Maniacmechanic1
solid fixture here in the forum
Me.
I am not sure what Edelbrock is using for Lifters exact Source.Right she is back on the road...
Engine ran fine just after startup.
Small test drive and than the rocker rattle started again.
I recon that after setting them staticaly .
( rattle after short while) than setting them twice running .
And then statically again....
The tappets are hydraulic and new ( edelbrock)
But no new rockers and studs , which I have now just bought new....
The electric gremlins are sorted.
Although the quality of some " new " stuff is ver very poor....
I am sure you can machine new Rocker Studs.Ok so we measured the 3/8 unf rocker studs .
Od: 0.364" on the small ( worn ) diameter.
Should be at least o.371".
This with worn nuts ....
Anyway since we will have the el Camino dyno tested on Wednesday ( and the studs seem not to be obtainable ) we will machine new studs ourselves to much closer clearances!
Ok , I had forgotten about the possibility of heat treatment.I am sure you can machine new Rocker Studs.
One big problem though.
The factory Rocker Studs on all SBC & BBC and Pontiac V8 Were Carburized Heat Treated.
I recall this for a fact.
Carburized Heat treat is done in special heat treat oven and Cyanide Tablets 100% pure are also placed inside the oven with the fresh manufactured rocker studs.
Fumes given off and dust from Cyanide will Kill you and students.
Hi grumphyswell? was that what you were hoping for/ was there any major issues you need resolved
have the problems you had earlier been mostly resolved?
the HP & torque curve lines don,t look to be crossing at about 5252 rpm, ?????
https://www.motorauthority.com/news/1115177_why-do-horsepower-and-torque-cross-at-5252-rpm
https://www.roadandtrack.com/car-culture/a15839774/why-do-horsepower-and-torque-cross-at-5252-rpm/
One horsepower is equal to 33,000 foot-pounds of work per minute.
Add in the equations relating to torque and velocity,
and you'll find that horsepower always equals torque multiplied by rpm, divided by 5,252.