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What size headers tubes on your B1 combo's
#1741816
01/29/15 07:45 PM
01/29/15 07:45 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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B1 heads only please but I am soon going to be having a set of headers made for my B1 headed 572. Probably going to be a stepped header type design but what are you guys running. This will be for a nitrous combo. Thanks
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: What size headers tubes on your B1 combo's
[Re: pittsburghracer]
#1741818
01/29/15 08:18 PM
01/29/15 08:18 PM
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Joined: Jan 2003
Posts: 19,361
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,361
Las Vegas
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My 525 junker is 2 1/4 to 2 3/8 with a collector muffler.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: What size headers tubes on your B1 combo's
[Re: pittsburghracer]
#1741821
01/29/15 08:59 PM
01/29/15 08:59 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
B1 heads only please but I am soon going to be having a set of headers made for my B1 headed 572. Probably going to be a stepped header type design but what are you guys running. This will be for a nitrous combo. Thanks
Max RPM is also part of the equation and the amount
your gonna hit it with.. if I were home I could run
your engine through my header program to tell you
what you need.... but I cant.. its on my other puter
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Re: What size headers tubes on your B1 combo's
[Re: a493demon]
#1741823
01/29/15 09:25 PM
01/29/15 09:25 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
http://www.wallaceracing.com/header_length.php
I wouldnt base my headers on that.. it has a good
bit of the info needed but it sure doesnt ask all
of the data needed... I've been using the header max
program for years and have tested it on the dyno
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Re: What size headers tubes on your B1 combo's
[Re: MR_P_BODY]
#1741824
01/29/15 09:53 PM
01/29/15 09:53 PM
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Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
Dartsport540
top fuel
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top fuel
Joined: Oct 2005
Posts: 1,646
Ringtown, Pa.
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505 cu. in. with stainless step headers, 2" - 2-1/8" to 2-1/4" . Merge collectors. Shift at 6100, and cross the traps at 6700rpm.
548 cu. in., Bill Mitchell Aluminum Block, CRT 727 auto trans, Alston Chassis. 8.981et at 149.46 mph. 1.204et - 60 foot, So Far....
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Re: What size headers tubes on your B1 combo's *DELETED*
[Re: dvw]
#1741831
01/30/15 05:15 PM
01/30/15 05:15 PM
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Joined: Jan 2003
Posts: 16,923
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,923
NC
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Re: What size headers tubes on your B1 combo's
[Re: 440Jim]
#1741832
01/30/15 05:28 PM
01/30/15 05:28 PM
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Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
bigtimeauto
Trophy Winner
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Trophy Winner
Joined: Jun 2007
Posts: 2,646
Plymouth Meeting, PA
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i run 2.25 on my dart. i went from tti 1.125 on my engine without the blower and with and it didn't see anything on the chassis dyno
BB, TT5,Procharged 3300lb Street Car 4.79/154
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Re: What size headers tubes on your B1 combo's
[Re: dvw]
#1741833
01/30/15 05:32 PM
01/30/15 05:32 PM
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Joined: Jan 2003
Posts: 16,923
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,923
NC
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Quote:
Though not a B-1 Chuck from best did a header test a while back and posted it. I believe it was an 572 -1. The smaller 2 1/8" were better until the very end of the range like 6000-6500
Doug
I think I found it with the search:
https://board.moparts.org/ubbthreads/show...rue#Post8275911
572 Wedge, 440-1 345CNC Bracket Engine. Dyno Results
Indy Alum Block
Indy 440-1 345CNC Heads
Indy 440-3X Intake
Quick Fuel 2.125 4500 Carb Re done by Bob Book
HVH 2” Spacer
T&D Single Shaft Rockers 1.6 / 1.6
BMBBR5 Roller Cam 283 on a 115
Jesel Belt Drive
Race Tec Pistons 15 to 1 .043/.043
758 tq at 5700, 939 hp at 7400, TTI Headers 2.125 x 3.5
728 tq at 5900, 946 hp at 7100, 2.125 to 2.375 to 2.500 with a 5" collector
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Re: What size headers tubes on your B1 combo's
[Re: Al_Alguire]
#1741835
01/31/15 12:33 AM
01/31/15 12:33 AM
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Joined: Apr 2007
Posts: 289
Lowes
steve660
enthusiast
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enthusiast
Joined: Apr 2007
Posts: 289
Lowes
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Interesting post. Im having 622 with PSO heads built and will need headers. It is a pump gas engine with shift points around 7000ish in a 72 Barracuda. Have been told TTI 2"-2 1/8" step with 3 1/2 collector will be enough. Im kinda skeptical about them. If need be ill have custom ones made.
PSO headed 632 from MM. Cracked cylinder, loose valve seats, low oil pressure, low cylinder pressure.
..... Now its a door stop....
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Re: What size headers tubes on your B1 combo's
[Re: steve660]
#1741836
01/31/15 02:57 AM
01/31/15 02:57 AM
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Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340
master
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master
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
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Quote:
Interesting post. Im having 622 with PSO heads built and will need headers. It is a pump gas engine with shift points around 7000ish in a 72 Barracuda. Have been told TTI 2"-2 1/8" step with 3 1/2 collector will e enough. Im kinda skeptical about them. If need be ill have custom ones made.
Exactly what my sb w9 headers are.
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Re: What size headers tubes on your B1 combo's
[Re: RAMM]
#1741838
01/31/15 02:13 PM
01/31/15 02:13 PM
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Joined: Aug 2008
Posts: 4,066
Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,066
Mo.
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Quote:
Quote:
I did 2.375" on my Coronet years ago and would never do it again . I don't care what some calculator says , it has to fit in car.A 2.25" would work just as good and it is way easier to buy and find in stainless or carbon . The B1 is only a 1.78" valve so its not fooling anybody by putting a macho pipe in it.
This is good advice ^^^^^. I would also advise against anything bigger than a 4" collector. J.Rob
It does make a lot of sense 
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Re: What size headers tubes on your B1 combo's
[Re: pittsburghracer]
#1741839
01/31/15 02:13 PM
01/31/15 02:13 PM
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Joined: Jan 2010
Posts: 803
Idabel,Oklahoma
Gary Robbins
super stock
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super stock
Joined: Jan 2010
Posts: 803
Idabel,Oklahoma
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Quote:
B1 heads only please but I am soon going to be having a set of headers made for my B1 headed 572. Probably going to be a stepped header type design but what are you guys running. This will be for a nitrous combo. Thanks
John,
Mines 2 1/2" with 5" collectors...Not saying you need this size,but know one has been faster with B1 originals than us with our/your type car...Your gonna have more torque than you can use at the start and can use all the HP it can make out the back door !!
Just sayin !!
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Re: What size headers tubes on your B1 combo's
[Re: Gary Robbins]
#1741841
01/31/15 05:51 PM
01/31/15 05:51 PM
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Joined: Mar 2006
Posts: 9,827
MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,827
MI, usa
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Quote:
Quote:
B1 heads only please but I am soon going to be having a set of headers made for my B1 headed 572. Probably going to be a stepped header type design but what are you guys running. This will be for a nitrous combo. Thanks
John,
Mines 2 1/2" with 5" collectors...Not saying you need this size,but know one has been faster with B1 originals than us with our/your type car...Your gonna have more torque than you can use at the start and can use all the HP it can make out the back door !!
Just sayin !!
For your type of car Gary makes a very good argument. If you have to pull power anyway you might as well gain it on the top. I was thinking slow tanks like mine that need the torque.
Doug
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