headers - flowtech or Dynomax - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Jimbotronics · 09-22-2004, 07:47 PM

Anyone tell me anything about these headers. Price is about the same just curious which is the better header?

toddtheodd · 09-22-2004, 07:50 PM

hooker

Bill72BB · 09-22-2004, 07:55 PM

I have Dynomax no problems .

CHEVYE · 09-22-2004, 08:12 PM

i thought flowtech and dynomax were the same, through holley or something like that.

Jimbotronics · 09-22-2004, 08:12 PM

lol - hookers maybe down the road Todd, don't have the exta duckets for them at the moment.

Thanks bill! Are you running dynomax mufflers also? If so, do they sound pretty good?

Orange '71 GMC · 09-22-2004, 08:20 PM

I have been running a set of Dynomax JetHot coated headers for a while now (350), and I love them. They are still very nice and silver just like when I got them.

My dad also has them on his truck (454) with no problems, except on his truck the header runs so close to the starter that it heats them up and causes problems.

I am running Mellow-Tone single chamber drag mufflers - and I am still plenty quiet enough to be on the street without any problems.

Bill72BB · 09-22-2004, 09:38 PM

Quote:

Originally Posted by Jimbotronics

lol - hookers maybe down the road Todd, don't have the exta duckets for them at the moment.

Thanks bill! Are you running dynomax mufflers also? If so, do they sound pretty good?

After having Flowmaster 40's on my other truck , I have stock mufflers on BB .Guess I'm getting old .

ddsmith · 09-22-2004, 09:52 PM

"I have stock mufflers on BB .Guess I'm getting old ." A little older Bill and you'll think flowmasters sound normal and everyone else will think they're loud. Unless you turn up the hearing aid.

Jimbotronics · 09-22-2004, 10:42 PM

I think I'll give the dynomax a try - I can always sell 'em and go with something different later.

purple gas · 10-10-2004, 10:30 PM

I'm useing flowtechs,, they seem to fit not bad, and you can still get at most things,, cept I think I'll sell it when it's time for new plugs.

72 CustomCamper · 10-10-2004, 10:53 PM

The Flowtech headers are the old Blackjack headers...

Chuck

Tx Firefighter · 10-10-2004, 10:56 PM

If you decide to go Dynomax headers, order the Summit brand headers. They are reboxed Dynomax units. If you look close, you can make out the Dynomax part number stamped into them by the collector.

I've run the Summit Jet-Hot coated headers personally. It was a pleasant surprise when they cost 180 bucks and were Dynomax brand. The non Jet-Hot ones are like 90 bucks.

**lock** · 10-11-2004, 12:28 AM

Got a p/n on the summit ones? ... are the long tube?

*1972C10* · 10-11-2004, 12:59 AM

Flowtech Thicker flanges And you can get flowtech at autozone. Friend of mine claims came with a lifetime warranty Im skeptical But at leats you can get them without paying shipping.

djracer · 10-11-2004, 01:04 AM

I have small block hedmans and I like them!

Z28Owner · 10-11-2004, 05:02 AM

Quote:

Originally Posted by purple gas

I'm useing flowtechs,, they seem to fit not bad, and you can still get at most things,, cept I think I'll sell it when it's time for new plugs.

Im running Flowtech's and only have to use a end wrench on the #6 plug, rest are a straight shot with a socket. BTW you can get them at autozone for like $80. Came with collectors and all too, if I remember correctly.

Tx Firefighter · 10-11-2004, 08:55 AM

The Summit headers are reboxed Dynomax headers.

Part number SUM-G9006 for the normal ones cost is 79.50
Part number SUM-G9006-9 for Jet Hot coated cost is 180.99

Here's a picture of the Jet-Hot coated ones on my old 72. If they look a little shabby, keep in mind he left the hood off this truck with it sitting outside in the weather for over a year one time.

