What is the difference between a blue hp500 carbed motor and a blue 525 besides the intakes and the obvious?

Can you bolt a 525 intake on an hp 500 without a lot of problems or headaches?

I think the 525 has a little bit bigger cam but not sure about the heads?

Will the 525 intake flow better then the 454/502 efi intakes?

525 has Edelbrock heads.
525 intake is very different than the 454/502EFI.

HP500 Carb (blue) can be either a 502 or a 540 (Bulldog) and probably is a MkIV or Gen 5 block. The 525 is a Gen 6 block.

Cams are similar, but not identical (aside from the thrust bearing stuff).

will the 525 intake bolt up to the hp 500 carb heads?

I have the 500 carb motor just sitting in the shop but I really want to go injected since I am going to use it at different elevations a lot this year.

anyone know what heads are on an HP500? are they 088s

They are Aluminum Edelbrock heads, almost identical to the Edelbrock marine rectangle port heads except valve stem dia. is different and no merucry casting on them.