Kelford nokka-akseli, GM LS V8, 3-pulttinen nokkaratas

Kelford camshaft, GM LS V8, three-bolt cam gear

608,00 €

Kelford camshaft for the GM LS V8, three-bolt cam gear engine. Choose a profile to suit your engine parts and intended use. Profile specifications and required modifications are detailed below.

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SKU: TS108 Category: Camshafts

Description
Additional information

Kelford camshaft, GM LS V8, three-bolt cam gear

Kelford is a New Zealand camshaft manufacturer with roots in Christchurch dating back to 1968. Its profiles range from upgrades for street-driven cars to fully built race engines. Choose the cam around the rest of the engine and its intended use, rather than simply picking the longest duration.

This selection is for the GM LS V8, three-bolt cam gear engine. Profile differences, spring recommendations and required modifications are detailed below.

Technical specifications – available profiles for this engine

Profile TS108-P

For a built, powerful turbo LS, particularly a larger-displacement drag engine. Suitable for a 72–80 mm single turbo or twin 54–58 mm turbos. PAC-1204X springs are recommended for typical builds, spring selection must be reviewed separately for high-boost, high-rpm engines.

Specification	Intake	Exhaust
Cam lift	0.371"	0.371"
Rocker ratio	1.7	1.7
Net valve lift	0.630"	0.630"
Advertised duration @ 0.006"	290°	302°
Duration @ .050" cam lift	240°	246°
Timing IVO @ .050" cam lift	3 BTDC	–
Timing IVC @ .050" cam lift	57 ABDC	–
Timing EVO @ .050" cam lift	–	60 BBDC
Timing EVC @ .050" cam lift	–	6 ATDC
Suggested centre lines	117°	117°
Cam lift at TDC	0.066"	0.067"

Manufacturer profile information

Checking heights are shown with the duration figures. Net lift is the net valve movement specified by the manufacturer, while cam lift is listed separately. IVO/IVC denote intake valve opening/closing and EVO/EVC exhaust valve opening/closing. BTDC/ATDC mean before/after top dead centre, and BBDC/ABDC before/after bottom dead centre.

Installation and profile selection

Confirm the exact engine version, valvetrain design and the modifications required by the profile. Check cam timing and valve-to-piston clearance during installation. Springs, lifters and other supporting parts mentioned with a profile are not included unless the profile explicitly states that they come with the kit.

Check the cam gear bolt pattern, trigger and valvetrain. A production LS3 generally uses a single-bolt cam, so a three-bolt cam requires the appropriate gear and fasteners. Account for L99 AFM/VVT and lifters. RX solid roller profiles require the specified lifter conversion.

Examples of related vehicle applications

Chevrolet Corvette C5 LS1/LS6 (1997–2004)
Chevrolet Corvette C6 LS2/LS3 (2005–2013)
Chevrolet Camaro / Pontiac Firebird LS1 (1998–2002)
Chevrolet Camaro SS LS3/L99 (2010–2015)
Pontiac GTO LS1/LS2 (2004–2006)
Pontiac G8 GXP LS3 (2009)
Cadillac CTS-V LS6/LS2 (2004–2007)
Holden Commodore / Monaro, LS1/LS2/LS3, check the cam gear mounting

The list covers versions with the specified engines only. Exact fitment and required modifications depend on the selected profile, cylinder head, lifters and timing system.

Kelford Cams