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#1 |
Active Member
![]() Join Date: Apr 2017
Location: Portland, Oregon
Posts: 186
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Exhaust Manifold Recommendations - 1972 GMC K1500
Looking for recommendations for exhaust manifolds for my 72, dad and I pulled the motor for a rebuild and one of the stock ones had a major crack so I'm looking to upgrade a little bit.
I've been looking at the ram horn style center dumps but was curious what members thought and if my options were limited because the truck is a 4x4. Thanks! edit: Looks like my picture uploaded sideways again but there she is last year after a fresh brush on clear coat - good from 20 feet! |
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#2 |
Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,721
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Re: Exhaust Manifold Recommendations - 1972 GMC K1500
The smaller 2” exit center dumps were factory on the K1500. I would encourage a set of the reproduction Corvette 2 1/2” outlet manifolds.
On a mild motor, they make power equal to a set of 1 5/8” headers IME. And come with none of the hassles. I used two passenger side manifolds from a 64-65 ‘vette if I remember and I cut the generator mount off.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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#3 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Exhaust Manifold Recommendations - 1972 GMC K1500
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#4 | |
Senior Member
![]() Join Date: Nov 2013
Location: East Tennessee
Posts: 2,152
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Re: Exhaust Manifold Recommendations - 1972 GMC K1500
Quote:
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1967 C10 Step side 1968 C10 Step side 1970 Chevrolet K/5 Blazer 1972 Chevrolet K/5 Blazer ............. ![]() |
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#5 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Exhaust Manifold Recommendations - 1972 GMC K1500
I'm using the chrome 2 1/2" rams
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__________________
![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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