I have an 86 mustang with a vortech a trim, trickflow intake, msd,373s, 2 1/2 inch exhaust with headers,cats and flowmasters,this car has the stock engine and has been running mid 13s for years with no traction(locker doesn't work)I just bought a gt-40 crate motor and i am wondering if i should save some more cash and do the tranny and axels at the same time rather than just waiting till every thing breaks, I am guessing i should have around 450 flywheel HP with my new motor and my blower. AM i goin to break everything the fist week i have it out or what?
am i going to break my driveline?
- Thread starter stangfreak861
- Start date
93gtmustang
10 Year Member
- Oct 21, 2006
- 515
- 43
- 49
You should think about going to 31 or 33 spline axles, a heavy duty posi unit or rebuild the traction lock which wouldn't last as long but cheaper for the kit, about $50.00, and heavy duty upper and lower control arms, and eventually a upgraded T-5, TKO, or C-4 racing automatic.
For now , if you are easy on it, keep your rpms low when you launch, and don't run slicks, you should be ok.
It's all how hard you are on it.
I have GT-40 crate in my 93 GT Mustang with no power adder, 345hp at the flywheel. I launch at 4000rpms with Hoosier Quick Time Pros and run 13.3.
Here's my set-up below.
Good luck!
1993 GT Mustang / Ford Racing GT-40 Crate Motor B-303 Cam / 24 lb. Injectors / Stock Ignition / MSD EFI Blaster Coil / Edelbrock 5.0 Upper and Lower Intake with BBK Phelonic Spacer / Professional Products 70mm Throttle Body / C&L C.A.I. w/76mm MAF / Stock Air Box w/K&N Panel Filter / Holley Adjustable Fuel Pressure Regulator / Electric Fan / BBK Underdrive Pulley's / A.C. Removed / BBK Short Headers / Flowmaster Exhaust / Tremec T-5Z / B&M Short Throw Shifter / Alum. Driveshaft / 3.73 Gears / Eaton H.D. Posi / Moser 31 Spline Axles/ Subframe Connectors / Line Lock / Driveshaft Loop / B&M Short Throw Shifter / Racing Upper and Lower Control Arms / Lakewood Adjustable Drag Shocks/ Holley 190 lph Fuel Pump /
For now , if you are easy on it, keep your rpms low when you launch, and don't run slicks, you should be ok.
It's all how hard you are on it.
I have GT-40 crate in my 93 GT Mustang with no power adder, 345hp at the flywheel. I launch at 4000rpms with Hoosier Quick Time Pros and run 13.3.
Here's my set-up below.
Good luck!
1993 GT Mustang / Ford Racing GT-40 Crate Motor B-303 Cam / 24 lb. Injectors / Stock Ignition / MSD EFI Blaster Coil / Edelbrock 5.0 Upper and Lower Intake with BBK Phelonic Spacer / Professional Products 70mm Throttle Body / C&L C.A.I. w/76mm MAF / Stock Air Box w/K&N Panel Filter / Holley Adjustable Fuel Pressure Regulator / Electric Fan / BBK Underdrive Pulley's / A.C. Removed / BBK Short Headers / Flowmaster Exhaust / Tremec T-5Z / B&M Short Throw Shifter / Alum. Driveshaft / 3.73 Gears / Eaton H.D. Posi / Moser 31 Spline Axles/ Subframe Connectors / Line Lock / Driveshaft Loop / B&M Short Throw Shifter / Racing Upper and Lower Control Arms / Lakewood Adjustable Drag Shocks/ Holley 190 lph Fuel Pump /
maxine-70
20+ Year Stangneter 
if you already plan on replacing the axles and trans anyway, id go ahead and run it until you blow them up. you wouldnt be out anything but a tow bill, and it may last longer than you think.
id rebuild or replace the posi, and use any tranny BUT a c4 or t5 unless you can get them by the truckload. id bet the stock 28 spline axles will hold up just fine.
id rebuild or replace the posi, and use any tranny BUT a c4 or t5 unless you can get them by the truckload. id bet the stock 28 spline axles will hold up just fine.
