Exhaust question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

mrmaxrebo · 05-18-2005, 04:38 PM

I have recently bought a '72 k5 blazer for a dollar.

http://www.cardomain.com/memberpage/825314

She has a rebuilt stock 350. I am planning to get new exhaust from the exhaust manifold on back. What do you recommend for exhaust pipe size. i am debating whether to go true dual exhaust or single. I am planning to get flowmasters or have no muffler at all. i want something with a low tone, and relatively loud, without losing power. what do you guys recommend

LUV2XCLR8 · 05-18-2005, 04:52 PM

If you go to a shop that's a FLOWMASTER DEALER, they have a
spec sheet in their catalog that gives you a proper pipe size for
guestamated hp ratings in single or dual format, hope it helps

I refuse to run flows, been there done that, my exhaust goes
on in less than two week, 2.5" aluminized w/ SS magnaflows!

2 THE BOARD FROM WEST 10-UH-C

donkey69 · 05-18-2005, 05:40 PM

Nice looking Blazer-and welcome from MN!

2 1/2" true dual is my vote....

bouncytruck · 05-18-2005, 06:27 PM

Welcome from up Bothell. That is a very fine looking rig for $1! Definately plan on joining the local Classic GM Truck Club of Washington. You can find info on http://classicgmtrucks.net/

You didn't happen to be parked on the side of Highway 302 a couple weeks ago? I was leaving the in-laws out by Victor, and passed a blue K5.

MikeS · 05-18-2005, 06:40 PM

$1??!!! Why can't I find those kind of deals?

Welcome to the world of of 1st Gen blazers. Looks like you're making gret progress.

With a stock engine like yours, 2 1/4" duals would do the trick. Don't forget the cross over pipe. And DON'T buy the Hooker kit. It doesn't fit. Been there, done that!

skid · 05-18-2005, 10:16 PM

I'll go against the grain here and recommend a large single pipe. If done and sized correctly, it is dyno proven to make more power. Plus you can use your stock hangars and routing. Check the ram horn thread and check the links to www.castheads.com

Check the 2 into 1 exhaust systems to see the dyno charts between dual exhaust and a 2-1.

mrmaxrebo · 05-19-2005, 12:49 AM

thanks a bunch! I am glad to say that wasnt me sitting on the highway. should i get flows or go straight is my question

LUV2XCLR8 · 05-19-2005, 02:47 PM

Even Though I Dislike Flows, Used To Install Em, You Don't Want Straights, Jmho

bouncytruck · 05-19-2005, 03:45 PM

You'll get pulled over every other day if you run without mufflers.

So, how did you buy a Blazer for a $1?

LUV2XCLR8 · 05-19-2005, 04:34 PM

Quote:

Originally Posted by bouncytruck

So, how did you buy a Blazer for a $1?

My guess is a relative, in TN. if you give your vehicle away you must charge at least $1

mrmaxrebo · 05-19-2005, 05:57 PM

Family friend going threw a divorce. They were planning to give it away to Goodwill or something like that. I was looking for a project vehicle, so they said if i wanted it I could have for a $1. Funny we drove it 3 block and someone already offerd to buy it, what fun would that be though. LUV2XCLR8 why do you hate flowmasters?

HatGuy · 05-19-2005, 07:05 PM

Skid, For the 2 into 1 set up.
Did you buy the kit or indivual peices?
What part# muffler did you use?
How's it sound? (not to loud I hope)

*bisquik65* · 05-19-2005, 07:43 PM

Quote:

Originally Posted by bouncytruck

You'll get pulled over every other day if you run without mufflers.

So, how did you buy a Blazer for a $1?

Unless you live in mitchell county n.c. No muffler laws at all,Everyone runs straight pipes..And it echoes off the mountains like thunder...The Chevy's sound good ,but these F*rd guys and D*dge guys here think there's sound good too? The F*rds sound terrible..

No inspections,no radar!!!hehehe You are lucky to see a n.c. trooper once every 3-4 months...They only come here for accident reports..

mrmaxrebo · 05-20-2005, 01:29 AM

Quote:

Unless you live in mitchell county n.c. No muffler laws at all,Everyone runs straight pipes..And it echoes off the mountains like thunder...The Chevy's sound good ,but these F*rd guys and D*dge guys here think there's sound good too? The F*rds sound terrible.. No inspections,no radar!!!hehehe You are lucky to see a n.c. trooper once every 3-4 months...They only come here for accident reports..

