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Street Race Truck More... The Toolbox
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$471.77
$424.99
COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM
COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM

COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM

Chevy LS V8, Hydraulic Roller Tappet Camshaft Type, 1800 to 6500 RPM Range, 282 Intake Duration

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COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM
COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM
COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM
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COMP Cams 54-703-11 Thumpr Camshaft, GEN IV GM LS, 1800-660 RPM
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We estimate this item will ship on or before July 30th.
Part # 2825470311
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$424.99
$471.77
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 10 business days for COMP Cams to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.

Details

Camshaft Type:
Hydraulic Roller Tappet
RPM Range:
1800 to 6500
Intake Duration:
282
Exhaust Duration:
299
Lobe Separation:
113 °
Intake Duration (.050" Lift):
227
Exhaust Duration (.050" Lift):
237
Intake Valve Lift w/ Rocker Arm Ratio:
0.641"
Exhaust Valve Lift w/ Rocker Arm Ratio:
0.612"
Computer Controlled Compatible:
Yes
MFG. Part #:
54-703-11
GTIN Code:
00036584386438
Valve Springs Required:
Yes
Gear Attachment:
3-Bolt
Material Type:
Billet Steel
Sold in Quantity:
Each
Notes:
High-lift valve springs, AFM and VVT delete are all required.

Info

Thumpr lobe design for awesome idle lope in modified 5.3L & 6.0L truck engines. Required high lift valve springs ensure maximum power gains. AFM & VVT delete.

  • For Stage 2 Thumpr Cam for GEN IV LS 4.8/5.3/6.0L Trucks
  • Camshaft Series: Thumpr Series
  • Cam Type: Hydraulic Roller
  • Basic Operating RPM Range: 1,800-6,600
  • Intake Duration at .050 Inch Lift: 227
  • Exhaust Duration at .050 inch Lift: 237
  • Advertised Intake Duration: 282
  • Advertised Exhaust Duration: 299
  • Lobe Separation: 113
  • Intake Valve Lift: 0.614
  • Exhaust Valve Lift: 0.612
  • Lifters Included: No
  • Valve Springs Required: Yes
Some parts are not legal for use in California or other states with similar laws/regulations

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  • To get the longest life and most performance out of your engine, it's important to have the valve lash set correctly. Here we show you how to set valve lash on a small block Chevy using a hydraulic lift camshaft.

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