out for spring
in my 74vette i have...a gmpp 350 short block,
edelbrock performer rpm cam
gmpp vortec heads
edelbrock performer rpm air gap
holley 600 street avenger carb
Summit rocker arms
converted heads to screw in studs
hooker super comp long tube header going back to pair of flow master 40 series
B&M 2600 stall
rebuild 400 turbo
4.56 gears
cam specs are
Basic Operating RPM Range 1,500-6,500
Intake Duration at 050 inch Lift 234
Exhaust Duration at 050 inch Lift 244
Duration at 050 inch Lift 234 int./244 exh.
Advertised Intake Duration 308
Advertised Exhaust Duration 318
Advertised Duration 308 int./318 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.488 in.
Cylinder Head Style Assembled
Cylinder Head Material Cast iron
Cylinder Head Finish Natural
Combustion Chamber Volume (cc) 64
CNC-Machined Combustion Chamber No
Intake Runner Volume (cc) 170cc
I had this engine built last fall by local shop and it never seemed to have have power at all so i went and got some new scorpian full roller rocker arms from summit. but for some reason i cant seem to set them correctly started at 8am this morning and watched every youtube video as well as searched forum but nothing seems to work. Just me by self without helper so it takes a little more time. All issues seem to be on passenger side.
I will bump the engine a litle at a time until vale just starts to go down and i will tighten the one next to it by SLOWLY tightening the nut until i can no longer spin the push rod. then i will turn the nut another 1/2 turn(as recomended by edelbrock - i called them). Then i will tighten the allen screw all the way down. I will repaeat this for each valve when done i leave a sheet of cardboard in front of heads. upon startup the clicking sound is very loud and pronounced i have tried to bump the nut on the rocker arm to quite it down but to no success(maybe 1/16 to 1/8 turn)......
I guess my question is since i have repeated multiple this times to the same result did i smoke the engine and my $5000?
While running if the rocker is quiet, back off the nut until it clacks tighten until quiet add a half turn. If the rockers is clacking tighten until it stops and add a half turn. Continue through the rest of them. As you move along it sould become more quiet.
It is a Hydraulic cam and lifters correct? Screw in studs?
I'm not sure about your cam profile, That is a long power range for some reason, and it begins early just off idle.
When adjusting, you want to move the pushrod up and down. Turn the adjustment nut until there is no more vertical movement, then tighten it 1/2 to 3/4 turn and lock it down.





If you would like to set them with the motor off, here is a great site:
http://www.centuryperformance.com/ad...h-spg-149.html