Wouldnt that be nice in Washington in the past 2 months, there isnt a day I dont see a cop. My friend has a D*dge 1500 with no mufflers and its not that loud at all, but it sounds really really nice

*Medicanman71* · 05-21-2005, 09:25 PM

WHATTTT WHAT WAHT? Alright, i got my FLOWMASTERS put on in the MECca Of flowmaster (thats right - take a look at the sticker [hint]). I have my new(1.5months) turbu 40 serries put on (2) w and H pipe.... headers w/ a 3" collecter and 2.5" pipes all the way back. Granted thur not stainless (ok you got flowmaster thur) - they sound f!cking great.... i'm way happy with them, and i got them put on and the old ones swapped out at johnny franklins for $150 or so... out the drive. Well i'm happy with them for what they are and the value...

BUt really.... i want some cut outs....electric ones, lets talk about who has those.. and see pics....

LUV2XCLR8 · 05-21-2005, 10:02 PM

Quote:

Originally Posted by mrmaxrebo

LUV2XCLR8 why do you hate flowmasters?

At certain rpm levels they create interior worble / hum, don't get me
wrong they sound killer, I have had them on all of my trucks, since I
got to work part time on the side at my buddies muffler shop I have
grown to luv MAGNAFLOWS, they are much nicer, quieter at idles, it
is wide open under full throttle like a flow, NO interior worble / hum

*This is JMHO, I in no way endorse either product, nor do I get paid
to promote one over the other, this is just from 2.5 years of installs

*Medicanman71* · 05-22-2005, 05:12 PM

I was about to get those , i wanted something with straight flow through design, they told me to get the turbo 40 serries 2 chambers, and so did my wallet. I'ma get me some nice magnaflows when i have a 350 that deserves them. wait, forget a 350

mrmaxrebo · 05-22-2005, 09:47 PM

I completely understand why luv2xclr8 dislikes flows for that. my only gripe about magnaflows is they are too damn expensive, at least for me that is. Right now im running straight pipe, dumps right after the transfer case. ITS WAY TOO LOUD, but I am planning to get that fixed.

HatGuy · 05-23-2005, 03:08 AM

What muffler do you guys think is the least loud
that still gives good performance?

LUV2XCLR8 · 05-23-2005, 01:45 PM

Quote:

Originally Posted by mrmaxrebo

I completely understand why luv2xclr8 dislikes flows for that. my only gripe about magnaflows is they are too damn expensive, at least for me that is.

Same price as FLOWS here in West. TN.

mrmaxrebo · 05-23-2005, 04:28 PM

Unless I am mistaken, magnaflows runs in the $300 dollar range. while here flows run around $70ish.

Quote:

Originally Posted by HatBoy

What muffler do you guys think is the least loud
that still gives good performance?

I have heard good things about flowmaster's hushpower.

LUV2XCLR8 · 05-23-2005, 04:40 PM

Quote:

Originally Posted by mrmaxrebo

Unless I am mistaken, magnaflows runs in the $300 dollar range. while here flows run around $70ish.

OMG, NO WONDER YOU ARE GOING WITH FLOWS, HERE THEY ARE $79.99-
$99.95 DEPENDING ON INLET / OULET SIZES, I'M PUTTING THE SS ONES
ON "GQ", NOW THEY ARE ALOT HIGHER, $149.99 EACH FOR STAINLESS.

mrmaxrebo · 05-23-2005, 04:52 PM

I went on the magnaflow site, I guess they do run around $150 just for the muffler, but when I called the local exhaust shop they quoted me $500. If I could afford it, I would. Looks like flows or straight pipe yet again. My s-10 cost me $220 for a catback install and custom pipe.

LUV2XCLR8 · 05-23-2005, 05:11 PM

Quote:

Originally Posted by mrmaxrebo

I went on the magnaflow site, I guess they do run around $150 just for the muffler,
but when I called the local exhaust shop they quoted me $500.

Getting mine done Thursday for price you were quoted above, 2 Stainless Steel
Magnaflows ($300), 2 front 2.5" Aluminized exhaust pipes (Header to Mufflers),
and 2 rear 2.5" Aluminized tail pipes (Mufflers to Tips) and 2 exhaust tips, The
aluminized pipe runs my buddy cost at close to $35 a stick, and we are going
to be using 4 sticks, most shops, who quote lower prices, use steel pipe, there
is a huge differance in quality, my buddy is clearing $100 profit on my job so a
$500 quote may not be out of line depending on the products they use, oh yea
I also forgot 6-8 Heavy duty "J" hangers, not the cheapy weld in strap kind.

