OS Performance

OS Performance Specialization in all carbureted and LS performance along with engine build ,tuning and fabrication Owner Robert Hanneman

This killer 1972 Corvette with a 383 came in for a makeover. We converted this over to the Holley Sniper Stealth EFI sys...
06/25/2026

This killer 1972 Corvette with a 383 came in for a makeover. We converted this over to the Holley Sniper Stealth EFI system, Holley fuel tank, Holley serpentine system, Dakota Digital gauges, Vintage Air A/C system and a few more goodies, we got this hotrod running like a dream all while keeping the owner cool in this muggy weather!

This K5 came in for a tune for the Sniper and we upgraded the distributor at the same time to get this thing running lik...
06/23/2026

This K5 came in for a tune for the Sniper and we upgraded the distributor at the same time to get this thing running like a top

Rob got this sweet little Pontiac 347 motor put together with some nice upgrades. We will be putting this into a 57 Chie...
06/23/2026

Rob got this sweet little Pontiac 347 motor put together with some nice upgrades. We will be putting this into a 57 Chieftain here soon!

This BADASS 97 Tahoe is almost done! Hitting the dyno in a couple days and of course we will have videos of that! This T...
05/14/2026

This BADASS 97 Tahoe is almost done! Hitting the dyno in a couple days and of course we will have videos of that! This Tahoe got a Rob built Aluminum block 383 LS stroker motor, a new TCI 4L60E, Holley Terminator X Max, Dakota Digital gauges, 3.73 gears and a Posi unit, Belltech flip kit in the rear, rear disc brake conversion and so much more. This is one hell of a grocery getter for sure! Videos don't this truck any justice, this thing sounds like an absolute UNIT

This LS swapped 1967 Chevelle came in for a Wilwood master cylinder
04/24/2026

This LS swapped 1967 Chevelle came in for a Wilwood master cylinder

Been slacking on social media posts but for good reasons, this good weather has brought the hotrods out and we are busy ...
04/02/2026

Been slacking on social media posts but for good reasons, this good weather has brought the hotrods out and we are busy busy busy!

Some Wilwood brake action on a 96 Impala!
04/02/2026

Some Wilwood brake action on a 96 Impala!

Address

1250 Yeamans Hall Road
Hanahan, SC
29410

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

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