Re: The differance between winsor & clevland
The Windsor was first released in the XR GT Falcon in the 289 CID version (1967). It was previously a 260 CID, compact Fairlane I believe. It was then stroked to 302 CID for the XT GT. After this, a whole new engine, the 351 Windsor was used for the XW GT and XW GTHO phase I. You could also get 302 windsor's in XW/Y falcon's/Fairmonts as well as ZA/B/C/D Fairlanes.
The main way of telling them apart is that the Windsor has a 60 degree V configuration and the Cleveland has the 90 degree V configuration (clevelands are wider).
For the XW GTHO phase II's, XY GT's and XY GTHO Falcons, the 351 cleveland was introduced but the 302 stayed as a windsor until the end of production of the XY Falcons and ZD Fairlanes. When the XA Falcon came out they all had clevelands whether it be 302 or 351.
With the 302/351 cleveland, the block is the same. The only differences are of the crank, rods and pistons as well as the heads (302's had closed chamber and 351's had open chamber heads).
With the 289/302 windsor, the block is the same where as the 351 windsor is a different block altogether. However, all windsor's still had the 60 degree V. The cleveland was dropped in 1984 and after a long time in the wilderness, Ford re-released the windsor in the EB Falcon circa 1991/2. The windsor has once again been dropped (2002) for the modular engine which is a 90 degree V configuration.