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Price: $329.99
Kit Come With Cam Lifters And Timing Chain And Valve Springs ReTainers
Muscle car sound is back and nastier than ever; Thumpr Cams deliver incredible exhaust lope and impressive performance. COMP Cams® designed the Thumpr series of camshafts to deliver the meanest-sounding idle on the block, but we didn’t skimp in the horsepower department in order to make it happen! Even the mildest Thumpr Cam profile produced significant horsepower and torque increases when put to the test. So rest assured that all of the muscle car attitude that your Thumpr-equipped ride will be sporting is going to be backed up by the proven performance that you have come to expect from the horsepower experts.Specifications Intake Exhaust RPM Range: Valve Lash: Valve Timing: Duration: Lobe Separation: Duration @ .050\" Lift: Intake Centerline: Valve Lift: Lobe Lift: Valve Timing @ 0.006 Lift:
Part Number: Grind Number:
Lifter Type: Engine Family: Chevrolet 262-400 c.i. 8 cyl. 1955-1998 Description: Hydraulic-(Thumpr™) High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle Cam Family:
Lifters 812-16
Applications – Chevy V8 348-409 (1958-65), 265-400, 396-454
Specs – .842” diameter; 94g weight; 1.99” seat height
High Energy™ Hydraulic lifters have a patented constant orifice metering valve that precisely meters oil to the rocker arms. Continuous contact between the metering valve and pushrod seat is maintained, eliminating excessive oiling at high engine speeds. The pushrod seat is made of a special powdered metal iron alloy that is heat-treated for strength and wear resistance.
In addition, High Energy™ Lifters have a lightweight check valve disc that allows for quicker response, which results in increased engine speed before valve float. This check valve disc also maintains added control at all engine speeds and loads.
COMP Cams® High Energy™ Hydraulic Lifters also contain a longer piston than conventional hydraulic lifters, which provides more load bearing surface and increases lifter longevity.
Comp Cams 2100
Magnum Timing Sets; Chevy 65-400, \'55-91; V6 90° 200,229,262, \'78-86 (Except w/ Factory Roller)
• Feature induction hardened cast iron camshaft gear and billet steel crank sprocket
• 3 keyway crank sprocket for 4-degree incremental adjustability, 4-degree maximum advance/retard
• Heavy-duty, heat-treated true double roller timing chain; chain available separately
• Ideal for mild street performance applications
Single Outer Valve Springs from COMP Cams® allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams® has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers.
Comp Valve Springs 981-16
Comp 742-16 Steel Reainers
7° Steel Retainers: 1.250\" Spring Dia.
Valve springs with larger diameters require retainers to handle the higher pressures developed by the springs. COMP Cams® steel retainers are the perfect solution. This 7° steel retainer for Chevrolet V6 and Small Block, as well as Buick V6 applications is precision machined from 4140 chromemoly steel and finished in black oxide. This precision retainer is specifically designed for positive location when combined with COMP Cams® high-quality valve springs.
Comp 601-16 Valve Locks
These hardened steel, single groove Steel Street Locks with 7° lock angle and 11/32\" valve stem size are perfect replacement locks for stock engine rebuilds. They are recommended only for street applications with lighter valve spring loads. It is critically important to make sure valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the O.D. of the stem, the locks are too small.
Most people believe that the tang inside a valve lock holds the retainer and valve spring in place while the engine is running. This is not the case. The cross-section of material in the tang is not strong enough to withstand open spring loads of 1000 lbs. or more. The sole purpose of the tang is to temporarily locate the lock, retainer and spring relative to the valve until the taper of the retainer can nest around the outside surface of the lock. This creates a “collet” effect that binds the two together. The more spring force exerted on the retainer (as the valve opens), the more force applied by the “collet” effect to keep the retainer and lock in place.
Tracking info provided for all items, UPS is preferred and is extremely accurate, USPS is provided but sometimes won\'t show in system until it reaches YOUR post office.International bidders must have a feedback rating of at least 10 and 95% positive, if there is question of your international eligibility, please don\'t hesitate to ask us. We love to combine shipping for our buyers, if it isn\'t showing adiscounted rate on combined items with checkout, just drop us anemail and we will send a corrected invoice, combined shipping must be donePRIOR to payment to qualify for combined rates. Unlike other sellers who charge a fixed rate plus other charges, when combined by US, we charge only ACTUAL Shipping.
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