1994 351 roller engine question about the pistons

[tubbed85]

I have a 1994 351 roller block that came out of a E 350 cube van. I am going to add some small turbos it. The piston has 425p cast into it & I can't find any info on this. can or does somebody know if these can take some boost? These pistons take the metric rings if that helps. Block casting #F4TE 6015 AA 1 Rod # F2TE AA
Casting # on piston:
1) 425p
2) 80008B
3)AIOC 425P
Thanks in advanced.

 

[Fryguy302]

Those are hypereutectic pistons, probably the ones with the big bathtub type dish in them? Many have made 9 second power with those, but they will break if you rattle them.

 

[tubbed85]

Yes, They do have the big bath tub in them. They look nice & measure close to stock dims. The worst being about a .001 out.
Thanks for the fast reply.