Stock Mach 1 Drivetrain - what will it handle? - Ford Mustang Forum
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post #1 of 4 (permalink) Old 07-21-2010 Thread Starter
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Stock Mach 1 Drivetrain - what will it handle?

I am interested go find out what HP and Torque increase can be managed safely with a stock 2003 Mach 1 drivetrain. Any testcase scenarios (Good or Bad) would be much appreciated.
The current setup is producing around 350HP with the Cold Air, Diablo tune and balls out exhaust. i want to get this to around 500HP without messing with the drivetrain too much. if a major beef up is required i might aswell go for 600+ HP. again any past problems or current success stories would be well recieved.

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post #2 of 4 (permalink) Old 07-21-2010
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The 5-speed in the '03 Mach 1 is a TR-3650 and is only rated at 360ft/lbs. If you push your upgrades to the 450+ range, you will be putting the transmission in danger of failure.

In all fairness, it all depends on how you drive it. Horsepower does not kill transmissions, shock-load does. Shock-load is the sudden "jolt" of torque that goes through a driveline and can be catastrophic.

I can't tell you how many times I have seen people (myself included) spend so much time and money adding power to the motor and ignoring the transmission, just expecting whatever they do to the motor, the transmission will handle it. That couldn't be further from the truth. All the power in the world is not worth squat if you can't get it to the ground.

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post #3 of 4 (permalink) Old 07-21-2010
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Your block will handle over 750 hp, the crank is good to about 500hp, its rods you need 2 check, as some have forged and some r cast...

2002 ROUSH Stage 2, set up for SCCA/Autocross. ROUSH 13" brakes,ROUSH 37mm front sway, ROUSH upper & lower arms, Vogtland coil springs w/ isolators removed, ROUSH CAI, 275/40/17's on 17x9 Bullitt rims on all corners, Hawk brake pads, Tokico D-spec struts n shocks, adjustable rear sway bar, Steeda f&r strut/shock tower brace, bumpsteer kit, J&M C/C plates, sub-frame connectors....
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post #4 of 4 (permalink) Old 07-21-2010
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The drive line is the same as a 02 and up GT, if the Mach is a 5 speed then you already have a forged crank, its good for more the 500hp, if its an auto then around 500 is right.

Pistons and rods are pretty much a must for 600HP. Axles and Diff too. But like said above, its how you drive it. You can do a Magnum T56 swap or a TKO600, them trannys can hold a bunch.

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6 speed gear jammer, thats all!
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