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
Zora Arkus-Duntov's last public interview
He put the 'Z' in the Corvette Z06, he was a legend in the automotive
industry. See now his last public interview.
Because he and I are products of the College of Engineering at the
University of Texas, although at different times, Harold Bettes and I had a
common academic background and friendship. After a highly productive
stint at a little (at the time) fledgling company named MSD ignitions while
I was toiling at Edelbrock, he moved on to another evolving organization in
Colorado Springs, Colorado, named the Superflow Corporation.
It was here that he birthed the concept of annually bringing together a
hundred or more persons in global motorsports (engine builders, parts
manufacturers and related stakeholders) into an activity that grew much
larger over time, bearing the name Advanced Engine Technology Conferences
(AETCs), now sponsored by COMP Cams and a part of the Performance Racing
Industry (PRI) Show in Orlando, Florida. Harold also formed a Hall of
Fame segment in the AETC program. Each year, a single person was
identified as having made major career contributions to motorsports and
honored at the annual AETC banquet, culminating each year's conferences.
No, this column isn't about Harold, but that's the stage on which the
Read more at:
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.
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
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
Soundbite of 1969 Z28 Camaro with Comp Cams XR274R Cam No. 12-770-8
Stock Z28 "DZ" 302 cu. in. motor with upgraded valve train including Comp
Cam's solid roller cam 12-770-8, springs, lifters, push rods, cam button,
and #1804-16, 1.5 ratio Ultra Pro Magnum Roller Rocker Arms. Initial
timing set at 12 deg. BTDC, idle speed between 900 - 950 RPM. Results:
Very responsive and reliable power from 2200 to 6200 RPM. Soundbite is
through stock Exhaust manifolds and Exhaust system with the transverse
muffler, and without resonators.
480HP 55 chevy gasser 2
puting the 55 chevy gasser up at the shop..yes it has mufflers..its not
open headers!! its a 383 ported and polished.. msd... fenderwell headers
with dinomax race mufflers...3 speed with trans break...dana 44 rear end
with 4:10 gears (was 6:10's) high rise intake from the 60's with 2 holly
four's..high lift cam..around 450hp