Mufflers - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Camaro_nut2001 · 10-22-2011, 02:35 PM

Hey fellers, I'm doin a pro-street build on my '69 & need ya'lls opinion on what mufflers to run. Right now I have dual 2" pipe off my headers into Flowmaster 40 series with tail pipes dumpin right behind the rear wheels at kinda an angle down. I'm runnin a .030 over 454, .525 lift cam Lunati 60201LK, old smog oval port heads I want to change, performer RPM with a 3310 vac. secondary and Flowtech headers from Summit. I've read that Flowmasters restrict alot & Dynomax or Borla is a pretty good flowin muffler. I'm wantin to run 3" pipe back to mufflers then a short pipe over the rearend turned down. I'm gonna run a full pos unit & keep my 3.73 gear. My truck will see the drag strip ever once in a while. If I find a set of 781 heads I plan on goin up a couple sizes on my cam, like the Lunati 60203LK & runnin a Hughes 2500 converter in my TH400. What do ya'll think?

djracer · 10-22-2011, 04:35 PM

Bigger heads and exhaust should help. I took 3 inch flowmasters loose from my truck at the track one night and ran open hedders and it picked up a tenth in the eighth mile. I ran dynomax bullets after that! I am gonna run cut outs and 3 inch exhaust on my son's truck. It has a mild 454 and 781's.

Super73 · 10-22-2011, 08:28 PM

There are 2 mufflers I like. The first is a hooker aerochamber and the second is the warlocks.

The aerochamber is quiet yet flow great. Only problem is weight.

The warlocks are like a flowmaster with the chamber design however, you can pull a plug out of them and they are a straight through design at that point. Basically open headers. I was running a 3" x-pipe with the warlocks and electric cutouts on them when I first got the truck going. Sounded awesome.

I decided to shave some weight so I put dual cut outs right off the header, knecked down to 2.5" and hung some turbo mufflers right in front of the rear tires. Light, quiet but can be wide open in seconds.
Posted via Mobile Device

nxtruck · 10-22-2011, 09:00 PM

I'll throw my .02 in. I'm currently running Dynomax Race magnums. They're similar to bullets, only bigger in diameter and quieter. They're a straight-thru type muffler. I picked up 1.5 tenths in the 1/8 just by going from 3 1/2 Flowmasters to these mufflers. My only complaint is how loud the inside of my cab is, but that's not the mufflers' fault. I have them mounted right underneath the cab and after a long cruise, my ears are ringin' pretty good. I plan on moving them back underneath the bed and this should quiet things down inside the cab.
Your plan for running 3" past the axle sounds like a good one, especially if you're going to drive it a lot.

vin63 · 10-22-2011, 11:30 PM

I run Borla (what was then the Shootout mufflers) what are now the XR1 mufflers on my Super Gas car and did many passes with and without the mufflers over nearly 20 seasons for comparison, and there was no performance difference without them. From my experience, they have the best sound attenuation with the least amout of flow restriction.

I run their XL series mufflers on my C-10 and other street hot rod projects.

Camaro_nut2001 · 10-23-2011, 12:26 AM

Quote:

Originally Posted by djracer

Bigger heads and exhaust should help. I took 3 inch flowmasters loose from my truck at the track one night and ran open hedders and it picked up a tenth in the eighth mile. I ran dynomax bullets after that! I am gonna run cut outs and 3 inch exhaust on my son's truck. It has a mild 454 and 781's.

Yep, while my truck is gettin painted I'm gonna have the motor & trans in my garage doin some upgrades to them. I'm watchin CL, Ebay & Racin Junk for some 781 heads that are known to be good. If I find a set I can afford then I'll do the cam & Pete Jackson gear drive swap when I do the heads. I think I'm gonna go with Borla mufflers & 3" pipe from the opinions I've gotten so far. Thank you for your advise.

Camaro_nut2001 · 10-23-2011, 12:30 AM

Quote:

Originally Posted by Super73

There are 2 mufflers I like. The first is a hooker aerochamber and the second is the warlocks.

