2003 Chevrolet Corvette Base Performance Parts

BTR HOT ROD CAMSHAFT 217/24X, .618/.608, 114 LSA INTAKE LOBE LIFT @ TDC: 0.03980 BTR's Hot Rod cam delivers an aggresive idle while maintaining good street manners. It makes slightly less torque down low than our Truck Norris cam yet produces an additional 20+...

BTR 5.3 STOCK BLOCK MAX EFFORT TURBO CAMSHAFT 23X/25X, .614"/.614", 113.5 LSA This BTR 5.3 MAX EFFORT hydraulic roller turbo cam has made upwards of 1650-1700 rwhp when ran in a stock block 5.3 running BTR boost ready 10.5-1 compression forged pistons, BTR prepped...

BTR LS3 TO LS1 TOP HAT ADAPTER SET - INJ-ADPT1-8 These BTR injector adapters allow you to maintain your existing injector heights while changing intake manifold designs. Includes o-rings and injector clips. LS3 Injector Height: Measures roughly 38mm (1.5 inches) from O-ring center to...

BTR RED HOT CAMSHAFT 221/24X, .619/.617, 113 LSA INTAKE LOBE LIFT @ TDC: 0.04730 BTR is proud to introduce our newest camshaft offering for 5.7, 6.0, and 6.2 LS engines. Affectionately dubbed The Red Hot Cam, we have put this camshaft in a wide...

BTR CENTRIFUGAL STAGE 2 CAMSHAFT 221/24X, .619/.617, 113 LSA INTAKE LOBE LIFT @ TDC: 0.04730 This new version of our Stage 2 Centrifugal camshaft makes excellent power and torque everywhere in the curve. Developed in house, we went back to the drawing board and...

BTR CENTRIFUGAL STAGE 1 CAMSHAFT 217/23X, .619/.607, 114 LSA INTAKE LOBE LIFT @ TDC: 0.03980 This new version of our Stage 1 Centrifugal camshaft makes excellent power and torque everywhere in the curve. This cam works well in 5.3-6.2 combos using smaller centrifugal blowers...

BTR .660 PLATINUM SPRING KIT WITH VALVE TIP SAVERS - BRONZE GUIDES - .060" LOCATORS - BTR-SK001/6560/BB/TS The BTR platinum spring kit would be inducted into the LS aftermarket hall of fame if such a thing existed. Whether you’re putting together a daily driver...

BTR .660 PLATINUM SPRING KIT WITH VALVE TIP SAVERS - STOCK GUIDES - .060" LOCATORS - BTR-SK001/0560/BB/TS The BTR platinum spring kit would be inducted into the LS aftermarket hall of fame if such a thing existed. Whether you’re putting together a daily driver...

BTR PLATINUM PLUS .685 VALVE SPRING KIT WITH TITANIUM RETAINERS AND VALVE TIP SAVERS - BRONZE GUIDES - BTR-SK702/6560/BB/TS When you decide to take a walk on the wild side and exceed the .660” limit of our popular Platinum Spring Kit, the next step is...

BTR PLATINUM PLUS .685" VALVE SPRING KIT WITH TITANIUM RETAINERS AND VALVE TIP SAVERS - STOCK GUIDES - BTR-SK702/0560/BB/TS When you decide to take a walk on the wild side and exceed the .660” limit of our popular Platinum Spring Kit, the next step is...

BTR .625" LIFT BEEHIVE VALVE SPRING KIT - .045" THICK LOCATORS - BTR-SK018 BTR is proud to introduce our new SK018 Beehive style valve spring kit. This is a great option for camshafts using less than .625" valve lift. This budget friendly valve spring...