TSP PRC 312cc CNC Ported LT1 Style 6-Bolt Cylinder Heads PAIR - AssembledTSP PRC 312cc CNC Ported LT1 Style 6 Bolt Cylinder Heads PAIR w TSP . 660" Spring Kit and Titanium Retainers Precision Race Components (PRC) LT1 CNC 312cc ported cylinder heads. All new 6 bolt Precision Race Components LT cylinder heads! Extensive CNC and dyno testing has resulted in one of the most powerful LT based cylinder heads available! MADE IN THE USA!! CAST IN THE USA!! MACHINED IN THE USA!! Features: 2. 165" Stainless Hollow stem Intake Valve

Compatible with X1 High Flow EFI Conversion kit

The FAST™ Precision-Flow™ Fuel Injectors are some of the highest flowing injectors available for GM Gen IV engines and are uniquely designed for direct installation into LS3

stock replacement pushrods from BTR are designed for MILD

Rather than relying on the piston skirt to locate the pistons as they're being inserted into the block like one piece tapered ring compressors currently on the market

The Lingenfelter Big Bore direct injection fuel pump for GM Gen V V8 applications provides an increase in fuel flow capacity over the stock LT1/L86 and LT4 fuel pumps

high-RPM performance

This item is extremely popular for anyone swapping camshafts in these Gen 5 engines

this design does not require oil pump clearancing when used with a production-style oil pump

Included thermal bypass valve delete allows fluid flow to the cooler at all times

2 cc Flat Top

Part Number SK707/0560/BB Part Type Valve Spring Kit Brand Brian Tooley Racing Engine Type Gen V Max Lift

you will need to perform the VVT delete as well