The aerochamber is quiet yet flow great. Only problem is weight.

The warlocks are like a flowmaster with the chamber design however, you can pull a plug out of them and they are a straight through design at that point. Basically open headers. I was running a 3" x-pipe with the warlocks and electric cutouts on them when I first got the truck going. Sounded awesome.

I decided to shave some weight so I put dual cut outs right off the header, knecked down to 2.5" and hung some turbo mufflers right in front of the rear tires. Light, quiet but can be wide open in seconds.
Posted via Mobile Device

Quote:

Originally Posted by nxtruck

I'll throw my .02 in. I'm currently running Dynomax Race magnums. They're similar to bullets, only bigger in diameter and quieter. They're a straight-thru type muffler. I picked up 1.5 tenths in the 1/8 just by going from 3 1/2 Flowmasters to these mufflers. My only complaint is how loud the inside of my cab is, but that's not the mufflers' fault. I have them mounted right underneath the cab and after a long cruise, my ears are ringin' pretty good. I plan on moving them back underneath the bed and this should quiet things down inside the cab.
Your plan for running 3" past the axle sounds like a good one, especially if you're going to drive it a lot.

Quote:

Originally Posted by vin63

I run Borla (what was then the Shootout mufflers) what are now the XR1 mufflers on my Super Gas car and did many passes with and without the mufflers over nearly 20 seasons for comparison, and there was no performance difference without them. From my experience, they have the best sound attenuation with the least amout of flow restriction.

I run their XL series mufflers on my C-10 and other street hot rod projects.

Borla mufflers it is! Thank ya'll very much.

djracer · 10-23-2011, 10:31 AM

http://forums.dragcoverage.com/showthread.php?t=102765

Not mine just passing on the link.

Camaro_nut2001 · 10-23-2011, 04:19 PM

Quote:

Originally Posted by djracer

http://forums.dragcoverage.com/showthread.php?t=102765

Not mine just passing on the link.

Thanks for the link Man!! I found a set of 291 heads. Whats the difference in the 781 head?

Camaro_nut2001 · 10-23-2011, 04:27 PM

Quote:

Originally Posted by Camaro_nut2001

Thanks for the link Man!! I found a set of 291 heads. Whats the difference in the 781 head?

Ohh, I looked on my castin number page. They're a closed chambered head & rectagular port. I wonder what my CR would be if I went with a 290 head zero decked assumin they weren't out to far.

Camaro_nut2001 · 10-23-2011, 04:37 PM

Nevermind on the above post, I just registered with that site & gonna contact that feller on the 781's. Thanks for your advise & imput djracer.

Camaro_nut2001 · 10-23-2011, 04:57 PM

I just talked to the feller on the phone & I got my heads for my motor. DJRACER, You are the Man!!

C20-67_N_MO · 10-25-2011, 05:05 PM

I'm running a Borla muffler on my '95 shortbed Chevy and love the deep tone of this system. So if you go this route you will really enjoy it.

BigDan3131 · 10-26-2011, 03:57 AM

This is the reason I decided to go with a Borla exhaust:http://revrods.com/Projects/57_Chevy/Default.aspx

bigboybodry · 10-26-2011, 08:52 AM

I ran 4" flowmasters

Camaro_nut2001 · 10-26-2011, 09:27 AM

Quote:

Originally Posted by bigboybodry

I ran 4" flowmasters

WOW!!! My muffler guy won't do 4", lol. He don't like doin 3" but he will for some folks. Is that the 40 or 44 series? Looks great!

Camaro_nut2001 · 10-26-2011, 09:31 AM

Quote:

Originally Posted by C20-67_N_MO

I'm running a Borla muffler on my '95 shortbed Chevy and love the deep tone of this system. So if you go this route you will really enjoy it.

