I have just bought this Black Jade Mach One 390 S-Code:http://classiccargallery.com/details.php?id=503&g=1
I would like to make the engine sound to my liking, and for this I have a few questions for you:
I am keen on keeping the car original, so any mods must be reversible, for the sake of resale.
Essentially I'm looking for 2 things from my engine sound:
1) I have always loved the loud bassy throaty rumble of classic dual-chambered Flowmasters
2) I want a "big cam" lumpy hunting idle, which makes the car sound restless, aggressive and belligerent.
This is the kind of lumpy idle I'm looking for:
- Regarding the exhaust, below are photos of the exhaust on a 1969 Mach One 302 that I wanted to model the sound of, because it was PERFECT to me. I note the presence of headers, an H pipe, and particularly small Flowmaster mufflers.
I found these headers:http://www.summitracing.com/parts/HOK-6114-1HKR/?rtype=10
And this Flowmaster exhaust:http://www.summitracing.com/parts/FLO-17281/
- Do these headers and exhaust fit together?
- I note the Flowmaster mufflers are Super 44's. These are considerably bigger than the 302 exhaust I'm trying to copy. How come I can't find an exhaust with those very small Flowmaster mufflers?? :-/
Regarding cams and lifters, I found 3 possible profiles:
(288 duration, 537 lift)
In the video of the blue Mustang (above), the owner says "it is a crane energizer cam it has 520 lift and a 292 duration but crane cam does not make this cam anymore i dont think, i bought this cam a few years ago".
I think I would want b), because I'm looking for a streetable car with a what you might call a "mild race tune", retaining strong torque from 2000rpm (I am willing to sacrifice torque some below 2000 in exchange for getting the lumpy idle I want). I feel that cam a) might sacrifice too much bottom end grunt.
While I'm at it, might uprating the carb + intake manifold yield a large and cost-effective hike in power and torque?Can I expect very noticeable gains, or would you need a timed run to spot the small increase?
I think a dual plane intake would be better for street use than a single plane (but can I still get a lumpy idle with a dual plain??).
Might this be a good carb + intake combo? http://www.summitracing.com/parts/EDL-20374/
What difference can I expect from stock? (in terms of numbers and feel)
Thanks for your comments and input on these various points.