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 10-10-2020, 08:04 AM   #1
REDROCKER652002
Registered User
 
Join Date: Nov 2018
Location: South San Francisco CA,
Posts: 312
Latest issue

My son has a cracked exhaust manifold on his truck. 1969 with a small block chevy motor, not sure what displacement, but it is not a 350, 327 or anything like that. I think it may be a 305. Regardless, he went and ordered Hedman Headers from Summit racing. Which is cool, I applaud him for doing this on his own and wanting to give it a shot. The passenger side went on with very few issues. We are going to have to drop the starter and either reroute wires or figure out a way to put a heat shield on it. But, the drivers side has become a bit of a problem. Where the four pipes come into one, it hits the frame rail. Not bad, but just enough to not be able to tighten the bolts on the header to get a good seal. My inclination is to take the pipe out and take a ball peen hammer and just dimple in the header where it hits. I don't think it is going to cause any backflow issues, becase it really isn't that much. But we have also run into an issue with the power steering pump bracket. Part of it hooks to the front bolt of the header and since the stop manifold is thicker I am not sure how we are going to handle that. My thought is to use one of the old bolts, and just put a bunch of washers in to make up the difference. At least for now. I new 350 crate motor is in the future, so this is just more of a stop gap to fix the problem and get the truck back on the road. Also, I told him when he takes the truck to get the rest of the exhaust installed to tell the person that he is or might be planning to put a gas tank in the bacl of the frame. So, would the pipes just run on the inside of the frame rail, or outside the rail between the frame and the body? Sorry for being so stupid about this, but the last time I did this I was his age and did it on a 69 camaro z, and I remember having to dimple the back pipe due to firewall issues. Any input on possible power steering brackets and any solutions to the pipe issue would be great to hear.

The other option is to just get another stock manifold and keep the headers for when he gets the new motor.

Thanks to all

Dino AKA Dj's dad and weekend mechanic.

Damn, I wish he would have looked here first. Member is selling what looks to be the same ones used for 60 bucks. I am going to make mention that he start looking here first. LOL.
REDROCKER652002 is offline   Reply With Quote
Old 10-10-2020, 08:19 AM   #2
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 11,804
Re: Latest issue

Some people just grind a groove in the frame rail. It’s plenty strong enough to remove a little. I think factory big block trucks had a clearanced frame rail.
For the ps bracket instead of stacked washers use a longer bolt with a sleeve on the bolt made from steel pipe. Cut the pipe to the right length to just be a spacer.
Last resort is Wacka Wacka on the pipes for clearance. You can distort the whole header like that.
geezer#99 is offline   Reply With Quote
Old 10-10-2020, 08:22 AM   #3
Grumpy old man
Senior Member
 
Grumpy old man's Avatar
 
Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 6,706
Re: Latest issue

The small blocks being a 305/307/327/350 are all the same dimensions so a new engine will have the same fit issues . use a solid spacer rather than stacks of washers , Starter heat shields are good on any small block with headers . depending on what power steering pump you have changing brackets may require new hoses and brackets post a picture of what your working with .

https://www.ebay.com/i/253960905503?...CABEgJ0A_D_BwE

https://www.amazon.com/Cy-Chrome-MPB...ustrial&sr=1-2
__________________
Grumpy old man is offline   Reply With Quote
Old 10-10-2020, 08:38 AM   #4
REDROCKER652002
Registered User
 
Join Date: Nov 2018
Location: South San Francisco CA,
Posts: 312
Re: Latest issue

Awesome Thanks guys, that is exactly what I was looking for. I will show my son when he gets up and see. He works at Oreilly's so they may have the spacers already and may be able to order the heat shield. I will look again and see how much frame we may need to grind out, but I don't think it is going to be much. Worse comes to worse, I have somebody weld a box before and after the ground out part.

Thanks again.
REDROCKER652002 is offline   Reply With Quote
Old 10-11-2020, 07:59 PM   #5
garyd1961
Registered User
 
Join Date: May 2016
Location: Henderson NC
Posts: 843
Re: Latest issue

I switched to a mini starter when I put headers on mine. Been driving it for nearly 4 years now without any starter trouble. Be sure to retighten the bolts after the first run.
garyd1961 is offline   Reply With Quote
Old 10-11-2020, 08:06 PM   #6
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 2,705
Re: Latest issue

DB is the way to go no heat shields needed. It's like the Energizer bunny
Attached Images
 
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,
1968 c20 stepside
1977 Suburban sold
68 anniversary.
72c20customcamper is offline   Reply With Quote
Old 10-11-2020, 08:12 PM   #7
Boog
laying low
 
Boog's Avatar
 
Join Date: Mar 2001
Location: Searcy, Ark. USA
Posts: 9,858
Re: Latest issue

DB is?
__________________
Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
2 GMCs and 1 Tahoe
All GM..'nuff said,
Member of Jr Nation 88

I stand for the flag and kneel at the cross
Boog is offline   Reply With Quote
Old 10-11-2020, 08:19 PM   #8
72c20customcamper
Registered User
 
72c20customcamper's Avatar
 
Join Date: Jul 2018
Location: Napanoch new york
Posts: 2,705
Re: Latest issue

Quote:
Originally Posted by Boog View Post
DB is?
DB Electric they sell on Ebay and their own website great products

https://www.dbelectrical.com/
__________________
Mark
72 c20 custom camper Husky edition,66 SS396 Chevelle 1964 Hawk, 63 Avanti,62 lark
1969 AMX ,
1968 c20 stepside
1977 Suburban sold
68 anniversary.

Last edited by 72c20customcamper; 10-11-2020 at 08:27 PM.
72c20customcamper is offline   Reply With Quote
Old 10-11-2020, 09:07 PM   #9
franken
Registered User
 
Join Date: Jun 2013
Location: Somewhere
Posts: 2,668
Re: Latest issue

You can get a 1/4" pipe nipple, drill it out to 3/8" and cut it to ~7/8" long for a spacer. I'd dent the headers or pipes before hacking the frame.
franken is offline   Reply With Quote
Old 10-18-2020, 11:03 AM   #10
REDROCKER652002
Registered User
 
Join Date: Nov 2018
Location: South San Francisco CA,
Posts: 312
Re: Latest issue

Thanks for all the info, for some reason I am not getting notices of posts. I took a small grinder that my brother had, and I was able to get into the space between the frame and the block. Took a very small amount of the frame off, probably less that an eight of an inch and it fit perfect. He is going to need to bend one of the brake lines as it contacts the collector, but other than that I think we are good to go.

I am going to try and drop the started and extend the wires a bit and see if that will work. I cut them a bit tight anyway I think, so it might not be a bad thing to splice a bit of an extension into them to give me a bit more room. Live and learn.

Thanks again to all who replied. It is much appreciated. I will try and throw a picture up of what I did and how little of the frame I had to remove.
REDROCKER652002 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 04:21 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Copyright 1997-2020 67-72chevytrucks.com