I'm sure gonna go with Borla's but I've gotta wait till we get back from vacation. I talked to my muffler buddy & for 3" from the headers to the rearend with turn downs at an angle is $150.00 & me bring my muffler's.

bigboybodry · 10-26-2011, 09:38 AM

40 series I believe

Camaro_nut2001 · 10-26-2011, 09:45 AM

Quote:

Originally Posted by BigDan3131

This is the reason I decided to go with a Borla exhaust:http://revrods.com/Projects/57_Chevy/Default.aspx

Thanks for the Bad A** link. I was thinkin about goin with the Borla Sportsman round case. I'm also lookin at the Dynomax Race Bullet's. They're about a hundred bucks cheaper & i've heard they flow pretty good. I'm also gonna have an H pipe put in. My muffler buddy won't do the X pipe, say's he did one on a mustang one time & won't never do a notherin, lol.

vin63 · 10-26-2011, 10:44 AM

Here's my 3" exhaust on my '63 chassis with the Borla XL Series mufflers. I went to the outside of the frame since my gas tank is located between the frame behind the reared housing...also, I wanted it to exit in front of the rear tires. But, it can be done inside of the frame rails. This allowed me to keep the entire exhaust above the bottom of the frame since my truck will end up pretty low. I wouldn't worry about an H-pipe, if that ends up being an obstacle, especially since on a 3" diameter system will put a tube pretty low for the cross pipe.

...barely visible...

**bigsnookmaster** · 10-26-2011, 04:08 PM

I run 3" mandrel bent with an x-pipe and Dynomax Super Turbos. I like it, but it's pretty quiet. I used to run Dynomax Race Magnums, but they were louder, but make good power! .02

Camaro_nut2001 · 10-27-2011, 04:20 PM

Quote:

Originally Posted by vin63

Here's my 3" exhaust on my '63 chassis with the Borla XL Series mufflers. I went to the outside of the frame since my gas tank is located between the frame behind the reared housing...also, I wanted it to exit in front of the rear tires. But, it can be done inside of the frame rails. This allowed me to keep the entire exhaust above the bottom of the frame since my truck will end up pretty low. I wouldn't worry about an H-pipe, if that ends up being an obstacle, especially since on a 3" diameter system will put a tube pretty low for the cross pipe.

...barely visible...

Thanks feller, the pictures are great & you're doin an awesome job!! I think I will take your advise & not do an H pipe. Just run 3" pipe.

Camaro_nut2001 · 10-27-2011, 04:24 PM

Quote:

Originally Posted by bigsnookmaster

I run 3" mandrel bent with an x-pipe and Dynomax Super Turbos. I like it, but it's pretty quiet. I used to run Dynomax Race Magnums, but they were louder, but make good power! .02

Thanks for the info on the Dynomax mufflers. Anybody else runnin em? I'm just wonderin if the Borla's are $100.00 worth better than the Dynomax. I would go with their race muffler if I decide to go with them but I sure like the reviews i've read on the Borla's.

fastwillie 696969 · 10-27-2011, 06:47 PM

borla is a stainless steel muffler ?

fryco · 10-27-2011, 08:41 PM

I have a set of Flowmaster Hushpowers (3 1/2") their pretty loud for the street, I don't drive my truck a whole lot, so I don't really mind. I don't run to far past dark with it, my neighbors would get sick of me quick otherwise. ET wise couldn't tell you... Pretty pricey units is their draw backs... But, they do have a awesome low sound.

10-22-2011, 02:35 PM	#1
Camaro_nut2001 Chevy Lover Till The End. Join Date: Dec 2009 Location: Mascot TN. Posts: 795	Mufflers Hey fellers, I'm doin a pro-street build on my '69 & need ya'lls opinion on what mufflers to run. Right now I have dual 2" pipe off my headers into Flowmaster 40 series with tail pipes dumpin right behind the rear wheels at kinda an angle down. I'm runnin a .030 over 454, .525 lift cam Lunati 60201LK, old smog oval port heads I want to change, performer RPM with a 3310 vac. secondary and Flowtech headers from Summit. I've read that Flowmasters restrict alot & Dynomax or Borla is a pretty good flowin muffler. I'm wantin to run 3" pipe back to mufflers then a short pipe over the rearend turned down. I'm gonna run a full pos unit & keep my 3.73 gear. My truck will see the drag strip ever once in a while. If I find a set of 781 heads I plan on goin up a couple sizes on my cam, like the Lunati 60203LK & runnin a Hughes 2500 converter in my TH400. What do ya'll think? __________________ 1969 Chevy SWB Big Block - Under the knife as of 12/26/2011 1989 Chevy Silverado, 4X4 - Daily Driver 1996 Chevy Suburban K1500 - 4-Wheeler, Campin Truck 1968 Chevrolet Impala Sport Coupe - 327/350hp, TH400, all original. Members I've met: BamaBaxter, My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=500359

