The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain > LSx Swaps

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-09-2014, 11:16 PM   #1
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Header bolts size

Ok one of the 100 little things I need to do is find some header bolts as I lost the manifold bolts when they were taken off and for some reason I cant seem to find them or at least decently priced ones. I have found some online but they dont say the size or thread pattern, I know they are metric Im thinking M8x1 or 1.25 does anyone know the size I need for my 07 5.3 ? and where to go to get some ? I went to the local Home Depot but all they had was SAE grade 8 not in metric tho...I refuse to pay the 30-60 bucks that these places i found want. they are just freaken bolts, somewhere there has to be a place I can go to find these at a reasonable price... thanks for any help oh and I am going with some shorty headers if that makes a difference
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-10-2014, 12:03 AM   #2
Blackpony
Registered User
 
Blackpony's Avatar
 
Join Date: Feb 2013
Location: Aubrey, TX
Posts: 308
Re: Header bolts size

What I am finding it is an 8mm x 1.25 thread. Hit up lowes or home depot you should be able to get them for a couple bucks.
Blackpony is offline   Reply With Quote
Old 06-10-2014, 02:41 AM   #3
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Quote:
Originally Posted by desertdogg View Post
Ok one of the 100 little things I need to do is find some header bolts as I lost the manifold bolts when they were taken off and for some reason I cant seem to find them or at least decently priced ones. I have found some online but they dont say the size or thread pattern, I know they are metric Im thinking M8x1 or 1.25 does anyone know the size I need for my 07 5.3 ? and where to go to get some ? I went to the local Home Depot but all they had was SAE grade 8 not in metric tho...I refuse to pay the 30-60 bucks that these places i found want. they are just freaken bolts, somewhere there has to be a place I can go to find these at a reasonable price... thanks for any help oh and I am going with some shorty headers if that makes a difference
If you have ACE, they always help me, especially if you have one of the "old school" mom n pop owned ones. I've always had the hardware guy throw me a bone of expensive hardware as an enthusiast. OTherwise, Fastenal is a really nice resource too, just be patient with the employees...they don't tend to work auto-specific.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-10-2014, 07:24 AM   #4
truckdude239
Senior Member
 
truckdude239's Avatar
 
Join Date: Sep 2005
Location: Lewisville, Nc
Posts: 10,237
Re: Header bolts size

I ordered mine from advance auto from Dorman products they are coated in something g that makes them look gold and is suppose to help them from seizeing in the heads and breaking
__________________
David fuller
Ase Certified Mechanic
Click here to help support our board!!


1971 Chevy c-10 under going a 4.8l LSx swap

Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305

2007 Honda Accord my daily 145kmiles
2002 Honda Accord 4 door With 330k(sisters car)
2005 toyota Avalon 228k( brothers car)
2002 Sububran 5.3 245k
2000 Tahoe 5.3l 378

General manager for Marco's Carwash & lube
truckdude239 is offline   Reply With Quote
Old 06-10-2014, 12:41 PM   #5
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Re: Header bolts size

Thanks guys for the help, going to check ace hardware, I didn't even think about them. Truckdude I have antiseize in a tube but thanks for the advice
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-10-2014, 01:10 PM   #6
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Re: Header bolts size

Quote:
Originally Posted by Blackpony View Post
What I am finding it is an 8mm x 1.25 thread. Hit up lowes or home depot you should be able to get them for a couple bucks.
Thanks that's what I was thinking but wasn't sure
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-10-2014, 01:35 PM   #7
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Isn't the goldish color zinc?
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-10-2014, 04:31 PM   #8
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: Header bolts size

I have a set left over, from a set of Hooker shorties....I used studs/ nuts on mine? Yours for the mail price, but it may take a few days, from my spot in Illinois, to yours in Cali? They are black oxide bolts, nothing special....if you want them,I don't need anything , but the mail charge Shoot me a PM, on the zip/addy, & I trust that you will cover the shipping cost....or I don't really care about it....just pay it forward, to the next player longhorn
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 06-10-2014, 06:00 PM   #9
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Quote:
Originally Posted by crazy longhorn View Post
I have a set left over, from a set of Hooker shorties....I used studs/ nuts on mine? Yours for the mail price, but it may take a few days, from my spot in Illinois, to yours in Cali? They are black oxide bolts, nothing special....if you want them,I don't need anything , but the mail charge Shoot me a PM, on the zip/addy, & I trust that you will cover the shipping cost....or I don't really care about it....just pay it forward, to the next player longhorn
Another known Good Dude on this forum. I've been awestruck with the transparent generosity on this forum. I've been given parts by various members 3-4 times now, and always made a point to pay it forward. **knock on wood** but that sort of act actually works here.



Now,
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-10-2014, 06:30 PM   #10
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: Header bolts size

Quote:
Originally Posted by BR3W CITY View Post
Another known Good Dude on this forum. I've been awestruck with the transparent generosity on this forum. I've been given parts by various members 3-4 times now, and always made a point to pay it forward. **knock on wood** but that sort of act actually works here.