Jimbotronics · 10-11-2004, 10:17 AM

Been meaning to come back and update this post. I went with Dynomax, got 'em at Discount Auto for $87 bucks and came with all the flanges to mount right up. They're just black not jet coated. I also installed new tubing and dynomax mufflers as well. Must say she sounds mighty nice! Right now I have the pipes going all the way back and turning out behind the rear wheels but may change that to turn out in front of 'em. Any pro's or cons to that?

Jimbotronics · 10-11-2004, 10:30 AM

Here's a few pics - hey no laughing at the tape on the window, it's held them windows together through three hurricanes...

RODSBYT · 10-11-2004, 06:58 PM

Sandersen headers are very well made with flanges so thick you do not need to run header gaskets! Just ultra black permatex . Never leak and no anoying header gaskets that burn out .
I bought mine thru early classic enterprises well worth the money.
The mid length design keeps ground clearance as if you were running manifolds.

cornutz · 10-11-2004, 07:21 PM

If anyone wants some flow techs, check these out, new and cheap!

Flow Tech 1.5” black headers #11500 and both chrome alternator mount brackets needed---NEW $50.00

Call Pat at 209-614-7511, nice guy needs the $$$.

Tx Firefighter · 10-11-2004, 07:25 PM

On his 71, he won't need any alternator brackets.

drenwick · 10-11-2004, 09:12 PM

I have the ceramic Dynomax and like the others, I love them - they still look great after 2 years.

Orange 71 - I had the same problem with the heat from the headers frying my starter. Tell your dad to pick up the starter heat shield from Summit - I've had no problems since I installed it.

Dan

MandarinSixSeven · 08-02-2005, 04:54 PM

Does anyone know what headers will fit on a 350 that is mounted on the I6 mounts (farther back in the engine bay) with a manual transmission? I know this is a weird request, but I have heard that the clutch linkage really gets in the way, just hoping that maybe someone here has had any luck??

LUV2XCLR8 · 08-02-2005, 05:03 PM

Quote:

Originally Posted by 1972C10

Flowtech Thicker flanges And you can get flowtech at autozone.at least you can get them without paying shipping.

This is where I got the set I had on my 67

09-22-2004, 07:55 PM	#3
Bill72BB Thats the Hillbilly way Join Date: Jul 2001 Location: Torrance,Ca Posts: 5,980	I have Dynomax no problems . __________________ BILL Torrance Calif 90504 Member DUF Club Member Old Farts Club 72 3/4ton Custom Camper BB402/400 trans Dynomax Cerama-coat headers , Hei distributor ,Edelbrock 1411 air,ps,pb,leafsprings ,98 chevy 60/40 seat,S10 shoulder belts tilt,3.54 Dana 60 rear. 16" Eagle wheels with LT265/75 16 tires,Gaylord Lid,H4 headlights with 100W relay conversion. " If I knew I was going to live this long I would have taken better care of myself " Marriage changes passion...suddenly you're in bed with a relative. A GUY'S PRAYER.... Lord, I pray for a nympho with huge boobs who owns a liquor store and likes to fish and hunt and has a Harley .Amen ,

09-22-2004, 08:12 PM	#4
CHEVYE my gas saver Join Date: Sep 2003 Location: Clarksville, TN Posts: 2,046	i thought flowtech and dynomax were the same, through holley or something like that. __________________ 85' SWB, 4.3/TH350, getting ready for paint 84`SWB, 462ci./TH400, cowl hood, 15" billet spec., flows, blazer buckets/console, flat black 71`SWB, project ebay feedback

09-22-2004, 08:12 PM	#5
Jimbotronics YA YA Join Date: Aug 2004 Location: Rockledge, Fl Posts: 1,273	lol - hookers maybe down the road Todd, don't have the exta duckets for them at the moment. Thanks bill! Are you running dynomax mufflers also? If so, do they sound pretty good? __________________ Jimbo '72 SWB - 350 (frame-off resto in progress - donations accepted) '04 Chevy Avalanche '03 Cadillac CTS (wife's ride) Restoration progress - http://67-72chevytrucks.com/vboard/s...d.php?t=335707

