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 Post subject: Has anyone used Flowmaster Pulse Tech Scavenger Collectors?
PostPosted: Mon Nov 09, 2009 7:54 pm 
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Joined: Mon Nov 09, 2009 7:45 pm
Posts: 3
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I've got a '69 Malibu, +.040 400 SBC, 9:1, Comp XE 268 cam, Edel RPM with a Q-Jet, stock replacement Pro-Action heads with stage II porting by Mike (2002 vintage), Hooker 1 5/8" headers, T-350 with stock convertor, 3:31 rear gear. The car weighs (according to the scales at the local movers) 3,700 lbs, 3,900 with me on-board. Nothing fancy and nothing newer than about 2005. Thru the exhaust, the car with 26" drag radials will go 13.25 @ 102.5.

Funds are limited but for next year I'm think about adding a set of Flowmaster "Pulse Tech Scavenger Collectors" - basically a replacement collector that reduces 4 pipes to 2 into a collector that is 2 3/4" instead of the 3" on my Hookers. Concept is more torque and a bit more power - my motor is pretty much all done by 5,000 but really strong down low.

Anybody used these and what were your results? Might also think about a 2,000 or 2,200 converter, either alone or with the Flowmaster collectors.

Thansk in advance for any information or ideas you might have.

Mark


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 Post subject: Re: Has anyone used Flowmaster Pulse Tech Scavenger Collectors?
PostPosted: Wed Nov 11, 2009 10:10 pm 
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Joined: Mon Sep 28, 2009 7:47 pm
Posts: 84
Those collectors can expand on the torque curve and make more average power. Not sure if you would make a noticeable gain with them though. I would lean more towards a good X-pipe. I think you would see more from it.


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 Post subject: Re: Has anyone used Flowmaster Pulse Tech Scavenger Collectors?
PostPosted: Fri Nov 13, 2009 9:05 pm 
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Joined: Mon Nov 09, 2009 7:45 pm
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Thanks for the feedback Mike. I'm going to need to do something with the exhaust on the car, as its got some age on it and some leaks. I've thought about an X-pipe - maybe this is the time to do it.

A question - My son tells me that I need a 3" system. I think my combination is too mild for that and that 2 1/2" mandrel pipe will be fine. I'm thinking of an x-pipe to mufflers at the rear axle with turndowns - no tailpipes.

Is there a guideline for determing the optimum tailpipe size for max performance in a mild combo like mine?


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 Post subject: Re: Has anyone used Flowmaster Pulse Tech Scavenger Collectors?
PostPosted: Sun Nov 15, 2009 10:41 am 
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Joined: Mon Sep 28, 2009 7:47 pm
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A 2 1/2" system will work, but there is probably a little power in a 3" system. A good 2 1/2" system will support about 200 HP per side efficiently. A 3" system will go to 350hp per side or so. I'd say in your case there is about a 20 HP bump at peak between the two sizes.


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 Post subject: Re: Has anyone used Flowmaster Pulse Tech Scavenger Collectors?
PostPosted: Sun Nov 15, 2009 9:33 pm 
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Joined: Mon Nov 09, 2009 7:45 pm
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Mike - thanks for taking the time to respond. I'm definately not a high dollar or high power runner, but I have a lot of fun with it and I appreciate getting feedback like this. It's good to know the numbers on a 21/2 vs. 3" system - I'm going to have to take a look at some 3's. Those cylinder heads you prepped for me way back when were without a doubt a good investment!


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