Join Date: Jun 2006
Location: Los Alamitos, CA
Common failures on 4.6L? What (commonly) kills these motors?
What are issues that 4.6's commonly have? The 3.8L SCs I'm coming from blow headgaskets like no tomorrow.
Do the 4.6L's have any chronic problems?
I think that the 4.6's are a much tougher motor than the 3.8 since they stand up to Police Interceptor, Ambulance and truck use, but please correct me if I am wrong.
If left alone (IE no power-adders) how long do 4.6's typically last, and at what RPM should my maximum shift point be to prevent motor death?
I've lost several motors to headgaskets now, and I lost my SC to a snapped crankshaft.
Are there any failures that these tend to suffer from? The OHC heads look pretty easy to change if the headgaskets went, so thats not that big of a deal, but what should I be aware of?
Sorry for the redundancy.
Also, can a tbird with 175k still make a run down the 1/4, or handle an occasional autoX if the car isn't pushed hard the rest of the time, and will going WOT off of stoplights or during freeway merges hurt a 4.6L with as many miles as the one I'm buying has? (not my questions, my girlfriend's convinced that if there is a way for it to blow up, it'll blow up on me if I do anything besides grandma-style driving.)
Also, if you know someone that's good at breaking curses or can remove the hex or whatever from me that's given me such bad luck with cars, I'd appreciate it. :P
96 Laser Red 4.6L - Custom
Custom Nascar-Inspired Bodykit - 55* Rear Spoiler - J-modded Trans - 80mm MAF - One-Off Diablosport Chipmaster Revolution Chip/Tune W/Toggle - ScanGaugeII Diagnostics & Data Readout - PBR Brakes - Drilled/Slotted Rotors - SC Wheels & Springs - Falken Tires - KYB GR-1 Shocks/Struts - FSTB - RSTB - RTLB - LECB - 60/40 Split Rear - SC Seats - SC Vac/Boost Gauge