09-22-2004, 09:52 PM	#8
ddsmith Glowing since 1978 Join Date: Mar 2001 Location: Lusby,MD,USA Posts: 532	"I have stock mufflers on BB .Guess I'm getting old ." A little older Bill and you'll think flowmasters sound normal and everyone else will think they're loud. Unless you turn up the hearing aid. __________________ 66 Chevy C30 Stakebody Dump, PS,PB, 327cu in 71 Corvette Coupe 454 4 speed 69 Chevy C20 Custom Camper

09-22-2004, 10:42 PM	#9
Jimbotronics YA YA Join Date: Aug 2004 Location: Rockledge, Fl Posts: 1,273	I think I'll give the dynomax a try - I can always sell 'em and go with something different later. __________________ Jimbo '72 SWB - 350 (frame-off resto in progress - donations accepted) '04 Chevy Avalanche '03 Cadillac CTS (wife's ride) Restoration progress - http://67-72chevytrucks.com/vboard/s...d.php?t=335707

09-22-2004, 07:47 PM	#1
Jimbotronics YA YA Join Date: Aug 2004 Location: Rockledge, Fl Posts: 1,273	headers - flowtech or Dynomax Anyone tell me anything about these headers. Price is about the same just curious which is the better header? __________________ Jimbo '72 SWB - 350 (frame-off resto in progress - donations accepted) '04 Chevy Avalanche '03 Cadillac CTS (wife's ride) Restoration progress - http://67-72chevytrucks.com/vboard/s...d.php?t=335707

09-22-2004, 07:50 PM	#2
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	hooker

09-22-2004, 08:20 PM	#6
Orange '71 GMC Registered User Join Date: Jun 2003 Location: Northwest GA Posts: 132	I have been running a set of Dynomax JetHot coated headers for a while now (350), and I love them. They are still very nice and silver just like when I got them. My dad also has them on his truck (454) with no problems, except on his truck the header runs so close to the starter that it heats them up and causes problems. I am running Mellow-Tone single chamber drag mufflers - and I am still plenty quiet enough to be on the street without any problems. __________________ Orange '71 GMC

10-10-2004, 10:30 PM	#10
purple gas Registered User Join Date: Oct 2004 Location: saskatoon, planet earth Posts: 686	I'm useing flowtechs,, they seem to fit not bad, and you can still get at most things,, cept I think I'll sell it when it's time for new plugs.

10-10-2004, 10:53 PM	#11
72 CustomCamper huh ??? Join Date: Nov 2002 Location: Fredericksburg,Va. Posts: 3,369	The Flowtech headers are the old Blackjack headers... Chuck __________________ 90 Blazer Silverado 350w/ 700R4 and 32" Kelly's "I am a bomb technician. If you see me running try to keep up!"

10-10-2004, 10:56 PM	#12
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	If you decide to go Dynomax headers, order the Summit brand headers. They are reboxed Dynomax units. If you look close, you can make out the Dynomax part number stamped into them by the collector. I've run the Summit Jet-Hot coated headers personally. It was a pleasant surprise when they cost 180 bucks and were Dynomax brand. The non Jet-Hot ones are like 90 bucks. __________________ I'm on the Instagram- @Gearhead_Kevin

10-11-2004, 12:28 AM	#13
lock Insert funny comment. Join Date: Dec 1999 Location: Concord NC Posts: 621	Got a p/n on the summit ones? ... are the long tube? __________________ ------------ - Mark -My Build Thread... -68 C10, LT1 - Undergoing Frame off resto -86 IROC-Z T72 turbo 355, M6 -70 Camaro http://www.iroc-ss.com

10-11-2004, 12:59 AM	#14
1972C10 Account Suspended Join Date: Dec 2003 Location: Texas Posts: 2,686	Flowtech Thicker flanges And you can get flowtech at autozone. Friend of mine claims came with a lifetime warranty Im skeptical But at leats you can get them without paying shipping.

10-11-2004, 01:04 AM	#15
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	I have small block hedmans and I like them! __________________ 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!

