Dual exhaust for 4wd '87 V10

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mdws1987

Junior Member
Joined
Apr 13, 2012
Posts
5
Reaction score
3
Location
Desoto, Texas
First Name
Melvin
Truck Year
1987
Truck Model
R10
Engine Size
305 cu in v8
Last month, I went to have my mufflers replaced on my 87 with the 305 tbi. The shop owner said I should remove the CAT converters as they are not needed to pass the inspection.... Did have them removed. The next day the truck would not get up to 35mph and the check engine light came on... I limped back to the shop and told him to put new converters on. That solved that problem.... I don't know why it made a difference but I thought it would be best to have new CATS with new Magnaflow Mufflers.
 

Craig S

Junior Member
Joined
Jun 2, 2017
Posts
13
Reaction score
0
Location
Stamford, CT
First Name
Craig
Truck Year
1987
Truck Model
V10
Engine Size
5.7 350
Awesome, thanks for the info. Im gonna check those out and keep u updated
 

4WDKC

Full Access Member
Joined
Jan 27, 2016
Posts
2,366
Reaction score
1,090
Location
Southern Florida
First Name
Kacy
Truck Year
1987
Truck Model
V10
Engine Size
350
Last month, I went to have my mufflers replaced on my 87 with the 305 tbi. The shop owner said I should remove the CAT converters as they are not needed to pass the inspection.... Did have them removed. The next day the truck would not get up to 35mph and the check engine light came on... I limped back to the shop and told him to put new converters on. That solved that problem.... I don't know why it made a difference but I thought it would be best to have new CATS with new Magnaflow Mufflers.

never had that problem with any cat I have removed or gutted, my 87 has no cats and true duals runs fine.
 

Craig S

Junior Member
Joined
Jun 2, 2017
Posts
13
Reaction score
0
Location
Stamford, CT
First Name
Craig
Truck Year
1987
Truck Model
V10
Engine Size
5.7 350
I ordered a kit from Flowtech that was designed for the 350 with 4wd. It's 16 gauge steel with mandrel bends, the instructions sucked and it took almost all day to install it since I was working on the driveway. I used the clamps it came with, I want to get it welded together eventually, overall Im really happy with the way it came out. For only spending $150 you wont find a better system.
 

4WDKC

Full Access Member
Joined
Jan 27, 2016
Posts
2,366
Reaction score
1,090
Location
Southern Florida
First Name
Kacy
Truck Year
1987
Truck Model
V10
Engine Size
350
I ordered a kit from Flowtech that was designed for the 350 with 4wd. It's 16 gauge steel with mandrel bends, the instructions sucked and it took almost all day to install it since I was working on the driveway. I used the clamps it came with, I want to get it welded together eventually, overall Im really happy with the way it came out. For only spending $150 you wont find a better system.

If you weld alumunized pipe it will rust be careful.
 

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