For broad performance improvements:
* Engine Swap: This is often the biggest single performance upgrade. Popular choices include the GM small-block V8 (350 or 383 stroker), or a later model, more fuel-efficient V6. This requires significant work and expense, though.
* Exhaust System: A free-flowing exhaust (headers, high-flow catalytic converter, and a performance muffler) significantly improves breathing and horsepower, especially if combined with other upgrades. This is a relatively affordable upgrade with good results.
* Cold Air Intake: Improves airflow into the engine, giving a noticeable increase in power and throttle response. Again, this is a relatively affordable modification.
If you're on a tighter budget:
* Ignition System Upgrade: A performance ignition coil and wires can significantly improve spark, leading to better combustion and more power. This is a relatively inexpensive upgrade that's worthwhile even with a stock engine.
* Performance Tune-up: New spark plugs, wires, cap, and rotor are essential for optimal engine performance, especially in an older vehicle.
If your focus is on specific areas:
* Suspension Upgrades (Off-Road): For off-roading, consider a lift kit, larger tires, and upgraded shocks and struts.
* Suspension Upgrades (Handling): For improved on-road handling, consider lowering springs, upgraded shocks, and stiffer sway bars. This improves cornering and reduces body roll.
* Brakes: Upgraded brake pads and rotors will improve stopping power, which is crucial for any performance upgrade.
Before making any significant upgrades:
* Assess your current engine and drivetrain: Make sure your existing components are in good condition to handle the increased power. A poorly maintained engine or transmission will quickly fail under increased stress.
* Research compatibility: Ensure that any parts you buy are compatible with your specific year and model of S-10.
* Consider professional installation: Some upgrades, especially engine swaps and complex suspension work, are best left to professionals.
Ultimately, the best upgrade for *your* 1987 S-10 depends on your priorities. Starting with smaller, more affordable upgrades like a tune-up, exhaust, and cold air intake can give you a good performance boost before investing in more substantial changes.
