Manufacturer's Part Number CL12-673-4
Product Line COMP Cams Nostalgia Plus Cam and Lifter Kits
Summit Racing Part Number CCA-CL12-673-4
Cam Style Mechanical flat tappet
Basic Operating RPM Range 2,300-6,900
Duration at 050 inch Lift 247 int./254 exh.
Advertised Duration 284 int./291 exh.
Valve Lift with Factory Rocker Arm Ratio 0.504 int./0.498 exh. lift
Lobe Separation (degrees) 112
Intake Valve Lash 0.012 in.
Exhaust Valve Lash 0.012 in.
Grind Number CS NOSTALGIA 30-30+ SOLID
Cylinder Head 105 - Valve Job Basics
Valves not sealing? Valves not bent? This is how you fix that problem.
In this video I outline the basic valve job procedure. Cleaning the
valves, cleaning the seats, cleaning the combustion chamber and lapping the
valves in to make a better seal.
Here I cover the process start-to-finish. It's the same exact process for
pretty much all non-rotary combustion engines. It takes patience and
perseverance to do this job, but anyone can do it. Reference your service
manual for measurements and service limits. Everything else that's not in
your service manual is in this video.
I apologize for not having broken busted crap to work with in this video.
It's more beneficial to all of you when bad fortune falls on me because it
gets well documented, and many people watching these videos are looking for
answers. If you have bent valves, you will discover it quickly once you
chuck one up in the drill. You'll see the face of the valve wobble around
while it spins. You'll see evidence of this damage on the valve seat. If
it's bad, you may see damage on the valve guides in the form of cracks or
missing pieces where the valve guides protrude through the head ports.
Give all that stuff a good visual inspection. ...and if you doubt yourself,
never hesitate to get a second opinion or consult a machine shop. They
will have access to expensive tools that you wont find in your average
Aarons 1964 Corvette Coupe L76 327 365
Just finised the mechanical restoration of my 1964 Corvette with its
original L76 327 365 horse power engine. This motor is basically a stroked
version of the famed DZ302 (which you can hear in my other video) This car
will be for sale once the paint and assembly is finished.
CHEVROLET DZ302 V8 (A REAL ONE!)
http://www.kennedyperformance.com. THIS IS AN ORIGINAL DZ 302 OUT OF A
1969 Camaro Z-28
REBUILT BY KENNEDY PERFORMANCE. IT PRODUCES 345FTLBS TORQUE AND 415 HP
MEASURED ON A SUPERFLOW Dyno AND STP CORRECTION FACTOR.
Dyno TESTED TO
383 Stroker Dyno Session 450hp 479 ft lbs torque!
Chevy 383 Stroker. AFR 195cc eliminator heads fully CNC ported, Mighty
Demon 750 Carb, Weiand Stealth "Air Strike" Intake Manifold, Comp Cams
Extreme Energy 284 Camshaft, Stainless Steel Roller Rockers, Bad Ass "383
Stroker" Cast Valve Covers, Cast Chevy 400 Crankshaft, Forged Speed Pro
383 pistons, Eagle I Beam Connecting Rods.
This is my first video Ive ever made, so sorry if it sucks. Had to trim it
down from 30+min long. And I didnt even get all the pulls in. Made a
total of 9 Dyno Pulls
that day, with a result of 450 hp and 479 ft lbs. On the later pulls I had
him turn the Dyno down
to read as low as possible, which is 3000 RPM. By 3k it was already making
430 ft lbs! and at 6000 was still at 412 ft lbs, VERY flat and nice torque
curve. We tried different size jets, 2 different carb spacers, and played
with the timing. Best result was out of the box jetting for the carb, and
carb right on the manifold! Lost 15 ft lbs on the low end with the carb
spacers! Was a great day at the Dyno shop, hope you guys enjoy
1969 Chevy Camaro Z28: Beautiful Engine Rumble
See all of our classic vehicles available for sale at Left Coast Classics
and this car at http://www.leftcoastclassics.com/1969-chevrolet-Camaro-Z28/ or call Donn at
707-332-8331 to get your hands on any of our fine classics.