Engine rebuilt with new rods rings shells etc

[thewatsonsmouts]

She won't run when hot but after ten fifteen miles . Almost like when I put my foot down even a little I have no acceleration hardly if any and missing

[MoleT-5R]

She won't run when hot but after ten fifteen miles . Almost like when I put my foot down even a little I have no acceleration hardly if any and missing

What else have you changed and are you sure the timing is set properly ?