Seats, Hardened Spring Seats for Item # 6.VSP515.   Premium hardened spring seats made of 4130 chrome moly steel and black oxide finished. This set of seats are specifically for 6.VSP515 valve springs on L98 and LT1 engines. Set of 16. O.D...

Seats, Hardened Spring Seats for Item # 6.VSP505 & 6.VSP510.   Premium hardened spring seats made of 4130 chromoly steel and black oxide finished. This set of seats are specifically for 6.VSP505 and 6.VSP510 valve springs. Set of 16. O...

Retainers, Valve Spring Retainers, Ultra Light Weight.   Ultra light weight steel retainer for 6.VSP505 and 6.VSP510 springs. These are a great alternative to expensive titanium retainers. Uses the standard 7 degree valve locks. Set of...

Retainers, Valve Spring Retainers, Titanium.   Premium Titanium retainer for 6.VSP500 valve spring. These light weight retainers are able to give you an extra 200-300rpm before valve float. These are a hi-performance retainer that require 10...

Dual Spring Valve Springs, Set.   This is a dual coil spring with damper measuring 1.437" outside diameter and .630 ID. The seat pressure is 140lbs at an installed height of 1.750" and open pressure is 335lbs at 1.150". Max lift is .625". This...

Flat Tappet Valve Springs, Set.   Made for TPIS 276/286 and 280/280 Hyd. flat tappet camshafts, this single spring with damper has an OD of 1.250" and an ID of .880". The seat pressure is 110lbs @ 1.750" installed height ans an open pressure...

Single Hydraulic Roller Valve Springs, Set.   A single spring with damper for TPIS line of hydraulic roller camshafts. 115lbs of seat pressure @ 1.800" installed height and 325lbs at 1.200" with coil bind at 1.150". Outside diameter is 1.250"...

Camshaft, TPIS ZZx Hydraulic Roller Camshaft, 87-94 SBC/LT1 This is the largest hydraulic cam TPIS' offer for the SBC/LT engines.  This cam with its 239 degrees of duration and .558" lift, is streetable, but is intended for race engines...

Camshaft, TPIS ZZ9X Hydraulic Cam, 87-94 SBC/LT1. Designed specifically for forced induction and nitrous engines, this cam takes the intake lobe with 226 duration and .520" lift from our ZZ409 and the exhaust with 239 duration and .558" lift...

Camshaft, TPIS ZZ409 Hydraulic Roller Camshaft, 87-94 SBC/LT1. This is TPIS' most popular cam for the SBC/LT engines.  It is simply awesome!  The .520" lift, 226 duration single pattern design is an excellent choice for a wide variety of...

Camshaft, TPIS ZZ10 Hydraulic Roller Camshaft, 87-94 SBC/LT1. This 233/240 split duration cam is a good choice for a large displacement LT or small block fitted with a MiniRam intake.  Its .538"/.560" lift numbers really benefit bigger heads and...

Camshaft, TPIS Super L98 Hydraulic Roller Camshaft, SBC up to 1986. This particular cam is a great little upgrade for a TPI 305 or 350.  You can see 30-35hp and 40-50 lbs/ft on a stock aluminum head TPI Corvette engine and with the addition of 1.5...