Might be buying a 04 mach 1 have questions

[southport2014]

Going to look at a Mach 1 in a few days had around 100k miles . Owner says engine has been rebuild with all forged internals and it’s a stroker 5.1 now . He says it has a custom .024 overbore pistons and compression is 11:1 how can I veryify this ? Is there such thing as a 5.1 stroker? Would I be able to boost the motor later down the road ? And how strong should the motor be if all this is true he says the pistons are je custom pistons Manley rods and scat crank

 

[Roots-type]

Ask for documentation, i.e. receipts.

11:1 sounds more like an n/a build. I wouldn't throw much boost at it unless I was going to feed it e85 or a can of torco with each tank.

Edit- From a quick search it looks like a 5.1 is possible.

 

[DSG2003Mach1]

a motor like that I would wanna know who built it, thats taking it about to the max as far as I know.

As mentioned 11:1 is NA compression unless youre gonna run around on E85 or other race fuel

 

[Nightmare90gt]

so mine has a 4.75 stroker kit bored 20 over which would make it a 4.77L if it correct. sounds like he went with flat top pistons i wouldn't run more then 8lbs of boost at least thats my plan but i already have most of the fuel supporting mods. sounds like he purchased a 5.0l stroker kit i would ask for receipts if he can't provide any might be able to pull a spark plug and look at the piston top it should have arrows and be shinny depending on the mileage. receipts are the best way to know they purchased the parts.