I reckon it's an old Dolan Track Champ https://velospace.org/node/28597
If I remember right they had issues with the seat tube where an internal sleeve was needed for the seatpost and some frames were cracking, also those integrated seat clamps are prone for cracking. Honestly I'd avoid an alu frame with the paint stripped that's been left outside so long, especially with that type of seat clamp.
I wanted a nasty looking frame with nice parts, and this fit the bill, plus it's pretty historic, but I might just buy a nasty frame and new parts for it instead.
I reckon it's an old Dolan Track Champ
https://velospace.org/node/28597
If I remember right they had issues with the seat tube where an internal sleeve was needed for the seatpost and some frames were cracking, also those integrated seat clamps are prone for cracking. Honestly I'd avoid an alu frame with the paint stripped that's been left outside so long, especially with that type of seat clamp.