Hoods69BadBowTie · 05-23-2005, 05:23 PM

I love the straight pipes on my '79 and have not got pulled over yet and truck we I have opened them up on occasion. Anyways I like those FlowMasters but I also like the MagnaFlows but I quoted alot more money $$ for them then the Flows though. I like dual exhaust but that is just my personal preference.
Sweet looking Blazer for a dollar too!!
-Later

05-18-2005, 04:38 PM	#1
mrmaxrebo Registered User Join Date: May 2005 Location: Tacoma, WA Posts: 10	Exhaust question I have recently bought a '72 k5 blazer for a dollar. http://www.cardomain.com/memberpage/825314 She has a rebuilt stock 350. I am planning to get new exhaust from the exhaust manifold on back. What do you recommend for exhaust pipe size. i am debating whether to go true dual exhaust or single. I am planning to get flowmasters or have no muffler at all. i want something with a low tone, and relatively loud, without losing power. what do you guys recommend Last edited by mrmaxrebo; 05-18-2005 at 04:43 PM.

05-18-2005, 04:52 PM	#2
LUV2XCLR8 The LuvShack Garage Join Date: Jan 2004 Location: Maple Grove, TN (West Side) Posts: 30,468	If you go to a shop that's a FLOWMASTER DEALER, they have a spec sheet in their catalog that gives you a proper pipe size for guestamated hp ratings in single or dual format, hope it helps I refuse to run flows, been there done that, my exhaust goes on in less than two week, 2.5" aluminized w/ SS magnaflows! 2 THE BOARD FROM WEST 10-UH-C __________________ Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T Last edited by LUV2XCLR8; 05-18-2005 at 04:54 PM.

05-18-2005, 05:40 PM	#3
donkey69 JB-80 &quot;Twice as Good&quot; Join Date: Jun 2004 Location: Central, MN Posts: 354	Nice looking Blazer-and welcome from MN! 2 1/2" true dual is my vote.... __________________ HEY NOW!

05-18-2005, 06:27 PM	#4
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,038	Welcome from up Bothell. That is a very fine looking rig for $1! Definately plan on joining the local Classic GM Truck Club of Washington. You can find info on http://classicgmtrucks.net/ You didn't happen to be parked on the side of Highway 302 a couple weeks ago? I was leaving the in-laws out by Victor, and passed a blue K5. __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

05-18-2005, 10:16 PM	#6
skid Registered User Join Date: Dec 2003 Location: Left Coast Posts: 254	I'll go against the grain here and recommend a large single pipe. If done and sized correctly, it is dyno proven to make more power. Plus you can use your stock hangars and routing. Check the ram horn thread and check the links to www.castheads.com Check the 2 into 1 exhaust systems to see the dyno charts between dual exhaust and a 2-1. __________________ Toys: 72 K5 Blazer 74 Vette Last edited by skid; 05-18-2005 at 10:22 PM.

05-18-2005, 06:40 PM	#5
MikeS Active Member Join Date: Jun 2000 Location: Pottstown, PA Posts: 197	$1??!!! Why can't I find those kind of deals? Welcome to the world of of 1st Gen blazers. Looks like you're making gret progress. With a stock engine like yours, 2 1/4" duals would do the trick. Don't forget the cross over pipe. And DON'T buy the Hooker kit. It doesn't fit. Been there, done that!

05-19-2005, 12:49 AM	#7
mrmaxrebo Registered User Join Date: May 2005 Location: Tacoma, WA Posts: 10	thanks a bunch! I am glad to say that wasnt me sitting on the highway. should i get flows or go straight is my question

05-19-2005, 02:47 PM	#8
LUV2XCLR8 The LuvShack Garage Join Date: Jan 2004 Location: Maple Grove, TN (West Side) Posts: 30,468	Even Though I Dislike Flows, Used To Install Em, You Don't Want Straights, Jmho __________________ Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T

05-19-2005, 03:45 PM	#9
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,038	You'll get pulled over every other day if you run without mufflers. So, how did you buy a Blazer for a $1? __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

05-19-2005, 05:57 PM	#11
mrmaxrebo Registered User Join Date: May 2005 Location: Tacoma, WA Posts: 10	Family friend going threw a divorce. They were planning to give it away to Goodwill or something like that. I was looking for a project vehicle, so they said if i wanted it I could have for a $1. Funny we drove it 3 block and someone already offerd to buy it, what fun would that be though. LUV2XCLR8 why do you hate flowmasters? __________________ 1972 K/5 Blazer CST - $1 Beast 1993 4.3L S-10 Ext Cab. - 3/4th 350 Last edited by mrmaxrebo; 05-19-2005 at 06:00 PM.

