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Headers for a 512B build
#2136731
08/19/16 05:27 PM
08/19/16 05:27 PM
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Joined: Jan 2005
Posts: 4,418 Michigan
MarkZ
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Worthy
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OP
Worthy
Joined: Jan 2005
Posts: 4,418
Michigan
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I've got a 400 at the engine builders getting done up with a 440 Source rotating assembly and I've come to the point where I need to start ordering all the bolt on parts. The motor is going into my Fifth Avenue (an M body) and I didn't anticipate there being large tube headers that would fit, so I'm looking at shorty headers, but can't find any that are swept back to clear the gear box that have at least 1 3/4" primaries and a 3" collector. Everything I can find only have a 2 1/2" collector. Do they make such a beast?
1987 Fifth Avenue - 512/518/D60
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Re: Headers for a 512B build
[Re: MarkZ]
#2137549
08/20/16 11:49 PM
08/20/16 11:49 PM
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Joined: Jan 2005
Posts: 4,418 Michigan
MarkZ
OP
Worthy
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OP
Worthy
Joined: Jan 2005
Posts: 4,418
Michigan
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Yeah, I was under no delusions that I would find a long tube header that would work. That is why I was hoping something in a shorty for another application would work. I did find these though: https://www.summitracing.com/parts/snh-dd2-p/overview/make/chrysler 1 7/8" primaries and a 3" collector. Anyone ever see these before?
1987 Fifth Avenue - 512/518/D60
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Re: Headers for a 512B build
[Re: MarkZ]
#2137555
08/20/16 11:58 PM
08/20/16 11:58 PM
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Joined: Dec 2004
Posts: 10,554 Rittman Ohio
fourgearsavoy
I Live Here
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I Live Here
Joined: Dec 2004
Posts: 10,554
Rittman Ohio
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It would be nice to see a picture of the actual MOPAR headers. You don't think a Doug's D451 would work? Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
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Re: Headers for a 512B build
[Re: 65Fury440]
#2137798
08/21/16 12:25 PM
08/21/16 12:25 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Those flanges don't give a warm fuzzy, sealing feeling.
Or a warm fuzzy bolting to the head feeling
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Headers for a 512B build
[Re: Supercuda]
#2138879
08/22/16 08:47 PM
08/22/16 08:47 PM
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Joined: Jan 2005
Posts: 4,418 Michigan
MarkZ
OP
Worthy
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OP
Worthy
Joined: Jan 2005
Posts: 4,418
Michigan
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Yeah, no fuzzy feeling here either... Looking at the engine again I think actual block huggers might fit. My car has the smaller Borgeson gear box in it. I know it's a smallblock pictured, but what do you guys think?
Last edited by MarkM; 08/22/16 09:03 PM.
1987 Fifth Avenue - 512/518/D60
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Re: Headers for a 512B build
[Re: MarkZ]
#2138960
08/22/16 10:30 PM
08/22/16 10:30 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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My understanding of the block huggers is that the dump right above the centerlink and some very tight and cramped plumbing is needed to clear it.
Hedman makes a midlength header that looks similar to the block hugger above but the collector angles back, pn 78070 is one. Problem is while it has 1 3/4" tubes the collector is 2 1/2".
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Headers for a 512B build
[Re: beecrazy]
#2139266
08/23/16 01:07 PM
08/23/16 01:07 PM
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Joined: Jan 2005
Posts: 4,418 Michigan
MarkZ
OP
Worthy
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OP
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Joined: Jan 2005
Posts: 4,418
Michigan
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Do you think this style will work 1 3/4" primary 3" collector.
The top one is Hooker super comp the bottom "black one" is swept back design.
Kevin I don't think they will. Looks like the steering link will interfere. A-body small block headers will clear:
1987 Fifth Avenue - 512/518/D60
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