269 Motorsports Starter Bolts for LS Engines 11610633 — Pair of Long Knurled Bolts for LS1/LS2/LS3/LQ4 Alignment

These are the two precision long starter bolts (part 11610633) from 269 Motorsports designed to correctly locate and secure starters on LS-family engines.

If your LS-based car or truck uses a starter that fastens with two long bolts, using the correct bolts is essential to keep the starter aligned with the crankshaft flywheel. These starter bolts include a knurled section near the threads that indexes into the block, preventing lateral movement that can lead to starter misalignment, starter damage, or even cracked engine blocks. 269 Motorsports supplies them as a matched pair so you replace both long fasteners at once for reliable fit and performance.

How do these starter bolts prevent starter and flywheel damage?

The knurling on each bolt seats into the starter bore in the engine block and resists rotational and lateral movement. That positive fit keeps the starter gear properly meshed with the flywheel and reduces stress on both parts.

• Knurled locating surface locks bolt position in the block.
• Maintains consistent starter-to-flywheel engagement.
• Reduces risk of starter wobble and flywheel wear.
• Prevents starter-induced block cracking from movement.

Which LS engines and vehicles will these bolts work with?

These bolts are made for LS-family GM V8 engines that use two long starter bolts instead of one long plus one short or different pattern. They are compatible with common LS variants used in cars and trucks.

• Fits LS1, LS2, LS3, LS6, LS7, LS9 platforms.
• Also compatible with truck-style LQ4 and LQ9 blocks where two long bolts are specified.
• Works for original equipment and many swap applications using two long-bolt starters.

Can I reuse my original bolts, or should I replace them with these 269 Motorsports bolts?

Reusing damaged or unknurled bolts risks starter misalignment; replacing both long bolts with new, knurled units is a preventive step to protect the starter, flywheel, and block. If the original bolts have no knurling or show wear, install these new bolts.

• Replace if original bolts lack knurl or show thread/wear damage.
• Install both bolts as a matched pair for even clamping and alignment.
• Torque per manufacturer specs to avoid overloading the block threads.

How should I install these starter bolts for reliable alignment?

Hand-start the bolts to ensure correct engagement, then tighten to the engine manufacturer’s torque spec. The knurled section should seat into the starter bore; do not force or cross-thread the bolts.

• Thread by hand until seated, then torque to spec.
• Verify knurling engages the block starter bore evenly.
• Check starter alignment before final torque; adjust if needed.
• Replace both long bolts together for consistent alignment.

Who is this for: These 269 Motorsports starter bolts are intended for automotive technicians, engine builders, and DIY enthusiasts working with LS-series Chevy engines and compatible swaps. If you maintain or install starters on LS1/LS2/LS3/LS6/LS7/LS9 or LQ4/LQ9 engine blocks and want to avoid starter misalignment or block damage, these knurled long bolts provide a simple, durable solution.