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04-03-2005, 11:20 AM | #1 |
Surly*Speed*Demon
Join Date: Feb 2005
Location: New Hampshire
Posts: 60
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1987 2wd 350 headers help?!
I just put a set of headers on a 87 gmc r1500 2wd 350/m20. The problem I am having is the driverside collector is pointing right at the tranny crossmember . The original exhaust was driverside only and went up over the crossmember . If I was to cut and weld the collector it wouldn't be enough to get me over the xmember. I can't get a pipe on it to go under it either. Has anyone else had this problem on an 87??
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04-03-2005, 03:31 PM | #2 |
Registered User
Join Date: Jul 2003
Location: Lancaster, TX
Posts: 291
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What type headers are you using? Shorties or full length. I have the Edelbrock shorties w/ AIR injection on mine and the only thing that I had to do was to have a smaller size pipe installed because the headerflang was a little smaller than the original manifold flang.
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04-03-2005, 07:42 PM | #3 |
Surly*Speed*Demon
Join Date: Feb 2005
Location: New Hampshire
Posts: 60
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Flow tech full length. I removed the air inj. pipes and pump.
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04-03-2005, 08:33 PM | #4 |
BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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What you need is a dual hump crossmember from a 1 ton truck. Or build your own. A board member made this crossmember for my truck. A dual hump crossmember is almost the same design but stock. Some board members have the dual hump crossmember too.
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04-03-2005, 09:46 PM | #5 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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A good muffler guy can get around the cross member. I have headers on my son's truck (86 Chevy and my truck 84 GMC and with both of them we just angled that side a little to clear the member and then completed the pipimg run. Both trucks are lowered 31/2" and there are no clearance problems.
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04-03-2005, 10:24 PM | #6 |
Registered User
Join Date: May 2004
Location: Lubbock, Texas
Posts: 2,121
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We just welded two 3inch turn downs together to make a kick up, it was cheap and it works. No real point in making a custom crossmemeber unless you want to.
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'96 Nissan Pathfinder '02 Firebird Trans Am. '88 K5 Blazer |
04-04-2005, 04:11 AM | #7 |
Registered User
Join Date: Dec 2004
Location: Nor Cal inda 408/916
Posts: 31
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I had the same problem with my 76 stepside. The passenger side was the bigger problem. I had a buddy who does exhaust cut the collector flange back about 3 inches and used U-bends to go under the x-member and connect to my existing new 2/1/2" exhaust. The head pipes hang lower than the headers, maybe if I change to a dual hump x-member I can get the pipes up higher.
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My 1st 76 sierra classic stepside Owned: 76 chevy suburban 85 chevy K1500 90 chevy C1500 90 chevy K1500 sub 97 chevy C3500 crewcab dually 2000 chevy C3500 crewcab dually |
04-04-2005, 04:26 PM | #8 | |
Surly*Speed*Demon
Join Date: Feb 2005
Location: New Hampshire
Posts: 60
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