Heater core replacement

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jwright

Junior Member
Joined
Sep 21, 2024
Posts
1
Reaction score
0
Location
st helena sc
First Name
jim
Truck Year
1978
Truck Model
k20
Engine Size
400
New to me, nice 1978 Scottsdale k20 4x4, heater core was leaking, got the new one in but the old insulation material is trashed from the year, rodents and antifreeze, was thinking of using dynamite to insulate before going back with heater housing, would this be an issue with fitment? Old stuff so thick dynamite obviously isn't, any comments or advice. If I didn't have to disassemble the dash I would replace with original firewall insulation, don't wanna go that deep.
 

ali_c20

Full Access Member
Joined
Sep 20, 2016
Posts
1,233
Reaction score
1,743
Location
Austria
First Name
Alexander
Truck Year
1974, 1979
Truck Model
C20, K5
Engine Size
350, 350
Welcome. I think you're good with dynamite.
 

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