73-87chevytrucks.com

73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: cracker0169 on June 01, 2008, 11:38:39 am

Title: lack of clearance between header and shackle
Post by: cracker0169 on June 01, 2008, 11:38:39 am
Does anyone else have this problem? On my 81 chasis, my passenger side header collector contacts my spring shackle. I replaced the factory weak ones with some from ORD in hopes that that would help my situation (plus the other added benefits) but it didnt. I ground the bolt off some for clearance but my collector ring is getting torn up ! I'm running a set of Flowtech headers made for these trucks. Anyone else with similiar problems or suggestions?!
Title: Re: lack of clearance between header and shackle
Post by: Blazin on June 01, 2008, 07:30:09 pm
I had a truck years ago that had this problem. I heated the headers, and bent them over about a 1/2".
Title: Re: lack of clearance between header and shackle
Post by: dunedigger on June 02, 2008, 11:57:28 pm
My buddy tried to order a set of dynomax headers from summit and they talked him into summit brand and they did the same thing.  I told him to send the headers back and he still hasn't got the truck done 10 years later and still hasn't fixed the problem.  I agree with blazin but everytime I get a torch near exhaust, that seems to be the first place it will rust out.  I'm not sure what else you would do.  ???
Title: Re: lack of clearance between header and shackle
Post by: VileZambonie on June 03, 2008, 05:08:25 am
Get a different set of headers.
Title: Re: lack of clearance between header and shackle
Post by: Blazin on June 03, 2008, 08:35:39 am
Round here as soon as you run the exhaust one winter, thats the first place they rust out. So I don't have to worry about heating one spot and having it be the only rusty area!!!!
Title: Re: lack of clearance between header and shackle
Post by: chubby07 on October 08, 2008, 06:09:10 pm
I had that problem with my 1980 and what I did was cut the header right on the flange and I slid the exhaust pipe right over my header and than you can A weld them or B clamp them just like you would a muffler which is what I did and it works great and no leaks also I tried several headers on my truck hooker dynoflow headman and two others and I found that the cheapy flowtech headers fit and looked the best. I bought the black ones which was the only ones they had so after I cut these and bent them very little so they would work with my angle plugged heads I sent them in to get ceramic coated. Not sure you want to do that much work or not, but mine turned out great.
Title: Re: lack of clearance between header and shackle
Post by: David Hall on December 15, 2008, 04:42:54 am
I run a set of Hedman headers (pn 69090 If I remember right) on my 85 C10 and they also rubbed on the lower shackle bolt on the right spring. I heated and dimpled the collector also. Not sure why so many different header manufactures have this problem. At first I thought it was the brand I bought, but it seems now it's not just Hedman. ???
Title: Re: lack of clearance between header and shackle
Post by: choptop on December 15, 2008, 07:44:51 am
Ran into the same problem trying to put Flowtech headers from a 4x4 into a 2wd. The headers are different for some reason. Hadnt seen the same issue with the Headmans. They are just routed different.I agree with Vile
Get a different set of headers.