I was thinking about getting the flowmaster 40 series muffler installed onto my truck. I know that it'll reduce low end torque, so I was thinking about having 4.10 gears to compensate.

Can anyone give me some feedback on this combo? Thanks

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Currently:
1999 Black F150, 4.6L 5spd manual, reg. cab, long bed, 3.55, 60/40 split bench cloth seats, black vinyl floor, K&N air filter with partial open box mod., Home Made Cold Air Intake, 10 disc sony cd changer, Wet Okole seat covers, Superchip, 285/60/16 tires, Seat belt cushions, modified the silencer (by removing it, duct-tapped the hole from the outside, and put it back in.)

Future:
4.10 gear, bug deflector, fender flares, hard tonneau cover, roll pan, ProCharger Supercharger, shaved tailgate handle, and custom paint & striping.

 

If you are replacing your muffler only, and not increasing the 2.5" exhaust pipes, you should not loose alot of low end torque/power. FM 40's will give alot of sound, and should increase top rpm performance substantially. The gear change you mentioned will give a much quicker truck either way, but gets into more serious dough.

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2000 F-150 XL,RC,LB,5.4,4R70W,3.55LS,
4-wheel disc/ABS,Chestnut/Parchment,
Ford bedliner & gas/wheel/spare locks,
3" cold air box modification,Superchip,
Dynomax ultra-flow welded 3" cat-back.