Cherry Bomb glasspacks - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 03-13-2009, 09:43 AM
Steven
 
Last photo:
Join Date: Mar 2009
Location: Garland, Tx
Age: 24
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Cherry Bomb glasspacks

I have a 1958 Chevy Apache with a 350sbc under the hood. 4 barrel carb, edelbrock valve covers, and one ****ty *** exhaust. yes its loud for me but the dual 1" straights are not gonna cut it. They have some mufflers which are pretty warn out by now. I am now looking to upgrade aka over haul the exhaust. OH I WILL EB WELDING THIS ALL UP MYSELF.

I am thinking my 4-1 headers with 2" tubing for the exhaust and glasspacks under the bed. then have the tips come rite under the roll pan so you will not see much of the tips.

what does everyone think about this? should i go with 2.5" tubing for the exhaust?



I have tons of Noob questions lol.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 03-13-2009, 10:24 AM
DoubleVision's Avatar
Not Considered a Senior Member
 
Last photo:
Join Date: Oct 2002
Location: Heart Of Dixie
Age: 40
Posts: 10,657
Wiki Edits: 0

Thanks: 15
Thanked 60 Times in 57 Posts
Your engine info is somewhat sketchy but either way I would use the 2.5 pipes. I would also weld in a X pipe.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-13-2009, 10:44 AM
How fast is fast enough?
 
Last photo:
Join Date: Jun 2005
Location: St. Louis, MO
Age: 29
Posts: 9,490
Wiki Edits: 0

Thanks: 20
Thanked 392 Times in 366 Posts
Taht depends a lot on cam duration split. If its a single pattern go with the 2.5" if its a stock or a dual pattern go with 2".
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-13-2009, 12:21 PM
Steven
 
Last photo:
Join Date: Mar 2009
Location: Garland, Tx
Age: 24
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Explain skatchy if you will, I am noob status to V8 motors and just know very very little to be honest. What is the point of a X pipe exactly? Cam duration split?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-13-2009, 01:38 PM
curtis73's Avatar
Hates: Liver. Loves: Diesel
 
Last wiki edit: How to find cheap parts
Last journal entry: Found an LQ9 today
Last photo:
Join Date: Dec 2005
Location: Carlisle, PA
Age: 41
Posts: 5,320
Wiki Edits: 16

Thanks: 20
Thanked 26 Times in 20 Posts
Do some research on glasspacks. Some of them flow terribly and will restrict the exhaust no matter what size you use. Others are very free-flowing. But (as with any straight-through muffler) the more they flow, the louder they are. Getting adequate flow might mean they will be VERY loud with a lot of interior noise.

Cheap parts store glasspacks are loud and flow poorly. Companies like Heartthrob have several glasspack designs that range from poor flow/quiet up to really high flow/really loud.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 03-13-2009, 02:34 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,334
Wiki Edits: 326

Thanks: 844
Thanked 1,163 Times in 959 Posts
An X pipe will help to equalize the exhaust pulses from one bank of the motor to the other, resulting in a better sound than either no X pipe or an H pipe. Install the X after the header collectors but before the mufflers.

The key to a good sounding glasspak system is to use 36" long mufflers. Anything shorter will give you a raucous, "blatty" sound. Get the mufflers with louvers punched into the inner pipe instead of plain round holes and install the mufflers with the louver openings facing the front of the truck. If they have baffles in them, use a 4-5 ft. length of metal pipe to bang the baffles out. They are just tack welded in.

With a warmed over 350, 2" or 2 1/4" will be fine, but while you're doing it, you may as well go to 2 1/2" if you plan further improvements to the motor.

Your plan to extend the pipes to the rear of the truck sounds well-thought-out to me. I've seen fellows terminate the pipes under the truck and the exhaust pulses will reverberate against the sheet metal under the truck. This will set up a drone in the cab that will sound cool for about 10 minutes. After that it will make you nuts and you won't want to drive the truck any more.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 03-13-2009, 03:31 PM
Jake_Dragon's Avatar
Member
 

Last journal entry: New Carb
Last photo:
Join Date: Jul 2005
Location: Central Florida
Age: 49
Posts: 772
Wiki Edits: 0

Thanks: 2
Thanked 2 Times in 2 Posts
http://www.jegs.com/p/Moroso/744819/10002/-1

I have these on my car 2 1/2 in and out Shorty headers true duels.
They do drone at 60 but I think thats more due to the short exhaust than the muffler.
Good thing is they wont blow out like glass packs.
http://www.youtube.com/watch?v=GnDrDs225EI
I have some exhaust resonant tips that should help with the drone.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 03-14-2009, 09:37 AM
Steven
 
Last photo:
Join Date: Mar 2009
Location: Garland, Tx
Age: 24
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I think I'm gonna throw some spark plugs in the mix for a little flame thrower fun too. I can't wait to get this done! I better go pick up some fence tubing.
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 03-14-2009, 04:28 PM
BowTiePride's Avatar
Chevy to the death!
 
Join Date: Nov 2008
Location: Calgary, Canada
Posts: 100
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
What're the benefits and drawbacks of running an X pipe vs. an H pipe? remeber to keep the bends paralell on both sides, and keep everything equal length
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 03-14-2009, 05:23 PM
Registered User
 
Last wiki edit: How to title a hot rod Last photo:
Join Date: Feb 2007
Location: West Virginia
Age: 25
Posts: 3,393
Wiki Edits: 8

Thanks: 16
Thanked 1 Time in 1 Post
H & X pipes increase power,give a smoother sound(ever hear straight pipes that dont crackle like firecrackers in a tin can? Mine dont),they also reduce the noise.

downside possibility of clearance issues.
Shane
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 03-15-2009, 07:14 PM
Steven
 
Last photo:
Join Date: Mar 2009
Location: Garland, Tx
Age: 24
Posts: 30
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Now I learning to weld and bend metal like a pro. So if the pipes are 2.5" then what size tubing should I use to make the headers?
Reply With Quote Quick reply to this message
  #12 (permalink)  
Old 03-15-2009, 08:23 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 13,334
Wiki Edits: 326

Thanks: 844
Thanked 1,163 Times in 959 Posts
Quote:
Originally Posted by Apache_Boy
Now I learning to weld and bend metal like a pro. So if the pipes are 2.5" then what size tubing should I use to make the headers?
1 5/8" if you plan no further improvements to the motor. 1 3/4" if you have plans for further improvements.
Reply With Quote Quick reply to this message

Recent Engine posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cherry Bomb Turbo II mufflers: Are they any good? Jyzoz Engine 8 05-20-2008 05:00 PM
cherry bomb pro 47chevrolet Engine 4 02-28-2007 09:45 PM
cherry bomb 47chevrolet Engine 12 02-20-2007 08:37 PM
Cherry Bomb Mufflers CrazyRoyExhaustfreak Engine 3 10-12-2006 12:51 PM
Alright...I JUST don't get it?! Weimer Hotrodders' Lounge 295 02-18-2003 06:46 AM


All times are GMT -6. The time now is 03:13 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.