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The new Thumpr™ Camshafts are a new series of retro-fit hydraulic roller camshafts engineered to deliver a thumping, high-performance idle in Small & Big Block Chevy, Ford 351 Windsor and Small Block Chrysler engines.


Thumpr™ Camshafts are available in three different grind profiles for each engine, all of which will produce a rough, racy exhaust note and impressive power. Click product image for pricing and applications...

 

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COMP Cams® Ultra-Gold™ Aluminum Rocker Arms are designed specifically for high performance street and race engines, and are precision CNC-machined to strict tolerances and built to withstand aggressive, high pressure valve springs up to 1.650" O.D.


Developed to meet the demands of professional engine builders, they are in a variety of rocker stud diameters and rocker ratios for Small and Big Block Chevy and Small Block Ford applications. Click product image for pricing and applications...

 

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New COMP Cams® Lightweight Tool Steel Retainers are 33% lighter than conventional chromemoly retainers and only 2-4g heavier than Titanium (depending upon application).


Their high grade tool steel can withstand even the most demanding race applications. These unique retainers offer superior control of valve motion and high rpm stability. Click product image for pricing and applications...

 
     
 
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GM GEN III-XR275HR-12
LS1/LS2/LS6 HYD. ROLLER-Great street/strip
camshaft for mid-range and high rpm
power. Must have programmer.#54-426-11

 
Thumpr™

HYDRAULIC ROLLER –High performance street,
stock converter ok, best with 2000+ converter
and gears, choppy idle


   
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listen to this cam
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GM GEN III-XER273HR-14(idle)
LS1/LS2/LS6 HYD. ROLLER-High rpm street/strip.
XE-R lobe designs. These are the most aggressive
lobes for all out applications.#54-444-11


  Mutha Thumpr™
HYDRAULIC ROLLER –High performance street/
strip, needs 9:1 CR, 2500+ stall, intake,
gears, and headers, rough idle

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listen to this cam
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GM GEN III-XER273HR-14(dyno pull)
(opens in a new window)

LS1/LS2/LS6 HYD. ROLLER-High rpm street/strip.
XE-R lobe designs. These are the most aggressive
lobes for all out applications.#54-444-11


  Magnum 280H
HYDRAULIC-Great for street machines.
2500+stall, headers & gears. Rough idle.
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listen to this cam
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GM GEN III-XER287HR-12
LS1/LS2/LS6 HYD. ROLLER-Xtreme Energy XE-R
design for large cubic inch LS6 and LS1.
Race Only Applications.#54-448-11


  Magnum 292H
HYDRAULIC-Street/strip special
3000 stall, headers, gears,
9.5:1 CR. Very rough idle.

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listen to this cam
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GM GENIII XR-269HR-14(LS1)
LS1/LS2/LS6 HYD. ROLLER-Great mid-range
with superior top end power. Needs
programmer.#54-414-11


  Xtreme Marine™ -XM278H
HYDRAULIC-Jet boat with A or B
impeller, good off shore high
performance cam, rough idle.

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