8.1l Headers

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Gilderbeast

Full Access Member
Joined
Jun 13, 2019
Posts
113
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77
Location
Fargo, ND
First Name
Brett
Truck Year
1980
Truck Model
K3500
Engine Size
496
What longtube headers fit for the 8.1l/4l85E/NP241 swap in our trucks? I have a 80 K30 with 4" lift.
 

bucket

Super Moderator
Staff member
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Aug 3, 2010
Posts
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Location
Usually not in Ohio
First Name
Andy
Truck Year
'77, '78, '79, '84, '88
Truck Model
K5 thru K30
Engine Size
350-454
It's my understanding that standard big block headers fit.
 

ericeggli

Junior Member
Joined
Nov 28, 2019
Posts
1
Reaction score
0
Location
Alberta
First Name
Eric
Truck Year
1978
Truck Model
3+3 K30
Engine Size
8.1L
I have standard big block headers from a 454 on my 8.1 swap, required a small amount of heating/bending to clear frame rails
 

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