55' Chevy cast metal to plastic glue

I’m building a 55’ Chey pickup. I did not install the stock motor, but instead, I put in a 350. It’s one of those cast metal after market parts. My question is, what is the best adhesive/glue to use to secure the cast metal motor to the plastic chassis? I used zap-a-dap stuff and it doesn’t hold very well .

5 minute epoxy would be my go-to for anything that large made of different materials.

Gene Beaird,
Pearland, Texas

Ditto on the 5 min. epoxy.

Jim [cptn]

Thank you, gentlemen.

I do say sir !

besides 5-Min Epoxy there is also a Good Super Glue ( Cyanoacrylate )