10-22-2011, 04:35 PM	#2
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Mufflers Bigger heads and exhaust should help. I took 3 inch flowmasters loose from my truck at the track one night and ran open hedders and it picked up a tenth in the eighth mile. I ran dynomax bullets after that! I am gonna run cut outs and 3 inch exhaust on my son's truck. It has a mild 454 and 781's. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-22-2011, 08:28 PM	#3
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Mufflers There are 2 mufflers I like. The first is a hooker aerochamber and the second is the warlocks. The aerochamber is quiet yet flow great. Only problem is weight. The warlocks are like a flowmaster with the chamber design however, you can pull a plug out of them and they are a straight through design at that point. Basically open headers. I was running a 3" x-pipe with the warlocks and electric cutouts on them when I first got the truck going. Sounded awesome. I decided to shave some weight so I put dual cut outs right off the header, knecked down to 2.5" and hung some turbo mufflers right in front of the rear tires. Light, quiet but can be wide open in seconds. Posted via Mobile Device __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

10-22-2011, 09:00 PM	#4
nxtruck Registered User Join Date: Jun 2006 Location: Jackson, Mo. Posts: 607	Re: Mufflers I'll throw my .02 in. I'm currently running Dynomax Race magnums. They're similar to bullets, only bigger in diameter and quieter. They're a straight-thru type muffler. I picked up 1.5 tenths in the 1/8 just by going from 3 1/2 Flowmasters to these mufflers. My only complaint is how loud the inside of my cab is, but that's not the mufflers' fault. I have them mounted right underneath the cab and after a long cruise, my ears are ringin' pretty good. I plan on moving them back underneath the bed and this should quiet things down inside the cab. Your plan for running 3" past the axle sounds like a good one, especially if you're going to drive it a lot. __________________ Chris 1966 Chevy C10 LWB, 434 sbc, TH350, 12-bolt, factory suspension, pump gas 7.02 @ 95.8, 1.45 60' 1965 Chevy C10 LWB, 355 sbc, TH350, daily driver

10-22-2011, 11:30 PM	#5
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: Mufflers I run Borla (what was then the Shootout mufflers) what are now the XR1 mufflers on my Super Gas car and did many passes with and without the mufflers over nearly 20 seasons for comparison, and there was no performance difference without them. From my experience, they have the best sound attenuation with the least amout of flow restriction. I run their XL series mufflers on my C-10 and other street hot rod projects. __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

10-23-2011, 10:31 AM	#8
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,892	Re: Mufflers http://forums.dragcoverage.com/showthread.php?t=102765 Not mine just passing on the link. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-23-2011, 04:37 PM	#11
Camaro_nut2001 Chevy Lover Till The End. Join Date: Dec 2009 Location: Mascot TN. Posts: 795	Re: Mufflers Nevermind on the above post, I just registered with that site & gonna contact that feller on the 781's. Thanks for your advise & imput djracer. __________________ 1969 Chevy SWB Big Block - Under the knife as of 12/26/2011 1989 Chevy Silverado, 4X4 - Daily Driver 1996 Chevy Suburban K1500 - 4-Wheeler, Campin Truck 1968 Chevrolet Impala Sport Coupe - 327/350hp, TH400, all original. Members I've met: BamaBaxter, My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=500359

