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 > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 11-03-2010, 10:56 PM   #1
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Is This Normal?

I have no idea who manufactured these headers but I seriously doubt this is normal. I'm guessing the engine mount is shot which caused the header to rub against the frame rail. Wacha All think? I'm planning on pulling the engine and tranni this weekend.
Name:  IMG_20101023_110517.jpg
Views: 770
Size:  40.2 KB
Cisco714 is offline   Reply With Quote
Old 11-03-2010, 11:56 PM   #2
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Is This Normal?

I'm guessing the headders were a poor design for the truck, not the first time that kind of interfearance has happened. but still it won't hurt to check the motor mounts while your at it.
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
swamp rat is offline   Reply With Quote
Old 11-04-2010, 01:32 AM   #3
stllookn
Saving 1 truck at a time!
 
stllookn's Avatar
 
Join Date: Aug 2001
Location: Kent, WA
Posts: 6,465
Re: Is This Normal?

I think I have a set just like that with the crease in them...they are hanging on my fence...LOL! Probably not made for trucks.
__________________
'68 C20 Longhorn 50th Anniversary 400/TH400
'68 C20 Longhorn 50th Anniversary 468/TH400w/buckets
'72 C20 Halfhorn (Longhorn w/o cab and front clip)
'69 Flxible Cruiser (look up ugly in the dictionary)
stllookn is offline   Reply With Quote
Old 11-04-2010, 07:15 AM   #4
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

Thanks for the replies. I guess I'm in the market for some new headers... but I'm still pulling the engine this weekend so I can dress it up and paint the block with por 15.
Posted via Mobile Device
Cisco714 is offline   Reply With Quote
Old 11-04-2010, 09:39 AM   #5
Lee H
Registered User
 
Lee H's Avatar
 
Join Date: Jun 2010
Location: Upland Ca
Posts: 4,147
Re: Is This Normal?

Not uncommon to have to massage the headers even the ones made for our trucks. That crease looks like it was a result of a broken motor mount.
__________________
1972 C10 SWB, Air, PS, PB, 350/350THM. Second owner.

1965 Corvette roadster, 44K miles, 327/365 SHP, 4 speed, side exhaust, knockoffs, teak, second owner (bought in 1970), Have ALL numbers matching components.

My frame off restoration thread: http://67-72chevytrucks.com/vboard/s...d.php?t=556703
Lee H is offline   Reply With Quote
Old 11-04-2010, 09:46 AM   #6
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

Quote:
Originally Posted by Lee H View Post
Not uncommon to have to massage the headers even the ones made for our trucks. That crease looks like it was a result of a broken motor mount.
I tend to be leaning in that direction as well. The passenger side shows a clearence of about 1.5" so I'll know for sure by this weekend. Thanks for the input
Cisco714 is offline   Reply With Quote
Old 11-04-2010, 09:50 AM   #7
60ratrod
yes, i do
 
60ratrod's Avatar
 
Join Date: Jun 2007
Location: Spokane, wa
Posts: 2,734
Re: Is This Normal?

yeah the brand new flowtechs that i put on my 72 about 3 years ago hit the passenger side bracket that the motor mounts sit on. i ended up grinding some off the bracket to get it to fit
__________________
ERROR 404....... SNAPPY COMEBACK NOT FOUND
_______________________________________________________________________________________________

-60 Chevy C10, dead 350/good th350 combo, sitting on a 76 c10 blazer frame, built from 11 different vehicles "the abomination"
-07 gmt900 silverado 1500 lt xcab z71, granite blue
-81 suzuki gs650g "shelah"- current project
-81 kz1000m1 csr "sarge" -next project (just beautification)
-07 kawasaki vulcan classic vn900
60ratrod is offline   Reply With Quote
Old 11-05-2010, 02:07 AM   #8
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Is This Normal?

My Doug Thorley Try Y headders clear the frame just fine on my 72 4X4, but they do hang down below the frame. I bought them around 95 and have not had one problem with them. admittedly tho this truck isn't allways a daily driver

I will add tho that i had to go to short plugs and heat insulation sleeves on the plug wires.
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's

Last edited by swamp rat; 11-05-2010 at 02:08 AM.
swamp rat is offline   Reply With Quote
Old 11-06-2010, 11:43 AM   #9
70short/step
Registered User
 
70short/step's Avatar
 
Join Date: Dec 2003
Location: Stockton, CA
Posts: 1,579
Re: Is This Normal?

Quote:
Originally Posted by swamp rat View Post
My Doug Thorley Try Y headders clear the frame just fine on my 72 4X4, but they do hang down below the frame. I bought them around 95 and have not had one problem with them. admittedly tho this truck isn't allways a daily driver

I will add tho that i had to go to short plugs and heat insulation sleeves on the plug wires.
This is Exactly the Response I could of wrote of my Brothers Blazer....cept his is a Daily Driver!
__________________
For every person with a spark of genius, There are a hundred with ignition trouble.

70 Short/Step
70short/step is offline   Reply With Quote
Old 11-05-2010, 03:39 AM   #10
texanidiot25
Eat My Rust
 
texanidiot25's Avatar
 
Join Date: Jan 2007
Location: Cypress, Texas
Posts: 3,362
Re: Is This Normal?

