How do I install headers? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Sport/Truck · 01-21-2007, 03:01 PM

I wanted to test fit my headers these headers they are L 5423 hooker comp. the hooker guide says it fits blazer/jimmy/Yukon/tahoe 4x4 69-72. I don’t think there’s that much difference, but don’t know. Anyone?
Should I be able to put these on with the motor installed?

Longhorn Man · 01-21-2007, 03:08 PM

yep.
Disconnect the battery, make sure your starter is installed and wired.
Have an assistant help you out... a kid over 12 should be able to help. If I remember right, the passenger side has to come up from underneath, while the drivers side can come in from the top. Watch the engine oil dipstick...esp if it is on the passenger side.

cdowns · 01-21-2007, 03:11 PM

over the years i've found it helps to have an engine hoist handy and unbolt the engine stands so you can jiggle the engine a bit to get clearance it also helps to have it jacked up on jackstands so you can feed them straight down always disconnect battery and remove the starter too do drivers side first(more difficult)

Sport/Truck · 01-21-2007, 03:13 PM

That’s what I thought, I’m trying to get the d side in now, and it seems not to fit. Do you think that this being for a 4x4 and not a 2wd truck has anything to do with this?

jhow66 · 01-21-2007, 03:15 PM

And to save a little money--remove your plugs first. (also saves a few cuss words-lol).

Sport/Truck · 01-21-2007, 03:15 PM

Ok, it’s the driver’s side that’s giving me fits.
Do you think the 4x4 headers will work?

FarmTruk · 01-21-2007, 03:54 PM

Quote:

Originally Posted by Sport/Truck

Ok, it’s the driver’s side that’s giving me fits.
Do you think the 4x4 headers will work?

Using the part finder at Holley's website, they show different P/N's for C & K models...

http://www.holley.com/search.asp

They may fit, but likey would require some persuasion. Good Luck...

cdowns · 01-21-2007, 04:14 PM

unbolt the driver side engine tower then lift the engine GENTLY from the drivers side of intake manifold it will give you alot of clearance/you might also try sticking them up from the bottom

Sport/Truck · 01-21-2007, 04:16 PM

The headers don’t fit. They hit the “a” arm where it pivots.
Looks like I need to become a site supporter and see if anyone want to buy or trade.
Oh well.
s/t

Longhorn Man · 01-21-2007, 04:52 PM

interesting... My first headers (of an unknown brand) were off an 85 K/5.
Is it close enough that you can just dimple it?

Sport/Truck · 01-21-2007, 06:23 PM

Quote:

Originally Posted by Longhorn Man

interesting... My first headers (of an unknown brand) were off an 85 K/5.
Is it close enough that you can just dimple it?

I looked at that…but it’s a good 1.5~2 inches off.

This is on the drivers side I didn’t even try the passenger side.
Thanks for the suggestion though.
s/t

*rage'nrat638* · 01-21-2007, 08:26 PM

Quote:

Originally Posted by Sport/Truck

The headers don’t fit. They hit the “a” arm where it pivots.
Looks like I need to become a site supporter and see if anyone want to buy or trade.
Oh well.
s/t

click HERE

brak · 01-21-2007, 09:09 PM

your truck is 2wd?

If you need them, i have a set of Hooker longtubes that have been sitting for the last 6 years in the box. I bought them for a project i no longer have.
I'll go out now and look at the model number

I was gonna throw these in the for sale section, but i'll give them to you cheap if you want them.
PM me if interested.

brak · 01-21-2007, 09:21 PM

They are P/N 2452
Here's the link to them on summit's website Hooker 2452

Quote:

Originally Posted by Summit website

Make CHEVROLET
Model BLAZER
Beginning Year 1969
Ending Year 1991
Engine Type V8
Engine Size 5.7L/350
Engine Family Chevy small block Gen I
Engine Swap No
Drivetrain 2WD
Power Steering Yes
Power Brakes Yes
Air Conditioning Yes
Standard Transmission Column Shift Yes
Standard Transmission Floor Shift Yes
Automatic Transmission Column Shift Yes
Automatic Transmission Floor Shift No
Application Footnotes: 117 - Reducers available with oxygen sensor on 1980 and later models.
127 - Will not fit angle plug heads.

*rage'nrat638* · 01-21-2007, 09:36 PM

thats a great header..thats what i have on my 69

01-21-2007, 03:01 PM	#1
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	How do I install headers? I wanted to test fit my headers these headers they are L 5423 hooker comp. the hooker guide says it fits blazer/jimmy/Yukon/tahoe 4x4 69-72. I don’t think there’s that much difference, but don’t know. Anyone? Should I be able to put these on with the motor installed? __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-21-2007, 03:08 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How do I install headers? yep. Disconnect the battery, make sure your starter is installed and wired. Have an assistant help you out... a kid over 12 should be able to help. If I remember right, the passenger side has to come up from underneath, while the drivers side can come in from the top. Watch the engine oil dipstick...esp if it is on the passenger side.

01-21-2007, 03:11 PM	#3
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: How do I install headers? over the years i've found it helps to have an engine hoist handy and unbolt the engine stands so you can jiggle the engine a bit to get clearance it also helps to have it jacked up on jackstands so you can feed them straight down always disconnect battery and remove the starter too do drivers side first(more difficult) __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

01-21-2007, 03:13 PM	#4
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: How do I install headers? That’s what I thought, I’m trying to get the d side in now, and it seems not to fit. Do you think that this being for a 4x4 and not a 2wd truck has anything to do with this? __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-21-2007, 03:15 PM	#5
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: How do I install headers? And to save a little money--remove your plugs first. (also saves a few cuss words-lol). __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

01-21-2007, 03:15 PM	#6
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: How do I install headers? Ok, it’s the driver’s side that’s giving me fits. Do you think the 4x4 headers will work? __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-21-2007, 04:14 PM	#8
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: How do I install headers? unbolt the driver side engine tower then lift the engine GENTLY from the drivers side of intake manifold it will give you alot of clearance/you might also try sticking them up from the bottom __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

01-21-2007, 04:16 PM	#9
Sport/Truck Sierra Grande Club Join Date: Jan 2007 Location: New Mexico USA Posts: 2,433	Re: How do I install headers? The headers don’t fit. They hit the “a” arm where it pivots. Looks like I need to become a site supporter and see if anyone want to buy or trade. Oh well. s/t __________________ 1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe.

01-21-2007, 04:52 PM	#10
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: How do I install headers? interesting... My first headers (of an unknown brand) were off an 85 K/5. Is it close enough that you can just dimple it?

01-21-2007, 09:09 PM	#13
brak Registered User Join Date: Apr 2006 Location: MinneSNOWta Posts: 1,381	Re: How do I install headers? your truck is 2wd? If you need them, i have a set of Hooker longtubes that have been sitting for the last 6 years in the box. I bought them for a project i no longer have. I'll go out now and look at the model number I was gonna throw these in the for sale section, but i'll give them to you cheap if you want them. PM me if interested. __________________ 2003 GMC Sierra 1500 WT 1995 Nissan Hardbody 2016 Hyundai Veloster Turbo DC2 (SW/AW) Clyde W. Harvey USN "Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery" Winston Churchill Last edited by brak; 01-21-2007 at 09:25 PM.

01-21-2007, 09:36 PM	#15
rage'nrat638 Account Suspended Join Date: Mar 2003 Location: THE FALL GUY CHICAGO IL Posts: 5,883	Re: How do I install headers? thats a great header..thats what i have on my 69 Last edited by rage'nrat638; 07-12-2007 at 06:58 AM.



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