter plate....
And there is a link to the YouTube video of the same engine NOW SUPERCHARGED, the video is 4 minutes of heavenly yblock tunes played through zoomies... There is just nothing else like it to be found on YouTube or anywhere else.. Enjoy, and if you feel the video and/or Facebook page rates it... Please leave a like...

I'm back
Regards, Lindsay

By ybloke - 10 Years Ago

Ybloke MUST SEE.... GM 4-71 Supercharged 292 Yblock using Ybloke blower intake manifold
Here is an attempted link to YouTube
http://www.youtube.com/watch?v=Nrj0S6jF40c&sns=em
This is really something else....
Ybloke
By MoonShadow - 10 Years Ago
What length drive snout did you use? It looks shorter than mine but I'm running a two belt balancer for accessories. I used a 7" with a 2" extension. Not sure yet if I'll have clearance problems with the radiator. Did you take any pictures of the crank adapter you came up with? Chuck
By Glen Henderson - 10 Years Ago
Oh that is sweet! It sure would look awesome in the Rebel Rouser!
By lyonroad - 10 Years Ago
You asked for it Lindsay.  I like that video!
By Rono - 10 Years Ago
VERY nice set up...well done!!

Rono
By Ronnie Brooks - 10 Years Ago
I Absolutely Love The Thought Of Owning A Blown Y-Block! Running 2x4's On Mine Right Now. Motors Down The Highway real Nice. Love the Y-Blocks, And The Flatheads!

[quote][/quote]