Small Bolt Pattern Camshaft Blank

CNC machined out of 8620 chromemolly alloy steel. 4 bolt design. Works well for flat tappet, lower spring pressure camshafts.

$70.00

Adjustable Cast Cam Gear

We have taken the stock Command cam gear and machined it to fit our cam blanks. This is a cheaper alternative to a steel gear. Also works well for governed, 5000 RPM, and lower spring pressure sport stock engines.

$54.40
$34.40 Exchange
Copyright © 2006-2011 Zach Kerber Machine & Design L.L.C

Valve Springs

This is a little information about engine valve springs. When talking about valve springs there is some industry lingo that confuses most people. First is I/H, Installed Height. What this is referring to is the distance between the head and the underside of the retainer when the valve is closed. This is important so you know what your spring pressure is when the valve is closed. Second is C/B or coil bind. This is the measure of the spring when it is completely compressed. And lastly is all springs have a “rate” this is the amount of pressure the spring will produce per inch of travel. This is an average over the springs sweep. Obviously some springs do not have an inch of travel so you can figure the pressure by dividing the rate by 10 and that will be the pressure every .100 of lift. Again this is a calculated number and really should be checked on a spring pressure tester.

Stock length valve spring kit.

These springs are a nice spring for open RMP stock length valve engine. Includes billet 7075 retainers machined for 7mm valves.

66 lbs at 1.400 Installed height
Rate  251
Coil Bind .900
$49.00 set of 4

.300 longer valve spring kit.

This is a good spring for the .300 longer valves. These could also be used as a stiffer stock length valve spring as well. Includes billet 7075 retainers machined for 7mm valves.

88 lbs at 1.500 Installed height
Rate  289
Coil Bind .950
$59.00 set of 4

Dual valve springs

To be used with heat treated steel cams. Flat tappet or roller cams.

130 lbs at 1.650 Installed height
Rate  285
Coil Bind .950
$14.90 Each

Dual valve springs

To be used with heat treated steel cams. Flat tappet or roller cams.

175 lbs at 1.600 Installed height
Rate  300
Coil Bind .980
$14.90 Each

Billet 7075 retainers for dual valve springs

Machined out of hard 7075 billet aluminum. Made for stock 7mm keepers.

$6.00 Each

Super 7 retainers for dual valve springs

Manufactured and designed in house. These are the same locks that Nascar uses. This retainer kit is made for high lift, very high spring pressure, and super radical cam grinds. Retainers are machined out of the same 7075 material as all the others but feature a large surface area to prevent pull through failures.

$13.50 Each

Includes 1 retainer and 2 locks

Large 5 Bolt Pattern Camshaft Blank

$118.00

Adjustable Steel Cam Gear

Not Pictured

$80.00

Cool Face EDM Lifters

Not all lifters are the same. These are American made high quality heat treated lifters that feature a special ground face and also have a .040 diameter oil hole in them to allow a film of oil to keep the cam/lifter face oiled. We highly recommend these with any flat tappet cam.

$16.99 Each

Roller Lifters

Also American made. Cross bar style. Machining of the block is required to clear the cross bar.

$68.00  Pair

Adjustable Pushrods

$13.00 Each
52 lbs at 1.300 Installed height
Rate  105
Coil Bind .850

Excellent spring for the governed or 5000 RPM engines. Springs have been proven to work and retain pressure over several seasons of pulling. Includes billet 7075 retainers machined for 7 mm valves

Stock length valve governed spring kit

$42.00 set of 4

New!! This all new innovative design solves the problem with the rocker not being centered over the valve. We have designed these guide plates to inner lock and be adjustable side to side to allow the builder to correctly position the rocker. It is recommend to tig weld the plates together after they have been aligned but is not necessary.

Guide plates

$20.00 set

Cylinder head inserts NOT drilled for the rocker studs allows the builder to use or drill where they so choose for different rockers and stud combinations.

Head inserts

$19.00 each

Inserts have been drilled and tapped for 7/16-14 screw in rocker studs.

$21.00 each

Head inserts drilled and tapped