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Re: collector size for 468 sbm [Re: 80arrow] #1979260
12/30/15 11:51 AM
12/30/15 11:51 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Originally Posted By 80arrow
Originally Posted By MR_P_BODY
Originally Posted By 80arrow
Originally Posted By 1967dartgt
I am going 2 to 2 1/8 to 2 1/4 with a 4 inch collector on my 422.


Are these something you are building yourself? Or do you have someone lined up to build them?


These are what I built for my 405ci W-9.. three step
1 7/8- 2 -2 1/8
wave


Those look awesome. I'm sure I'll have to make my own headers but figured I'd ask about 1967dartgt's set. I really don't want to make a set for my car, lol.


The one thing you want to TRY for is having equal
length primaries... this s a timing thing for the
exhaust, so they will draw on the overlap at the
proper time(equal length)... but also.. the number
one thing is to get them to FIT in the car so you
do what you have to to make them fit... on a true
merge collector they have to be designed to fit the
engine and RPM.. they are NOT a one size fits all
wave

Re: collector size for 468 sbm [Re: MR_P_BODY] #1979338
12/30/15 02:14 PM
12/30/15 02:14 PM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
master
Leon441  Offline
master

Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Headers on nitrous motors are not important?

Charlie Buck implied they were more important on nitrous engines. Especially those that have limited camshaft core availability when exhaust event timing is very important.

I'm building a new set. Mike, let me know exactly what you need. I think I remember. Will have 6 feet of 4" pipe with X-pipe after collector.

Will guess 2"/2.125"/2.250" 6"/10"/12" on primary length.


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: collector size for 468 sbm [Re: Leon441] #1979557
12/30/15 06:46 PM
12/30/15 06:46 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
Master

Joined: Jun 2003
Posts: 52,972
Romeo MI
Leon... empty out some PMs.. your over limit
wave

Re: collector size for 468 sbm [Re: R3DART] #1979672
12/30/15 08:59 PM
12/30/15 08:59 PM
Joined: Jul 2008
Posts: 1,534
bronx n.y
O
one bad fish Offline
pro stock
one bad fish  Offline
pro stock
O

Joined: Jul 2008
Posts: 1,534
bronx n.y
Am about to change my headers to

Re: collector size for 468 sbm [Re: Leon441] #1979802
12/30/15 11:31 PM
12/30/15 11:31 PM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
master
1967dartgt  Offline
master

Joined: Oct 2007
Posts: 3,978
Hilltown Pa
Originally Posted By Leon441
Headers on nitrous motors are not important?

Charlie Buck implied they were more important on nitrous engines. Especially those that have limited camshaft core availability when exhaust event timing is very important.

I'm building a new set. Mike, let me know exactly what you need. I think I remember. Will have 6 feet of 4" pipe with X-pipe after collector.

Will guess 2"/2.125"/2.250" 6"/10"/12" on primary length.


That was from Ron Rhoades who builds headers for a living and is the fastest sb nos car in x275 in the country. His thinking has gotten his 23° small block to go 7.08 in the quarter letting out at 1000-1100 feet because it's geared for the 1/8. I guess he doesn't know what he is talking about you know more. Lol

Oh yea, he (Ron) built the headers on the fastest bb nos car in the country.

Last edited by 1967dartgt; 12/31/15 02:42 AM.

Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: collector size for 468 sbm [Re: 80arrow] #1979812
12/30/15 11:38 PM
12/30/15 11:38 PM
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt Offline
master
1967dartgt  Offline
master

Joined: Oct 2007
Posts: 3,978
Hilltown Pa
Originally Posted By 80arrow
Originally Posted By 1967dartgt
I am going 2 to 2 1/8 to 2 1/4 with a 4 inch collector on my 422.


Are these something you are building yourself? Or do you have someone lined up to build them?


I have a professional header builder making mine.


Brett Miller W9 cnc'd heads
STR Chassis fabraction
Re: collector size for 468 sbm [Re: R3DART] #1979891
12/31/15 01:02 AM
12/31/15 01:02 AM
Joined: Jul 2008
Posts: 1,534
bronx n.y
O
one bad fish Offline
pro stock
one bad fish  Offline
pro stock
O

Joined: Jul 2008
Posts: 1,534
bronx n.y
Nice

Re: collector size for 468 sbm [Re: MR_P_BODY] #1979986
12/31/15 04:16 AM
12/31/15 04:16 AM
Joined: Feb 2007
Posts: 205
Edmonton Alberta, Canada
R
R3DART Offline OP
enthusiast
R3DART  Offline OP
enthusiast
R

Joined: Feb 2007
Posts: 205
Edmonton Alberta, Canada
Beautiful work Mr P.

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