I once put a camera under the hood to record engine sound... You'd be surprised at how much the engine moves around as the frame flexes over things, like curbs. My headers fit perfect when I 1st got it, started to notice dents in the #1 cylinder's tube when I pulled them to change header gaskets.. And then the sucker didn't want to go back in. Had to dent the header a bit to get it to clear fine.
texanidiot25 is offline   Reply With Quote
Old 11-05-2010, 07:12 AM   #11
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

Quote:
Originally Posted by texanidiot25 View Post
I once put a camera under the hood to record engine sound... You'd be surprised at how much the engine moves around as the frame flexes over things, like curbs. My headers fit perfect when I 1st got it, started to notice dents in the #1 cylinder's tube when I pulled them to change header gaskets.. And then the sucker didn't want to go back in. Had to dent the header a bit to get it to clear fine.

That's a pretty good idea ill definitely try that if that's what it comes down too.
Posted via Mobile Device
Cisco714 is offline   Reply With Quote
Old 11-05-2010, 05:24 PM   #12
bigdogboxers
Registered User
 
bigdogboxers's Avatar
 
Join Date: Aug 2009
Location: Rathdrum Idaho
Posts: 197
Re: Is This Normal?

The v8 motors sit higher and back a bit more than on the 2 wheel drives which gives a little more room for the headers. but way less room for the distributor and cap...
Attached Images
  
bigdogboxers is offline   Reply With Quote
Old 11-05-2010, 10:25 PM   #13
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Is This Normal?

Quote:
Originally Posted by bigdogboxers View Post
The v8 motors sit higher and back a bit more than on the 2 wheel drives which gives a little more room for the headers. but way less room for the distributor and cap...

LMAO!!!! Is that what the deal is?? Motor mounts are different??

I keep seeing other trucks with a wide body distributor, and in my 4X4 i had to sent it back and get a smaller mallory unit. Man that was a bit of frustration to have during a rebuild back around 95, i was lucky i was able to get her cleaned up enough to return it.
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
swamp rat is offline   Reply With Quote
Old 11-06-2010, 01:57 AM   #14
bigdogboxers
Registered User
 
bigdogboxers's Avatar
 
Join Date: Aug 2009
Location: Rathdrum Idaho
Posts: 197
Re: Is This Normal?

Yes if you look at the first picture he is using the 2 wheel drive motor mount holes in the frame... (the front 2 holes) and on the 4 wheel drive you use taller mounts and the back 2 holes. You need to move the motor back and up to clear the front axle.

Last edited by bigdogboxers; 11-06-2010 at 01:59 AM.
bigdogboxers is offline   Reply With Quote
Old 11-06-2010, 02:17 AM   #15
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Is This Normal?

Quote:
Originally Posted by bigdogboxers View Post
Yes if you look at the first picture he is using the 2 wheel drive motor mount holes in the frame... (the front 2 holes) and on the 4 wheel drive you use taller mounts and the back 2 holes. You need to move the motor back and up to clear the front axle.
And thus the reason for the high hump right? starting to make a little more sense now.
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's

Last edited by swamp rat; 11-06-2010 at 02:17 AM.
swamp rat is offline   Reply With Quote
Old 11-06-2010, 11:35 AM   #16
bigdogboxers
Registered User
 
bigdogboxers's Avatar
 
Join Date: Aug 2009
Location: Rathdrum Idaho
Posts: 197
Re: Is This Normal?

yes i believe so...
bigdogboxers is offline   Reply With Quote
Old 11-06-2010, 12:53 PM   #17
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

I'm really liking this thread. So far I've learned quite a bit about headers and various engine mounts. I would of never thought mount placing would determine where and how high the engine sits.
Cisco714 is offline   Reply With Quote
Old 11-17-2010, 06:18 PM   #18
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

Ok so finally got around to pulling the engine and it was indeed the motor mount that was broken. Now since I have the engine out might as well dress her up a bit.
Cisco714 is offline   Reply With Quote
Old 11-17-2010, 10:19 PM   #19
swamp rat
Registered User
 
swamp rat's Avatar
 
Join Date: Oct 2007
Location: Spanaway
Posts: 8,451
Re: Is This Normal?

Quote:
Originally Posted by Cisco714 View Post
Ok so finally got around to pulling the engine and it was indeed the motor mount that was broken. Now since I have the engine out might as well dress her up a bit.

So you pulled it today, last weekend?? and you have that much sun and lack of precipitation....
__________________
Mike.

Swamp Rat build thread :
http://67-72chevytrucks.com/vboard/s...d.php?t=595019

72 3/4T 4X4
4" BDS Lift
33" BFG's
swamp rat is offline   Reply With Quote
Old 11-17-2010, 10:56 PM   #20
Cisco714
Registered User
 
Join Date: Oct 2010
Location: Anacrime Ca.
Posts: 86
Re: Is This Normal?

I pulled it this last Sunday actually, and it was 86 in southern California.
Posted via Mobile Device
Cisco714 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 03:24 AM.


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