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

VDOG · 09-30-2002, 06:24 PM

Hello board, its been a while since I was here last.
Anyway, does anyone know what dual offset I should use when I get my Flowmufflers? Im buying them after market, and not at a muffler shop, cost to much. And the guys at the counter are not the brightest either. Thanks

VDOG · 09-30-2002, 07:02 PM

Ok, did I ask a stupid question?

bigjimzlll · 09-30-2002, 07:11 PM

no..im curious about it too

cableguy0 · 09-30-2002, 07:14 PM

what ur asking depends on where ur running the exhaust and where its gonna exit. do some measurin and pick the closest ones

VDOG · 09-30-2002, 07:24 PM

Ok I understand. Well my plan is to run it out under the rear bumper, considering I have a longbed.

VDOG · 09-30-2002, 07:29 PM

This is the reply I got from Brothers Truck Parts when I asked about mufflers.

"You just have to get under your truck and see what will fit properly. It changes due to headers or stock manifolds and if you are running the exhaust inside or outside the frame. "

DOH!!! I forgot that I was running headers. DOH!!!

nate68 · 09-30-2002, 08:18 PM

my mufflers (not flows but about the same size, maybe alittle smaller. they're terminators, i dont know the dimensons) are under the bed and they are offset in, center out (i think, i have no middle bed section and look at them every day) and the pipes exit behind the tires.

Ackattack · 09-30-2002, 09:02 PM

I have 2 chamber, center/center, but mine comes out in front of the rear tire, so not exactly the same set up.

dion · 09-30-2002, 09:24 PM

I have a Long Bed and mine are just inside the frame from the Headers back, the balance pipe is about a foot back from the Header Collectors and the Flowmasters are right around the Driveshaft and the pipes exit behind the wheels, looks and sound great, 40's with 2.5 pipes.

XXL · 09-30-2002, 09:30 PM

Mine is outboard of the frame under the driver's floorboard (really! and on purpose

). It is offset in and center out.

Kenneth

VDOG · 10-07-2002, 07:13 PM

Most of your mufflers are just behind the rear wheels.
I want mine to exit on each side of the license plate.

crazy longhorn · 10-07-2002, 07:29 PM

My thoughts are , talk with the shop bending the pipe......it will depend on placement,& leaf or coil on the springs. Hell, I can put whatever I want on the longhorn,cause it has leaf springs! the coil sprung trucks dont have the room to play with. another thought,the 2 chamber flows are pretty f***ing loud......I ran a set, &! pulled them after about 2000 mi, & installed a set of Dynomax superturbos. Good luck.....Crazy longhorn

bigjimzlll · 10-07-2002, 07:34 PM

Hey Crazy Longhorn..do you still have the old flowmasters? Im looking for a used set

crazy longhorn · 10-07-2002, 07:54 PM

Yes, I still do have the flows......but I promised them to my oldest kid......sorry! i will have anther 'hotrod" to set up, the 89 ranger is runnin a tired 305 CHEV! i think we will do a 331 for that liteweight truck? Crazy AL

09-30-2002, 06:24 PM	#1
VDOG Grand PooBaa Member Join Date: Jan 2001 Location: LA, CA Posts: 5,302	Flowmaster Mufflers Hello board, its been a while since I was here last. Anyway, does anyone know what dual offset I should use when I get my Flowmufflers? Im buying them after market, and not at a muffler shop, cost to much. And the guys at the counter are not the brightest either. Thanks

09-30-2002, 07:11 PM	#3
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	no..im curious about it too __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

09-30-2002, 07:14 PM	#4
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,948	what ur asking depends on where ur running the exhaust and where its gonna exit. do some measurin and pick the closest ones __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.

09-30-2002, 08:18 PM	#7
nate68 Registered User Join Date: Jan 2000 Location: ca Posts: 1,110	my mufflers (not flows but about the same size, maybe alittle smaller. they're terminators, i dont know the dimensons) are under the bed and they are offset in, center out (i think, i have no middle bed section and look at them every day) and the pipes exit behind the tires. __________________ 68 short step, 406/700r4, 9" w/discs.

