Help is just a click away!
Click here to chat with a Speedway Team Member
💬
Online - Chat with us!
Chat
Products to Compare (max of 3)
X
Compare These Parts
Talk to the Experts. Call 800.979.0122, 7am-10pm, everyday.
Customer Service
Since 1952
in
in
  • Expert Tech Support
  • Huge Inventory
  • Fast Shipping
Talk to the Experts. Call 800.979.0122
Shop By
Support
Account
Street Race Truck More... The Toolbox
Add to Cart
$998.99
COMP Cams GK11-602-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
COMP Cams GK11-602-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B

COMP Cams GK11-602-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B

396 Chevy Big Block V8, 402 Chevy Big Block V8, 427 Chevy Big Block V8, 454 Chevy Big Block V8

0 Reviews | 0 Answered Questions
Factory Shipped
Ships FREE
Select your vehicle to verify fitment.
Select Vehicle
COMP Cams GK11-602-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
COMP Cams GK11-602-8 Thumpr Hyd. Roller Camshaft Kit, Chevy B/B
Zoomed In Image
We estimate this item will ship on or before October 9th.
Part # 282GK116028
$998.99
each
Quantity:
Add to Cart
Call to Order
Add to Buildlist
Compare

Details
Reviews
Q&A
Videos & Articles

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
Intake Duration:
299
Exhaust Duration:
319
RPM Range:
2300 to 6100
Lobe Separation:
107 °
Intake Duration @ .050" Lift:
243
Exhaust Duration @ .050" Lift:
257
GTIN Code:
036584183358
MFG. Part #:
GK11-602-8
Grind Number:
299THR7
Intake Valve Lift w/ Rocker Arm Ratio:
0.57"
Exhaust Valve Lift w/ Rocker Arm Ratio:
0.554"
Computer-Controlled Compatible:
No
Valve Springs Required:
Yes
Valve Spring Included:
No
Lifter Type:
Hydraulic Roller
Lifters Included:
Yes
Retainers Included:
No
Locks Included:
No
Valve Stem Seals Included:
No
Timing Chain and Gears Included:
Yes
Assembly Lubricant Included:
Yes
Rocker Arms Included:
No
Gaskets Included:
No
Sold in Quantity:
Kit

Info

GK11-602-8 - Camshaft Kit, CB 299T HR-107 B MT THUMPR.

Chevrolet 396-454 c.i. 8 CYL. 1965-1996. Hydraulic Roller-(Big Mutha' Thumpr) Street/strip, needs 9.5:1 CR , 2800+ stall, intake, gears, and headers, very rough idle. Thumpr Retro-Fit Hydraulic Roller Camshafts. Camshaft/lifter/gear drive kit. Precision machined. Heat treated billet steel gears. 3-way crank sprocket. 4 deg. maximum advance or retard. Ready to install kit includes bolts and lock plates. Perfect addition for street performance vehicles.

  • Three unique cam designs for each application that deliver excellent horsepower gains & broad torque curve; perfect choice for muscle cars & street rods
  • Early intake valve opening & long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
  • Best with aftermarket converters & more rear gear

Application

1967-90 Chevy 396-454
Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

More Like This

Reviews

Q & A

Videos
  • What happens when you advance or retard a camshaft? In this tech article, we explain the pros and cons of installing your cam straight up, advancing or retarding.
  • Learn the basics to engine performance like; how does a cam work? What is Valve lift, duration, lobe separation angle, and cam profiles? Afterwords selecting the right camshaft will be less of a guessing game!

You May Also Like

Suggestions
Error
Note
Ok