Description

Improved top end power
Twin Cat exhaust for maximum performance
Hi stall, head work & tuning required
Use DG4 oil pump gear

RPM Range	Part No.	Duration				with 1.65 Rocker		Lobe Sep Angle	Lash Measured Hot
		Advertised		@.050”
		IN	EX	IN	EX	IN	EX		IN	EX
3200 – 6500	41754	288°	293°	258°	262°	0.559	0.554	111	HYD	HYD

 

 

recommended parts

CS8308	Holden V8 Timing Chain Set
CRHL8167	Holden V8 Roller Rockers
4134-16	Single Groove Machined Valve Locks
7333-16	Dual Valve Springs
11700-16	Chrome Moly Performance Retainers
VSV530-16	Blue Viton 11/32″ Valve Stem Seal
CST100940	Rocker Studs 7/16″ Heads to 7/16″ Rocker
GP304	Holden EFI V8 Guide Plates
5208HR	Johnson Holden V8 Hydraulic Roller Lifters 2616HNR-16

 

Must use performance springs.

Must use performance retainers.

Converter stall speed should be equal to or greater than the minimum RPM of the cam power range

Use DG4 oil pump gear