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Home » Chevy SS Sedan (2014-2017) » Engine Components » Camshafts » 54-602-11
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Comp Cams Big Mutha Thumpr - 291THR7 Street/Strip - Very Rough Idle - GM LS Motors

Part # 54-602-11
Sale Price: $368.95 you save $31.00!
Retail Price: $399.95
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Product Info

COMP Cams #54-602-11 Big Mutha Thumpr Chevy GM LS1, LS2, LS6, LS7  Hydraulic Roller Camshaft (3 Bolt) Direct Replacement
 
BIG MUTHA’ THUMPR - Street/strip, needs 9.5:1 CR , 2800+ stall, intake, gears, & headers, very rough idle. With great performance and availability, the GM LS (LS1, -2, -6, -7) engines are an increasingly popular choice for retro-fit street rod and muscle car applications. In stock form, these engines are decent performers but they have much more to offer. And now with the Thumpr GM LS Cams you can have all the efficiencies delivered by this modern engine platform with a head turning “old school” hot rod sound and serious performance to back it up. The new Thumpr GM LS Cams are compatible with both carbureted and re-tuned electronic fuel injection (EFI) engines and do not sacrifice anything in durability or street manners. * In EFI applications, computer tuning is required. Designed for EFI (tuning required) & carbureted 1997-2008 GM LS (LS1, -2, -6, -7) engines; excellent street manners Early intake valve opening and long exhaust duration create optimum overlap for a powerful, hard-hitting exhaust sound
 
Camshaft Specs.

PART

NUMBER

 

Valve Setting

RPM

Range 

Cam Grind

Number

Duration

Valve Lift @ 1.7:1

Lobe Sep.

Angle

Int.

Ext.

Adv.

@.050"

In.

Ex.

In.

Ex.

In.

Ex.

54-602-11

Hyd.

Hyd.

2600-6800

291THR9

291

311

235

249

 .573

 .558

 109

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