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Old 11-05-2012, 03:44 PM   #1
supershaft OP
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Joined: Sep 2010
Location: San Francisco Bay area
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Velocity stack sources?

I found one that has even close to what I am lookng for. Do you guys know of any out there?
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Old 11-05-2012, 03:53 PM   #2
Houseoffubar
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I looked around, and did not see much either. do you have some dimensions? I may be able to make a set for you.
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Old 11-05-2012, 04:04 PM   #3
bikerfish
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you know everyone is gonna tell you your gonna blow up your engine! but, I'd like to know a good source as well, hell with the engine!
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Old 11-05-2012, 04:23 PM   #4
Renner
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maybe somewhere here:
http://www.piercemanifolds.com/product_p/52840.001.htm
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Old 11-05-2012, 05:01 PM   #5
Voltaire
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http://www.bevelheaven.com/
I just ordered one for my 36's as it fell off during a race recently.....wondered why the guy passing me was waving.....

They have the 40 mm ones on special, I'm going to wire them on now.
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Old 11-05-2012, 05:39 PM   #6
supershaft OP
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People have been telling me that I am going to blow up my engine for at least 40 years now. "You can't do that!" "That will never work!" It's a good thing I am pretty adept at knowing who to listen to.

After looking for stacks I decided to try again with my cut off stock ones. Maybe it will work this time.

First off I need to find some aluminum tubing and machine a longer velocity stack/snorkel junction. The same thing as stock but with a 3/4" longer smaller OD. Then I can use the first half inch of the stock stack to hold the junction in place and then hose clamp on a stack from the inside of the box. I basically need just a bell mouth in order to keep it as short as possible because I already have the length of the snorkel. 49.7mm ID and about as short as possible is what I need.

supershaft screwed with this post 11-05-2012 at 07:36 PM
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Old 11-05-2012, 07:16 PM   #7
Big Bamboo
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Try your local Midas muffler dealer or similar. The have the stock and could fab you up something.
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Old 11-05-2012, 07:30 PM   #8
supershaft OP
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Thanks guys because now after going back and forth a few times and now having a shorter stack setup that so far hasn't bounced loose, I am 110% sure that it is running way stronger everywhere above 3k rpm with the shorter stacks. Big diff! Way more intake noise too but so be it. If I can't get the rubber stacks to stay put, I am definitely going to fab a setup for some metal bell mouths. That's really all I need and what I am going to call them from here on out since my snorkels are the 'stack' portion of my stacks. If that makes sense!

I hope I am helping someone out there but remember that I have already done a bunch of mods before I got to moding my airbox setup. Before the raised CR and port work what I have done would have KILLED my midrange! But not now. It is a different animal now! My setup has tons more midrange now! The best thing about 336's! Yea!
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Old 11-05-2012, 09:01 PM   #9
Uncle Pollo
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Why?
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Old 11-05-2012, 09:58 PM   #10
supershaft OP
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8.5:1 to a guestimated 10.0:1 CR. 44mm intake valves in place of 42's with a lot of port reshaping. Dual plugs with two .7 ohm Dyna coils with the stock bean can advance curve remapped. All on top of a lot of mods I had done earlier. Then I basically eliminated the top of my square airbox and shortened the stock velocity stacks by three of four inches for even more.
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Old 11-06-2012, 01:52 AM   #11
pommie john
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I bought mine from here. They're in Australia but they might send them to the USA

http://www.jntperformance.com.au/index_c269035.html
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Old 11-06-2012, 07:01 AM   #12
US_Marshall
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I picked up some off the Bay. $50 for 4 off them, allows you a couple spares to work with.

http://www.ebay.com/itm/400319735164



The one on the left (right carb) has a filter I made from an extra K&N, it is too restrictive. The one on the right (left carb) is just a screen.
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Old 11-06-2012, 07:11 AM   #13
RGregor
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Quote:
Originally Posted by supershaft View Post
I found one that has even close to what I am lookng for. Do you guys know of any out there?
This guy over here would make them according to your specs.

http://www.mactrumpet.de/

Don't know if he ships to the USA.
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Old 11-06-2012, 07:15 AM   #14
backdrifter
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This place seems to have quite a bit of custom velocity stacks available. Their prices seem pretty reasonable too.

http://www.velocity-of-sound.com/
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Old 11-06-2012, 02:20 PM   #15
supershaft OP
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Quote:
Originally Posted by pommie john View Post
I bought mine from here. They're in Australia but they might send them to the USA

http://www.jntperformance.com.au/index_c269035.html
Thanks pj! I haven't looked through them all yet but so far they are IMO the best looking ones I have seen. I could be wrong but I am thinking that style bell mouth works the best. It also happens to be real close to what BMW used in rubber.

I should have waited until I read everyone's posts! Thanks everyone! Some good sources!

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