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View Full Version : Dyno Graph - Marauder Powered Factory Five Cobra


tad240
05-12-2011, 07:20 PM
Took my Marauder engined Factory Five Cobra to Fastlane Motorsports in Benson, NC last week and got a custom dyno tune. Car was originally running rich, especially at idle, and for some odd reason the rev limiter was set at 5000 rpm. Often felt like it was going to choke off when coming to a stop sign. And that 5000 rpm rev limit was driving me crazy. Just when it was starting to run strong it would hit the limiter and just go flat.

I was really impressed with the guys at Fastlane. They really seemed to know their stuff and have logged thousands of dyno runs - primarily with the 4.6 engines.

The max power shown at the top of the graph is overstated due to the blip and surge when he shutdown the run around 6200 but nevertheless, I'm very satisfied with the results. Looks to be around a solid 310 at the rear wheels.

It runs so much better now across the board from idle to 6000+. Really pulls strong to and past 6000. They set the new rev limit at 6500. The overall improvement just has me smiling - really a much more enjoyable car now!

For the record, I'm running a stock 4.6 dohc from a Mercury Marauder, long tubes from FFR, and a 90mm MAF with a T45 5 speed and 3.55 gears.

http://i431.photobucket.com/albums/qq34/tad240/image0.jpg

http://i431.photobucket.com/albums/qq34/tad240/Cobrartfrt.jpg
LANDY
05-12-2011, 07:23 PM
She is a beauty forsure.
MOTOWN
05-12-2011, 07:23 PM
sweeeeet!!!!!!!!
ImpalaSlayer
05-12-2011, 07:23 PM
i think its time for a eaton swap on that baby! that thing is awesome
-Matt-
05-12-2011, 07:32 PM
Trade for a 500hp Marauder? lol
justbob
05-12-2011, 07:43 PM
I remember this car! Where's the pics you posted a long time ago showing the frame and the headers weaving around it? That was SICK!
tad240
05-12-2011, 07:58 PM
I remember this car! Where's the pics you posted a long time ago showing the frame and the headers weaving around it? That was SICK!

Here is the link to my original thread:
http://mercurymarauder.net/forums/showthread.php?t=49935
MM03MOK
05-12-2011, 08:04 PM
Nice! FFR is just 30 minutes from us! Dave Smith gave us a tour last Fall. Impressive operations and amazing cars!
ctrlraven
05-12-2011, 08:05 PM
That's awesome!
MMarauder03
05-12-2011, 09:21 PM
Me likey! :burnout:
Gryphonzus
05-13-2011, 01:12 AM
Looks great! Glad they got it running good for you.
Paul T. Casey
05-13-2011, 04:18 AM
Love your torque curve!
fastblackmerc
05-13-2011, 05:37 AM
Where in NC are you. Need to come to some of the meets we attend.
tad240
05-13-2011, 07:32 AM
Where in NC are you. Need to come to some of the meets we attend.

Would love to attend. I live just north of Rocky Mount on I-95 but work just outside of Raleigh in Clayton.

Keep me posted on some of your meets and I'll definitely try to join you.
fastblackmerc
05-13-2011, 07:36 AM
Would love to attend. I live just north of Rocky Mount on I-95 but work just outside of Raleigh in Clayton.

Keep me posted on some of your meets and I'll definitely try to join you.

I live in Cary.

I've been thinking of get a dyno tune at Fastlane.