I just tore my 69 318 down and found what appears to be factory pistons without valve reliefs. I haven't seen this before. The engine has never been apart before as far as I can tell.
Are these factory pistons or aftermarket?
Can anyone ID these SBM rockers?
They are made of steel. They have no bushing. They also have a rather unique shouldered adjuster lock-nut.
Thanks
Dave
Hi
I have a mint 68 FB with 318. I also have a '70 340 and a '77 360.
The 318 is stock.
The 340 has a set of 10.5 forged speed pro pistons .030 over
Bores are good
has spun rod bearing, so needs crank welded and rods resized.
The 360 has to be bored .040 to clean up the bores...