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

$20071k10 · 08-18-2015, 04:33 PM

What headers are you 4 speed guys running? can you run long tubes or are you stuck with shorty's

snj8198 · 08-18-2015, 04:41 PM

Hooker long tubes with full 3". Are you running a sb or bb?

b454rat · 08-18-2015, 06:52 PM

I ran chevelle headers on my big block 4wd. Hydro clutch need to moved but no big deal.

**special-K** · 08-18-2015, 10:08 PM

I always run full-length. You just have to look at the rear tube on the driver side and make sure it goes straight down or slightly forward. The only other possible issue is if they don't drop down enough to clear the lower arm on the bell-crank. I've had to cut that off and move over

$20071k10 · 08-19-2015, 12:45 PM

Quote:

Originally Posted by snj8198

Hooker long tubes with full 3". Are you running a sb or bb?

I am running a sb you wouldn't happen to have a p# would you

snj8198 · 08-19-2015, 02:54 PM

I'm running a big block so i guess that doesn't help ya but I'm running these:

http://www.summitracing.com/parts/hok-2463-1hkr

$20071k10 · 08-19-2015, 05:57 PM

thank you though

$20071k10 · 08-20-2015, 01:31 PM

any one have p# for long tube headers that work good on a sbc with a 4 speed

xbanone · 08-21-2015, 10:32 PM

Doug Thorley 364-y

Mike C · 08-25-2015, 08:50 AM

Heddman was the only header I could find that would work with the manual trans linkage when I put them on the Jimmy. I ditched them for 2 1/2" 'vette manifolds and could not be happier. My butt-o-meter shows about equal output on the top end with a little cam (Crane 266, 210 @ .050) and feels like it makes more low end torque. I went from 2 1/2" pipes on the headers to 2 1/2" on the manifolds which helped equalize the ouput I'm sure. Walker DynoMax Hemi Turbo mufflers were my choice. Nice sound with LOTS of sound deadening.
Posted via Mobile Device

RedRoad · 08-25-2015, 11:53 PM

MikeC, did you use the dorman 2 1/2 ram horns? If so how are they holding up?

Thanks

**JIMs70GMC** · 08-26-2015, 01:54 AM

I have the GM 2.5" ramhorns on my 70 GMC for 10+ years now, running strong.

Mike C · 08-26-2015, 09:00 AM

I don't remember where I ordered them from but they are most likely the same as the Dormans. They've been on the truck 15 years now I bet. I bandsawed the generator mounts off and then painted them with Eastwood cast iron dressing if memory serves.
Posted via Mobile Device

RedRoad · 08-26-2015, 11:34 AM

Thanks Jim and Mike, Im considering going with some Dormans but being that they are now made in China Im wondering how they would hold up in a heavy K20 suburban that will be towing a trailer.

Mike C · 08-28-2015, 10:34 AM

I would think they would be fine. My manifolds came from Speedway motors if memory serves and they were not listed as Dormans. But most likely all are made in the same Chinese factory.

08-18-2015, 04:33 PM	#1
$20071k10 Registered User Join Date: Feb 2015 Location: Mancos,CO Posts: 101	headers What headers are you 4 speed guys running? can you run long tubes or are you stuck with shorty's __________________ Brian

08-18-2015, 04:41 PM	#2
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: headers Hooker long tubes with full 3". Are you running a sb or bb? __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

08-18-2015, 06:52 PM	#3
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,464	Re: headers I ran chevelle headers on my big block 4wd. Hydro clutch need to moved but no big deal. __________________ 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon 350/4L60 6" SAS

08-18-2015, 10:08 PM	#4
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,852	Re: headers I always run full-length. You just have to look at the rear tube on the driver side and make sure it goes straight down or slightly forward. The only other possible issue is if they don't drop down enough to clear the lower arm on the bell-crank. I've had to cut that off and move over __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~

08-19-2015, 02:54 PM	#6
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: headers I'm running a big block so i guess that doesn't help ya but I'm running these: http://www.summitracing.com/parts/hok-2463-1hkr __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

08-19-2015, 05:57 PM	#7
$20071k10 Registered User Join Date: Feb 2015 Location: Mancos,CO Posts: 101	Re: headers thank you though __________________ Brian

08-20-2015, 01:31 PM	#8
$20071k10 Registered User Join Date: Feb 2015 Location: Mancos,CO Posts: 101	Re: headers any one have p# for long tube headers that work good on a sbc with a 4 speed __________________ Brian

08-21-2015, 10:32 PM	#9
xbanone Registered User Join Date: Oct 2008 Location: WV Posts: 209	Re: headers Doug Thorley 364-y __________________ 1976 K15 Short/Step 1981 C10 short/wide 1994 K1500 ECSB

08-25-2015, 08:50 AM	#10
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	Re: headers Heddman was the only header I could find that would work with the manual trans linkage when I put them on the Jimmy. I ditched them for 2 1/2" 'vette manifolds and could not be happier. My butt-o-meter shows about equal output on the top end with a little cam (Crane 266, 210 @ .050) and feels like it makes more low end torque. I went from 2 1/2" pipes on the headers to 2 1/2" on the manifolds which helped equalize the ouput I'm sure. Walker DynoMax Hemi Turbo mufflers were my choice. Nice sound with LOTS of sound deadening. Posted via Mobile Device

08-25-2015, 11:53 PM	#11
RedRoad Registered User Join Date: Jan 2015 Location: Los Angeles California Posts: 927	Re: headers MikeC, did you use the dorman 2 1/2 ram horns? If so how are they holding up? Thanks

08-26-2015, 01:54 AM	#12
JIMs70GMC user # 2756 Join Date: Jun 2001 Location: Chesapeake, Virginia Posts: 4,612	Re: headers I have the GM 2.5" ramhorns on my 70 GMC for 10+ years now, running strong. __________________ 1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm

08-26-2015, 09:00 AM	#13
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	Re: headers I don't remember where I ordered them from but they are most likely the same as the Dormans. They've been on the truck 15 years now I bet. I bandsawed the generator mounts off and then painted them with Eastwood cast iron dressing if memory serves. Posted via Mobile Device

08-26-2015, 11:34 AM	#14
RedRoad Registered User Join Date: Jan 2015 Location: Los Angeles California Posts: 927	Re: headers Thanks Jim and Mike, Im considering going with some Dormans but being that they are now made in China Im wondering how they would hold up in a heavy K20 suburban that will be towing a trailer.

08-28-2015, 10:34 AM	#15
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,723	Re: headers I would think they would be fine. My manifolds came from Speedway motors if memory serves and they were not listed as Dormans. But most likely all are made in the same Chinese factory. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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