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Third Gens F-body Part Failures. Here's what's gonna break and when

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Old Feb 21, 2013 | 08:58 PM
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Third Gens F-body Part Failures. Here's what's gonna break and when

I just noticed this article on Hot Rod about Fifth Gen Camaro's. http://www.hotrod.com/techarticles/g...e/viewall.html

I know they did one for the new Mustangs too, but since our cars are too old, I thought we would do a write up for our own board. Here's what I've can think of off the top of my head (assuming a "new" from the factory car

Engine:
-Rods break at 6500 RPM (Doesn't matter if it's L98, LB9, or whatever, rods tend to break around this RPM level. Sometimes as low as 6000 RPM)
-Stock springs valve float around 5500 RPM (Not sure if anyone else experienced this, but mine sure did on an LB9)
-Stock rods without ARP bolts break around 350 HP. (Even with ARP bolts, they still snapped around 6200-6500 RPM)
-Stock cast pistons should be limited to one horsepower per cubic inch.
-Stock intake doesn't "fail" per se. It just stops breathing around 5500 RPM.
-Tune required usually with Speed Density Systems and at about 10% more HP for MAF systems.

Fuel:
-LB9 requires larger injectors past 240HP at stock 43.5 PSI
-L98 requires larger injectors past 280HP at stock 43.5 PSI

Transmission:
-Stock T-5 breaks between 2nd-3rd gear or 3rd gear to 4th gear if you don't shift properly or power shift it and you have more than 350 ft. lbs. of torque. (Some have reported breaking this transmission even with the stock 290 ft. lbs.)

Rear end:
-Stock BW australian 9 bolt rated for 450 ft. lbs of torque. Breakage reported commonly around 500 ft. lbs.

Please feel free to add to this.
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