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Old 02-07-2011, 11:18 PM   #1
flamingbig10
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Dynatech MuscleMaxx Headers

I'm plan on using the Dyna tech 67-69 camaro ls swap headers on my 80 c10 with 6.0 and 4l80e with dirty dingo adjustable motor mounts, would I have any chance these will fit
http://dirtydingo.com/store/index.ph...=1_206_305_318
http://www.speedwaymotors.com/NEW-Dy...LS2,41921.html
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1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot
Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326

Last edited by flamingbig10; 02-07-2011 at 11:19 PM.
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Old 02-10-2011, 10:44 PM   #2
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Re: Dynatech MuscleMaxx Headers

anyone, I guess I order them and see for myself if they'll fit
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1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot
Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326
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Old 02-10-2011, 10:50 PM   #3
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Re: Dynatech MuscleMaxx Headers

They LOOK like they would work. But my opinion does not really count due to my headers that looked like they would fit but they hit everything even remotely close to my truck. If they do fit i may ge a set one day.
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Old 02-11-2011, 02:57 PM   #4
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Re: Dynatech MuscleMaxx Headers

If you get em keep us posted as I'm headerless at the moment!
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Old 02-11-2011, 03:08 PM   #5
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

my Dynatechs for '70-81 Camaro w LSx swap:













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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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Old 02-11-2011, 07:04 PM   #6
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Re: Dynatech MuscleMaxx Headers

Kurt those dyna's you got are gorgeous! I would buy a set rt. now but they hang to low for my truck
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Old 02-12-2011, 12:41 AM   #7
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

thanks mac. I really wanted to keep everything between the frame rails...but since I'll be staying with a static drop in the front, even if/when I bag the rear, it shouldn't be a problem.
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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Old 02-12-2011, 12:51 AM   #8
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Re: Dynatech MuscleMaxx Headers

Kurt, from your pics it seem you had to notch the drivers side frame to make the the Rh header fit, did you do any mod(s) to the passanger side?
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Old 02-12-2011, 01:00 AM   #9
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

nope...didn't have to notch a thing...but if I don't replace my motor mounts with solid mounts and a mid plate.... I'll need to trim them just slightly on the tubes that have the "Dynatech" tab welded to them.
That said...if I moved the motor all the way back against the firewall they'd clear fine.
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken

Last edited by 68GMCCustom; 02-12-2011 at 01:01 AM.
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Old 02-13-2011, 08:23 PM   #10
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Re: Dynatech MuscleMaxx Headers

68GMCCustom, very nice! Would you happen to know the p/t #? I was wondering what you think the height is from the exhaust port to the lowest point as well. I have a PB cross member so I am hoping that these might hang about flush with the bottom of the frame rail. Thanks
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Old 02-13-2011, 10:25 PM   #11
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Re: Dynatech MuscleMaxx Headers

its looks like they'll work with a little trimming but they may hang down to low past the frame
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1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot
Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326
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Old 02-14-2011, 12:18 PM   #12
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

part# is 115-909400 (30C)....but they do hang below the frame by a few inches.

....not sure if the 30C is needed at the end of that part number btw.
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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Old 02-14-2011, 02:57 PM   #13
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Re: Dynatech MuscleMaxx Headers

I think the only time you'd have a problem is driving aired out.If you look at his pics no.6 shows how far below the rails they hang.It also depends if your using drop spindles W/ your drop member,I am not & they still look to close for me
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Old 02-14-2011, 03:04 PM   #14
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

if it hit something....I'd probably loose the oil pan before the headers.
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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Old 02-14-2011, 04:42 PM   #15
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Re: Dynatech MuscleMaxx Headers

yea I hear ya, it looks like their dead even W/ the bottom of the pan & I'm using the same pan you are. Makes me wonder if I should take a shot at them.I already have to sell the dt's I bought [ they hit the firewall] really dont want to have to do it again!
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Old 02-14-2011, 06:49 PM   #16
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

isn't your motor positioned way back?
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken
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Old 02-15-2011, 08:30 AM   #17
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Re: Dynatech MuscleMaxx Headers

Don't mean to highjack the thread, but mac72, your running a DM correct? It's been a while since I order mine, but thought it raised the motor something in the range of 2". Is that right or am I just telling myself this so I'll order these headers, lol.

