Description

Performance cam
Good mid to upper RPM range
Choppy idle
Needs comp, heads, manifold, headers and hi stall

 

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
3700 – 7000	41571	310°	310°	246°	246°	0.627	0.627	110	HYD	HYD

 

recommended parts

CS8308	Holden V8 Timing Chain Set
CRHL8167	Holden V8 Roller Rockers
4133-16	Single Groove Machined Valve Locks
7342-16	Dual Valve Springs
11710-16	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.

Machining required to fit these components.

Must use performance seal.

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