Re: Exhaust Manifold-Question Big Block
[Re: cornucopia]
#484154
09/30/09 03:14 PM
09/30/09 03:14 PM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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The logs have a 2" outlet and the HP's are 2&1/2" & work even better w 3" mandrel exhaust pipes right up to the 2&1/2" flange. As said different location and the 2" ones would be extremely restrictive on a 440.
live every 24 hour block of time like it's your last day on earth
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Re: Exhaust Manifold-Question Big Block
[Re: CYACOP]
#484155
09/30/09 03:16 PM
09/30/09 03:16 PM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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Yep, lots of differences are there.
The 'clocking' of the outlet flanges varies based on the year of the manifold (meaning, the rotation of the bolt hole pattern), plus on the driverside teh angle of the flange WRT the ground changes a lot (especially on C-body manifolds.
HP manifolds are generally 2 1/2" outlets IIRC and most logs are 2" or 2 1/8", so smaller pipes choke the flow.
Year One used to have some good info on teh flanges in their catalog, might be on their website somewhere.
Don't forget, you need all the sleeve nuts for the HP manifolds also!
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
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Re: Exhaust Manifold-Question Big Block
[Re: CYACOP]
#484158
09/30/09 07:39 PM
09/30/09 07:39 PM
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Joined: Sep 2006
Posts: 1,139
West Tennessee
rbstroker
super stock
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super stock
Joined: Sep 2006
Posts: 1,139
West Tennessee
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The 440 is taller and wider than the 383 also. Think your stock exhaust will still bolt up even with the stock logs? Do yourself a favor. Do it right the first time. It'll be cheaper in the long run.
This is the land of the free
because of the brave
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Re: Exhaust Manifold-Question Big Block
[Re: LimeliteAero]
#484159
10/01/09 09:31 AM
10/01/09 09:31 AM
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Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP
OP
master
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OP
master
Joined: Feb 2005
Posts: 3,958
SW Fla.
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Quote:
why are you swapping the 383 for the 440?
I dont understand the conversion but sticking with the choked down exhaust system?
My 383 is tired, so I pulled a 440 out of a donor C body Im rebuilding and will bolt in. My 17 year old is springing the cash for the project so the cost needs to be spread out over time. We can spend money on the manifolds and exhaust later.
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Re: Exhaust Manifold-Question Big Block
[Re: rbstroker]
#484160
10/01/09 09:33 AM
10/01/09 09:33 AM
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Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP
OP
master
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OP
master
Joined: Feb 2005
Posts: 3,958
SW Fla.
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Quote:
The 440 is taller and wider than the 383 also. Think your stock exhaust will still bolt up even with the stock logs? Do yourself a favor. Do it right the first time. It'll be cheaper in the long run.
Im hoping wthe exhaust will have enough flexibility to mount up to the 440. As explained above cost is an issue all at one time.
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Re: Exhaust Manifold-Question Big Block
[Re: RapidRobert]
#484162
10/01/09 10:29 AM
10/01/09 10:29 AM
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Joined: Dec 2006
Posts: 3,533
Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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This is Moparts. Budgets don't count, we don't care. You must install the parts we choose because this shall become our fantasy project, not yours! And if that 440 is even the slightest bit tired, a stroker crank and alum heads will be debated next, quickly followed by a 440Source hijack debate.   Joking aside, don't worry too much about running logs on a mild 440 - they aren't ideal, but you can still have a strong runner if the 440 is in good health. As mentioned already, if you have an H-pipe setup, better plan on cutting the H when going from 383 to 440. You can probably reseal it with a $13 bandclamp afterward, though.
Parts I seek:
driver doorpanel, 65 Sport Fury, prefer black, needs to be 7-8 on 10 scale, might buy set
16" x 6" Dodge truck wheel(s), from early 70s?, takes 9" dogdish - need for a research job so cheaper is better.
69-73 C-body caliper brackets and/or splashields
Send a PM.
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Re: Exhaust Manifold-Question Big Block
[Re: Fury Fan]
#484163
10/01/09 10:36 AM
10/01/09 10:36 AM
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Joined: Feb 2005
Posts: 3,958
SW Fla.
CYACOP
OP
master
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OP
master
Joined: Feb 2005
Posts: 3,958
SW Fla.
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Quote:
This is Moparts. Budgets don't count, we don't care. You must install the parts we choose because this shall become our fantasy project, not yours!
And if that 440 is even the slightest bit tired, a stroker crank and alum heads will be debated next, quickly followed by a 440Source hijack debate.
Joking aside, don't worry too much about running logs on a mild 440 - they aren't ideal, but you can still have a strong runner if the 440 is in good health.
As mentioned already, if you have an H-pipe setup, better plan on cutting the H when going from 383 to 440. You can probably reseal it with a $13 bandclamp afterward, though.
The car actually has just 2 seperate pipes going all the way to the back, as a matter of fact, I had to clamp strap them together in the center because the offset weight actually rotated one of them at the manifold flange, so I think I have plenty of flexibility to move them around.
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Re: Exhaust Manifold-Question Big Block
[Re: CYACOP]
#484164
10/01/09 11:20 AM
10/01/09 11:20 AM
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Joined: Jan 2003
Posts: 75,037
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,037
U.S.S.A.
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Quote:
Quote:
This is Moparts. Budgets don't count, we don't care. You must install the parts we choose because this shall become our fantasy project, not yours!
And if that 440 is even the slightest bit tired, a stroker crank and alum heads will be debated next, quickly followed by a 440Source hijack debate.
Joking aside, don't worry too much about running logs on a mild 440 - they aren't ideal, but you can still have a strong runner if the 440 is in good health.
As mentioned already, if you have an H-pipe setup, better plan on cutting the H when going from 383 to 440. You can probably reseal it with a $13 bandclamp afterward, though.
The car actually has just 2 seperate pipes going all the way to the back, as a matter of fact, I had to clamp strap them together in the center because the offset weight actually rotated one of them at the manifold flange, so I think I have plenty of flexibility to move them around.
No problem there , as long as it's not a Y pipe you'll have no issue bolting it to the 440 .
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Re: Exhaust Manifold-Question Big Block
[Re: Fury Fan]
#484165
10/01/09 11:20 AM
10/01/09 11:20 AM
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Joined: Jan 2003
Posts: 75,037
U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,037
U.S.S.A.
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Quote:
This is Moparts. Budgets don't count, we don't care. You must install the parts we choose because this shall become our fantasy project, not yours!
And if that 440 is even the slightest bit tired, a stroker crank and alum heads will be debated next, quickly followed by a 440Source hijack debate.
Joking aside, don't worry too much about running logs on a mild 440 - they aren't ideal, but you can still have a strong runner if the 440 is in good health.
As mentioned already, if you have an H-pipe setup, better plan on cutting the H when going from 383 to 440. You can probably reseal it with a $13 bandclamp afterward, though.
truer words have not been posted
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