Mac72, are the DT's 1&5/8" ?
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Old 02-15-2011, 02:51 PM   #18
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Re: Dynatech MuscleMaxx Headers

Kurt,Thats what I was thinking but looking at your pic no.7 it looks to be about a .5" further back than yours.It may be up higher though like big shoe stated.If you remember that post on the high hump I think mines a little higher in the bay Hmmmm.

bigshoe24,My crossmember is from suicide doors but it does look like the early porterbuilt units & I didnt inquire about wether or not it raised the mtr. or not.The mounts are ls specific & it fits although it is tight at the front of the pan & the crossmember.Some of this has to do w/ the tranny crossmember placement also.
Yes the dt's are 1 5/8" they are nice headers but the drivers rear tube hit my firewall.
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Old 02-15-2011, 10:31 PM   #19
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Re: Dynatech MuscleMaxx Headers

Very tempted to order these. I'm going to call Dynatech and see what the difference is between the 70'-81' camero and the 67'-69' . The p/t # you gave matches the 67' -69' btw
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Old 02-16-2011, 11:59 AM   #20
68GMCCustom
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Re: Dynatech MuscleMaxx Headers

mine are the 1 7/8" x 3" coated... I bought from Speedway, off this page:

http://www.speedwaymotors.com/NEW-Dy...LS2,41927.html

If you go to the Dynatech page you'll see that they also offer various stepped headers also but for sbc.

http://www.afabcorp.com/AFCO_Dynatec...uscle_camaro70

....but they only offer the 1.88" (actually 1 7/8") in 2.5" on their page....so obviously the 03C on Speeday's refers to a 3" coated header...since they show 025C is 2.5".

only this one (mine but 2.5" reducers) is listed as LSX and is not stepped...others are for sbc:
115-90940025C 1.88 LSX 70-81 Camaro Hdr Coated w/2.5" Reducers $399.99

and here are the '67-'69 numbers:
115-91140025C 1.88 LSX 67-69 Camaro/68-74 Nova Hdr Coated w/2.5 Reducer $399.99
115-91140030C 1.88 LSX 67-69 Camaro/68-74 Nova Hdr Coated w/3.0 Reducer $399.99
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Kurt -

'68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy
'72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close
'06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD
'18 Kia Sorento - wife's econo-driver
'95 Chevy S10 - reg cab shortbed, LS, 4.3, auto...

my '68's powertrain and chassis build -links broken
A surprise phase - carb to efi -links broken

Last edited by 68GMCCustom; 02-16-2011 at 12:03 PM.
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Old 02-21-2011, 09:16 PM   #21
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Re: Dynatech MuscleMaxx Headers

I'm going to go for it with 67-69 camaro headers
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1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot
Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326
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Old 02-22-2011, 01:52 PM   #22
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Re: Dynatech MuscleMaxx Headers

Make sure you let us know how they fit!
Thnaks Mac
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Old 02-25-2011, 02:38 AM   #23
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Re: Dynatech MuscleMaxx Headers

X2^
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Old 02-27-2011, 04:17 AM   #24
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Re: Dynatech MuscleMaxx Headers

I called speedaway motors and they said they don't carry the 67-69 headers any more and summit is back ordered for 2 weeks
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1980 c-10 short bed lowered, cammed 6.0, 4l80e 3600 stall, smp tune, wilwoods, and flames best time so far best et 7.86 @87 on motor 7.57 90 on a 75 shot
Build http://67-72chevytrucks.com/vboard/s...d.php?t=283326
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Old 02-27-2011, 02:56 PM   #25
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Re: Dynatech MuscleMaxx Headers

I wonder what the difference between the 67-69 vs. 70-81 camaro headers? If it's the same part number then I assume it's the exact same part. Are there no other swap headers that will fit these trucks?
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