09-30-2002, 09:02 PM	#8
Ackattack Senior Member Join Date: Aug 2002 Location: Valley Center KS Posts: 3,524	I have 2 chamber, center/center, but mine comes out in front of the rear tire, so not exactly the same set up. __________________ Project Bruiser: 68 Pro-Touring C-10 5.3L / 4L60E Project Ironhide: 97 GMC Crew Cab 4x4 Cummins SOLD: '69 GMC 1/2T SWB TBI'd: Project No Buck Assembly Manual Index Sign up Thread!!! Factory Service Manual Index

09-30-2002, 07:02 PM	#2
VDOG Grand PooBaa Member Join Date: Jan 2001 Location: LA, CA Posts: 5,302	Ok, did I ask a stupid question?

09-30-2002, 07:24 PM	#5
VDOG Grand PooBaa Member Join Date: Jan 2001 Location: LA, CA Posts: 5,302	Ok I understand. Well my plan is to run it out under the rear bumper, considering I have a longbed.

09-30-2002, 07:29 PM	#6
VDOG Grand PooBaa Member Join Date: Jan 2001 Location: LA, CA Posts: 5,302	This is the reply I got from Brothers Truck Parts when I asked about mufflers. "You just have to get under your truck and see what will fit properly. It changes due to headers or stock manifolds and if you are running the exhaust inside or outside the frame. " DOH!!! I forgot that I was running headers. DOH!!!

09-30-2002, 09:24 PM	#9
dion 72 Cheyenne Join Date: Oct 2001 Location: San Diego Posts: 2,086	I have a Long Bed and mine are just inside the frame from the Headers back, the balance pipe is about a foot back from the Header Collectors and the Flowmasters are right around the Driveshaft and the pipes exit behind the wheels, looks and sound great, 40's with 2.5 pipes. __________________ Burnout Idle 1972Cheyenne 1966/67Stouts

09-30-2002, 09:30 PM	#10
XXL Señor Member Join Date: May 2002 Location: Edge of the world Posts: 5,367	Mine is outboard of the frame under the driver's floorboard (really! and on purpose ). It is offset in and center out. Kenneth __________________ Craigslist \| ebay \| Engrishtees \| www.myattitudesucks.com \| Follow me on Twitter

10-07-2002, 07:13 PM	#11
VDOG Grand PooBaa Member Join Date: Jan 2001 Location: LA, CA Posts: 5,302	Most of your mufflers are just behind the rear wheels. I want mine to exit on each side of the license plate.

10-07-2002, 07:29 PM	#12
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	My thoughts are , talk with the shop bending the pipe......it will depend on placement,& leaf or coil on the springs. Hell, I can put whatever I want on the longhorn,cause it has leaf springs! the coil sprung trucks dont have the room to play with. another thought,the 2 chamber flows are pretty f***ing loud......I ran a set, &! pulled them after about 2000 mi, & installed a set of Dynomax superturbos. Good luck.....Crazy longhorn

10-07-2002, 07:34 PM	#13
bigjimzlll Senior Member Join Date: Dec 2001 Location: Redding,CA...USA Posts: 4,736	Hey Crazy Longhorn..do you still have the old flowmasters? Im looking for a used set __________________ It's called "drag racing" if they called it "tic..tic..WHAM!..BANG! F*&K!!!", they'd have to keep the magazines under the counter with the other men's publications click the clicky to join the site.... http://67-72chevytrucks.com/vboard/payments.php 67 lwb..first hotrod in 25 years..540 best ET is 9.45 @ 141.44 Anderson,CA

10-07-2002, 07:54 PM	#14
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Yes, I still do have the flows......but I promised them to my oldest kid......sorry! i will have anther 'hotrod" to set up, the 89 ranger is runnin a tired 305 CHEV! i think we will do a 331 for that liteweight truck? Crazy AL



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