05-19-2005, 07:05 PM	#12
HatGuy Registered User Join Date: Aug 2003 Location: Fort Worth Texas Posts: 275	Skid, For the 2 into 1 set up. Did you buy the kit or indivual peices? What part# muffler did you use? How's it sound? (not to loud I hope) __________________ Joe Peters the HatGuy 72' K5 Highlander My Daily Driver http://www.pbhats.com/BLAZER/index.html

05-21-2005, 09:25 PM	#15
Medicanman71 Account Suspended Join Date: May 2005 Location: Where the Wild Things Are Posts: 696	WHATTTT WHAT WAHT? Alright, i got my FLOWMASTERS put on in the MECca Of flowmaster (thats right - take a look at the sticker [hint]). I have my new(1.5months) turbu 40 serries put on (2) w and H pipe.... headers w/ a 3" collecter and 2.5" pipes all the way back. Granted thur not stainless (ok you got flowmaster thur) - they sound f!cking great.... i'm way happy with them, and i got them put on and the old ones swapped out at johnny franklins for $150 or so... out the drive. Well i'm happy with them for what they are and the value... BUt really.... i want some cut outs....electric ones, lets talk about who has those.. and see pics....

05-22-2005, 05:12 PM	#17
Medicanman71 Account Suspended Join Date: May 2005 Location: Where the Wild Things Are Posts: 696	I was about to get those , i wanted something with straight flow through design, they told me to get the turbo 40 serries 2 chambers, and so did my wallet. I'ma get me some nice magnaflows when i have a 350 that deserves them. wait, forget a 350

05-22-2005, 09:47 PM	#18
mrmaxrebo Registered User Join Date: May 2005 Location: Tacoma, WA Posts: 10	I completely understand why luv2xclr8 dislikes flows for that. my only gripe about magnaflows is they are too damn expensive, at least for me that is. Right now im running straight pipe, dumps right after the transfer case. ITS WAY TOO LOUD, but I am planning to get that fixed. __________________ 1972 K/5 Blazer CST - $1 Beast 1993 4.3L S-10 Ext Cab. - 3/4th 350

05-23-2005, 03:08 AM	#19
HatGuy Registered User Join Date: Aug 2003 Location: Fort Worth Texas Posts: 275	What muffler do you guys think is the least loud that still gives good performance? __________________ Joe Peters the HatGuy 72' K5 Highlander My Daily Driver http://www.pbhats.com/BLAZER/index.html



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05-23-2005, 04:52 PM	#23
mrmaxrebo Registered User Join Date: May 2005 Location: Tacoma, WA Posts: 10	I went on the magnaflow site, I guess they do run around $150 just for the muffler, but when I called the local exhaust shop they quoted me $500. If I could afford it, I would. Looks like flows or straight pipe yet again. My s-10 cost me $220 for a catback install and custom pipe. __________________ 1972 K/5 Blazer CST - $1 Beast 1993 4.3L S-10 Ext Cab. - 3/4th 350

05-23-2005, 05:23 PM	#25
Hoods69BadBowTie Chevys Kick A$$ Join Date: Jan 2005 Location: Zootown, MT Posts: 12,699	I love the straight pipes on my '79 and have not got pulled over yet and truck we I have opened them up on occasion. Anyways I like those FlowMasters but I also like the MagnaFlows but I quoted alot more money $$ for them then the Flows though. I like dual exhaust but that is just my personal preference. Sweet looking Blazer for a dollar too!! -Later __________________ HOODS is what I answer too -'79, '77, '88 Pickup Sold, '85 Camaro, '83 T/A, '81,'83,'90 K5 Blazer All Sold -'79 3/4 ton "Big Yellow Bananna" Lifted 4spd. 39.5 TSL Swampers, The money Pit -'86 K5 Blazer Silverado 6.2 4" lift 35"s -'95 Ext. Cab Shorty 4" Tuff Country rolling 35" M/T's -'83 Monte Carlo T-Tops. 126,500 Original Miles -LATER I would rather push a Chevy then drive a ford!! Last edited by Hoods69BadBowTie; 05-23-2005 at 05:24 PM.

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