flowmaster 4-2-1 ?

rod · 01-29-2010, 12:59 PM

in the search for more low end from my under powered over weighted car, i am wondering about a set of flowmaster 4 into 2 into 1 collectors.
the original collectors are 8" x 2 3/4 ID. the flowmasters are;
effective length 22", 2" of 1 5/8", 11" of intermediate and 11 1/2" of 2 5/8".
my current RPM range is 5200-7000. cam is 240/250 @ 50
thoughts?
thanks rod

mannymen · 01-29-2010, 03:02 PM

Tested the Flowmasters and found a little more low end torque and a HP loss on a 427 cu in BBC. The torque increase was way out of my operating range, so no gain for me.

Tom Goldman · 01-29-2010, 06:09 PM

I'll bet there are more of those collectors under benches or hanging on wall, than are still on cars! ....mine included. .......Tom

Mark Yacavone · 01-29-2010, 07:19 PM

They worked on my 350 Buick and 400 Pontiac. Both long stroke, low RPM motors.

Alan Roehrich · 01-29-2010, 08:26 PM

Quote:

Originally Posted by rod

in the search for more low end from my under powered over weighted car, i am wondering about a set of flowmaster 4 into 2 into 1 collectors.
the original collectors are 8" x 2 3/4 ID. the flowmasters are;
effective length 22", 2" of 1 5/8", 11" of intermediate and 11 1/2" of 2 5/8".
my current RPM range is 5200-7000. cam is 240/250 @ 50
thoughts?
thanks rod

My thoughts are that your cam is likely too small for your operating range. And collectors won't help you much, if any.

Dave1695 · 02-03-2010, 12:29 PM

I would like to try a set of 4-2-1 collectors on my stocker, anyone looking to sell a pair for 1 3/4 inch tube headers?

Alan Roehrich · 02-03-2010, 06:56 PM

Quote:

Originally Posted by Dave1695

I would like to try a set of 4-2-1 collectors on my stocker, anyone looking to sell a pair for 1 3/4 inch tube headers?

Dave,
I have a pair I made up for Kevin Cradduck's G/S 255/350 Camaro I drove in 2008. They're in Kevin's garage, they actually have a merge I built on them, and they were on a set of Stahl headers. I may be able to get you a picture of them. I can't even remember what I paid for the pieces.

Dave1695 · 02-04-2010, 12:37 PM

Alan If you call me (800-448-7722 ext 120) I will give you my personel e-mail address!

Alan Roehrich · 02-04-2010, 07:57 PM

Dave,
Sent you a private message. We'll work something out.

CrateCamaro · 02-12-2010, 02:24 AM

http://toronto.kijiji.ca/c-cars-vehi...AdIdZ180688060

Its in canada but I shipped a set of super comps very far and it was cheap. Hope this helps. I have flowmaster collectors and I love the sound they make. I have never tested them against anything else because this header/collector game for .05 sec gain isnt worth it for me. The collector has nothing to do with the christmas tree.

01-29-2010, 12:59 PM	#1
rod Member Join Date: Dec 2009 Location: Kingman, NW AZ. in the middle of the longest stretch of Route 66 Posts: 307 Likes: 0 Liked 17 Times in 13 Posts	flowmaster 4-2-1 ? in the search for more low end from my under powered over weighted car, i am wondering about a set of flowmaster 4 into 2 into 1 collectors. the original collectors are 8" x 2 3/4 ID. the flowmasters are; effective length 22", 2" of 1 5/8", 11" of intermediate and 11 1/2" of 2 5/8". my current RPM range is 5200-7000. cam is 240/250 @ 50 thoughts? thanks rod

01-29-2010, 03:02 PM	#2
mannymen Senior Member Join Date: Apr 2003 Posts: 728 Likes: 4 Liked 13 Times in 7 Posts	Re: flowmaster 4-2-1 ? Tested the Flowmasters and found a little more low end torque and a HP loss on a 427 cu in BBC. The torque increase was way out of my operating range, so no gain for me. __________________ N/A

01-29-2010, 06:09 PM	#3
Tom Goldman VIP Member Join Date: Jan 2003 Location: Allentown,PA Posts: 2,436 Likes: 776 Liked 700 Times in 204 Posts	Re: flowmaster 4-2-1 ? I'll bet there are more of those collectors under benches or hanging on wall, than are still on cars! ....mine included. .......Tom __________________ Tom Goldman 1500 SG , 1506 STK

01-29-2010, 07:19 PM	#4
Mark Yacavone Veteran Member Join Date: Mar 2002 Location: Miles From Nowhere Posts: 7,417 Likes: 2,582 Liked 4,453 Times in 1,694 Posts	Re: flowmaster 4-2-1 ? They worked on my 350 Buick and 400 Pontiac. Both long stroke, low RPM motors. __________________ We are lucky we don't get as much Government as we pay for..... Will Rogers

02-03-2010, 12:29 PM	#6
Dave1695 Member Join Date: May 2009 Posts: 160 Likes: 0 Liked 15 Times in 11 Posts	Re: flowmaster 4-2-1 ? I would like to try a set of 4-2-1 collectors on my stocker, anyone looking to sell a pair for 1 3/4 inch tube headers?

02-04-2010, 12:37 PM	#8
Dave1695 Member Join Date: May 2009 Posts: 160 Likes: 0 Liked 15 Times in 11 Posts	Re: flowmaster 4-2-1 ? Alan If you call me (800-448-7722 ext 120) I will give you my personel e-mail address!

02-04-2010, 07:57 PM	#9
Alan Roehrich VIP Member Join Date: May 2006 Location: Murfreesboro TN Posts: 4,915 Likes: 996 Liked 1,043 Times in 274 Posts	Re: flowmaster 4-2-1 ? Dave, Sent you a private message. We'll work something out. __________________ Alan Roehrich 212A G/S

02-12-2010, 02:24 AM	#10
CrateCamaro Member Join Date: Nov 2007 Location: Ontario Canada Posts: 411 Likes: 1 Liked 19 Times in 7 Posts	Re: flowmaster 4-2-1 ? http://toronto.kijiji.ca/c-cars-vehi...AdIdZ180688060 Its in canada but I shipped a set of super comps very far and it was cheap. Hope this helps. I have flowmaster collectors and I love the sound they make. I have never tested them against anything else because this header/collector game for .05 sec gain isnt worth it for me. The collector has nothing to do with the christmas tree. __________________ Tony Valerio 1968 Camaro 1700 IHRA H/CM 1701 NHRA SS/?A