10-11-2004, 08:55 AM	#17
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	The Summit headers are reboxed Dynomax headers. Part number SUM-G9006 for the normal ones cost is 79.50 Part number SUM-G9006-9 for Jet Hot coated cost is 180.99 Here's a picture of the Jet-Hot coated ones on my old 72. If they look a little shabby, keep in mind he left the hood off this truck with it sitting outside in the weather for over a year one time. Attached Images __________________ I'm on the Instagram- @Gearhead_Kevin



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10-11-2004, 10:17 AM	#18
Jimbotronics YA YA Join Date: Aug 2004 Location: Rockledge, Fl Posts: 1,273	Been meaning to come back and update this post. I went with Dynomax, got 'em at Discount Auto for $87 bucks and came with all the flanges to mount right up. They're just black not jet coated. I also installed new tubing and dynomax mufflers as well. Must say she sounds mighty nice! Right now I have the pipes going all the way back and turning out behind the rear wheels but may change that to turn out in front of 'em. Any pro's or cons to that? __________________ Jimbo '72 SWB - 350 (frame-off resto in progress - donations accepted) '04 Chevy Avalanche '03 Cadillac CTS (wife's ride) Restoration progress - http://67-72chevytrucks.com/vboard/s...d.php?t=335707

10-11-2004, 10:30 AM	#19
Jimbotronics YA YA Join Date: Aug 2004 Location: Rockledge, Fl Posts: 1,273	Here's a few pics - hey no laughing at the tape on the window, it's held them windows together through three hurricanes... __________________ Jimbo '72 SWB - 350 (frame-off resto in progress - donations accepted) '04 Chevy Avalanche '03 Cadillac CTS (wife's ride) Restoration progress - http://67-72chevytrucks.com/vboard/s...d.php?t=335707

10-11-2004, 06:58 PM	#20
RODSBYT Registered User Join Date: Jun 2004 Location: GRAFTON , OHIO Posts: 58	Sandersen headers are very well made with flanges so thick you do not need to run header gaskets! Just ultra black permatex . Never leak and no anoying header gaskets that burn out . I bought mine thru early classic enterprises well worth the money. The mid length design keeps ground clearance as if you were running manifolds.

10-11-2004, 07:21 PM	#21
cornutz All Praise RANDY!! Join Date: Sep 2004 Location: Central California Posts: 391	If anyone wants some flow techs, check these out, new and cheap! Flow Tech 1.5” black headers #11500 and both chrome alternator mount brackets needed---NEW $50.00 Call Pat at 209-614-7511, nice guy needs the $$$.

10-11-2004, 07:25 PM	#22
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	On his 71, he won't need any alternator brackets. __________________ I'm on the Instagram- @Gearhead_Kevin

10-11-2004, 09:12 PM	#23
drenwick Registered User Join Date: Jan 2004 Location: San Diego Posts: 25	I have the ceramic Dynomax and like the others, I love them - they still look great after 2 years. Orange 71 - I had the same problem with the heat from the headers frying my starter. Tell your dad to pick up the starter heat shield from Summit - I've had no problems since I installed it. Dan __________________ '68 Chevy LWB Fleetside 3/4T, 454/T400, PS, PB, PL, HEI, Dynomax Ceramic/Flowmasters, Oak/Stainless Steel bed, 90% Rest. '97 Lexus LX450 (FZJ80 Land Cruiser in disguise) Factory F&R Lockers '97 Camry DD w/Cleveland Browns sticker

08-02-2005, 04:54 PM	#24
MandarinSixSeven Seasonal Poster Join Date: Apr 2002 Location: Kelowna BC Canada Posts: 896	Does anyone know what headers will fit on a 350 that is mounted on the I6 mounts (farther back in the engine bay) with a manual transmission? I know this is a weird request, but I have heard that the clutch linkage really gets in the way, just hoping that maybe someone here has had any luck?? __________________ 67 GMC Short Step 350/4-Speed/3.08 Posi Front/Rear Sway Bars Kelowna BC, Canada Member of DTPW

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