Now,
Thanks for the thumbs up bro! If we all played that way....it would be a sweet world Longhorn BTW, one sweet truck that you have!
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 06-11-2014, 01:18 AM   #11
littlevictories
Registered User
 
Join Date: Dec 2013
Location: Portland, Ore.
Posts: 348
Re: Header bolts size

Quote:
Originally Posted by BR3W CITY View Post


Now,

you're in milwaukee

YOU GIVE US BEER!
littlevictories is offline   Reply With Quote
Old 06-11-2014, 02:08 AM   #12
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: Header bolts size

...or some good Longhorn
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 06-11-2014, 02:16 AM   #13
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Quote:
Originally Posted by crazy longhorn View Post
...or some good Longhorn
Damn, just like in real life, people figure Ima just show up with everything.
Oil....its not just for your motor anymore...
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-11-2014, 02:33 AM   #14
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Quote:
Originally Posted by desertdogg View Post
Thanks that's what I was thinking but wasn't sure
btw you can get a set of 12,16 or 17 in that size from Afco for under $10
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-11-2014, 01:25 PM   #15
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Re: Header bolts size

Quote:
Originally Posted by crazy longhorn View Post
I have a set left over, us from a set of Hooker shop at ties....I used studs/ nuts on mine? Yours for the mail price, but it may take a few days, from my spot standardin Illinois, to yours in Cali? They are black oxide bolts, nothing special....if you want them,I don't need anything , but the mail charge Shoot me a PM, och is aboun the zip/addy, & I trust that you will cover the shipping cost....or I don't really care about it....just pay it forward, to the next player longhorn
Thanks Crazy longhorn, I really appreciate your generous offer but I picked some up yesterday at Fastenal they had packages of five for a few bucks and you are correct about the world today thanks bud.

Quote:
Originally Posted by BR3W CITY View Post
btw you can get a set of 12,16 or 17 in that size from Afco for under $10
on my way to ace hardware I found a fastenal and found those m8 bolts in the gold color bolts. They have a zinc coating. I also found that metric bolts are not rated like standard is grade rated metric is class rated these bolts are class 10.8 which is close to the grade 8 in sae

Thanks everyone now that's one less thing I need to worry about
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-12-2014, 03:05 AM   #16
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: Header bolts size

Quote:
Originally Posted by BR3W CITY View Post
Damn, just like in real life, people figure Ima just show up with everything.
Oil....its not just for your motor anymore...
No, I would share my "shine"....you don't need to bring it all Longhorn
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 06-12-2014, 03:12 AM   #17
crazy longhorn
Fabricate till you "puke"
 
Join Date: Jun 2002
Location: Ill
Posts: 9,402
Re: Header bolts size

Quote:
Originally Posted by desertdogg View Post
Thanks Crazy longhorn, I really appreciate your generous offer but I picked some up yesterday at Fastenal they had packages of five for a few bucks and you are correct about the world today thanks bud.

on my way to ace hardware I found a fastenal and found those m8 bolts in the gold color bolts. They have a zinc coating. I also found that metric bolts are not rated like standard is grade rated metric is class rated these bolts are class 10.8 which is close to the grade 8 in sae

Thanks everyone now that's one less thing I need to worry about
We got a tad off topic...all in fun, guys blowin the chit , back/forth? Good to see that you have it covered. Best of fun, longhorn
__________________
69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....
crazy longhorn is offline   Reply With Quote
Old 06-18-2014, 04:49 PM   #18
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Re: Header bolts size

I can't seem to catch a break with this build I was getting so close to start up now this... Found one in each head as I was mounting my headers...pulled both heads and now in machine shop to have them pulled and since its in there doing a complete valve job as well
Name:  20140613_141939.jpg
Views: 124
Size:  52.1 KB
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-18-2014, 05:40 PM   #19
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

Ya, thats what anti-seize was for...but most of us forget it. Thats also why the stud-style replacement has gotten more popular, as its much less likely to sheer at the nut.
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-18-2014, 09:27 PM   #20
desertdogg
Registered User
 
desertdogg's Avatar
 
Join Date: Jan 2012
Location: San Diego, Ca
Posts: 249
Re: Header bolts size

Quote:
Originally Posted by BR3W CITY View Post
Ya, thats what anti-seize was for...but most of us forget it. Thats also why the stud-style replacement has gotten more popular, as its much less likely to sheer at the nut.
I wonder if they are even grade 8 or class 10.9 metric....been researching this and seems to be a very popular topic so I guess it happens alot ! I think I was seeing red when I discovered this purple after the second one.
__________________
Trying to get thru my LS swap
desertdogg is offline   Reply With Quote
Old 06-19-2014, 10:10 AM   #21
littlevictories
Registered User
 
Join Date: Dec 2013
Location: Portland, Ore.
Posts: 348
Re: Header bolts size

yeah I've had like 4 now in the coupla motors ive messed with
they're pretty dang easy to get out at least
littlevictories is offline   Reply With Quote
Old 06-19-2014, 08:48 PM   #22
Classic-Steele
Registered User
 
Classic-Steele's Avatar
 
Join Date: Oct 2013
Location: Westlock, Alberta Canada
Posts: 82
Re: Header bolts size

I went with stainless bolts. not as common, as they're metric, but they are out there and should hold up pretty good.
Classic-Steele is offline   Reply With Quote
Old 06-20-2014, 09:50 AM   #23
KMC3420
Registered User
 
KMC3420's Avatar
 
Join Date: Dec 2012
Location: Harrison, AR
Posts: 1,065
Re: Header bolts size

Anybody know where to get a good set of studs for the manifolds, I cant seem to find many of them.
__________________
Keagan
68 SWB C-10 original 350 A/C 503 Mean Green
KMC3420 is offline   Reply With Quote
Old 06-20-2014, 12:48 PM   #24
BR3W CITY
meowMEOWmeowMEOW
 
BR3W CITY's Avatar
 
Join Date: Sep 2009
Location: MKE WI
Posts: 7,128
Re: Header bolts size

http://www.summitracing.com/parts/arp-434-1301
__________________
'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING

MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD
BR3W CITY is offline   Reply With Quote
Old 06-20-2014, 12:50 PM   #25
KMC3420
Registered User
 
KMC3420's Avatar
 
Join Date: Dec 2012
Location: Harrison, AR
Posts: 1,065
Re: Header bolts size

Thank you sir, that is exactly what I was looking for.
__________________
Keagan
68 SWB C-10 original 350 A/C 503 Mean Green
KMC3420 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:48 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com