10-23-2011, 04:57 PM	#12
Camaro_nut2001 Chevy Lover Till The End. Join Date: Dec 2009 Location: Mascot TN. Posts: 795	Re: Mufflers I just talked to the feller on the phone & I got my heads for my motor. DJRACER, You are the Man!! __________________ 1969 Chevy SWB Big Block - Under the knife as of 12/26/2011 1989 Chevy Silverado, 4X4 - Daily Driver 1996 Chevy Suburban K1500 - 4-Wheeler, Campin Truck 1968 Chevrolet Impala Sport Coupe - 327/350hp, TH400, all original. Members I've met: BamaBaxter, My Build: http://67-72chevytrucks.com/vboard/s...d.php?t=500359

10-25-2011, 05:05 PM	#13
C20-67_N_MO Champagne Taste on Beer Budget Join Date: Dec 2008 Location: High Ridge, Missouri Posts: 2,190	Re: Mufflers I'm running a Borla muffler on my '95 shortbed Chevy and love the deep tone of this system. So if you go this route you will really enjoy it. __________________ Coming Soon: Project 1970 Country Truck

10-26-2011, 03:57 AM	#14
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: Mufflers This is the reason I decided to go with a Borla exhaust:http://revrods.com/Projects/57_Chevy/Default.aspx

10-26-2011, 08:52 AM	#15
bigboybodry Registered User Join Date: Jul 2009 Location: Florence,Mississippi Posts: 301	Re: Mufflers I ran 4" flowmasters Attached Images __________________ first track pass with the new motor on motor http://youtu.be/YgrJaEF_TaQ

10-26-2011, 09:38 AM	#18
bigboybodry Registered User Join Date: Jul 2009 Location: Florence,Mississippi Posts: 301	Re: Mufflers 40 series I believe __________________ first track pass with the new motor on motor http://youtu.be/YgrJaEF_TaQ

10-26-2011, 10:44 AM	#20
vin63 It's Better With Nitro Join Date: Apr 2008 Location: Chino Hills, CA Posts: 2,262	Re: Mufflers Here's my 3" exhaust on my '63 chassis with the Borla XL Series mufflers. I went to the outside of the frame since my gas tank is located between the frame behind the reared housing...also, I wanted it to exit in front of the rear tires. But, it can be done inside of the frame rails. This allowed me to keep the entire exhaust above the bottom of the frame since my truck will end up pretty low. I wouldn't worry about an H-pipe, if that ends up being an obstacle, especially since on a 3" diameter system will put a tube pretty low for the cross pipe. ...barely visible... __________________ 1963 C-10: Deluxe-optioned cab, shortbed, fleetside Pontiac 462 ci, Kauffman D-Port alum. heads 4L80E, narrowed sheetmetal Ford 9-inch Tubular front and rear suspension Custom 6-piston front disc and 4-piston rear disc brakes

10-26-2011, 04:08 PM	#21
bigsnookmaster Senior Member Join Date: Jan 2008 Location: St.Petersburg,Fl Posts: 1,270	Re: Mufflers I run 3" mandrel bent with an x-pipe and Dynomax Super Turbos. I like it, but it's pretty quiet. I used to run Dynomax Race Magnums, but they were louder, but make good power! .02 __________________ greg http://community.webshots.com/user/68406Stepside

10-27-2011, 06:47 PM	#24
fastwillie 696969 ~Rest In Peace~ Join Date: May 2005 Location: CALIFORNIA NOR CAL Posts: 9,707	Re: Mufflers borla is a stainless steel muffler ? __________________ is it fast ? it has a lighting bolt donut? B___H please, I can remove 90% of your so called "beauty" with a kleenex



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10-27-2011, 08:41 PM	#25
fryco Registered User Join Date: Jun 2009 Location: somewhere,wi Posts: 170	Re: Mufflers I have a set of Flowmaster Hushpowers (3 1/2") their pretty loud for the street, I don't drive my truck a whole lot, so I don't really mind. I don't run to far past dark with it, my neighbors would get sick of me quick otherwise. ET wise couldn't tell you... Pretty pricey units is their draw backs... But, they do have a awesome low sound.

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