jsimmonstx

A cleveland is going to be heavier unless you go with aluminum heads. Are you sure you want to go that route?

klferguson26

Your better off building the Windsor...more available parts, more adaptability, stroker options and cost effective. Bang for your buck, the Windsor will out perform.

pascal

Clevelands were consider big blocks by some folks due to the fact that they delivered big block power but it's still a 351cu...
Back in the days, the best 351C was the one built by the Aussies.
They used it in their Ford Falcon XB/GT (Mad Max car) with their own special heads which was a cross between the 2V and 4V scenario.
Later on, Edelbrock made a nice aluminum set of heads similar to the Australian ones but in the end, a stroked Windsor like the 408 or 427 is the preferred way to go.

Cleveland blocks are heavy and have a tendency to eat cams due to poor oil delivery but that mill would always outdo the Windsor no matter what. The torque alone was an obvious difference.
And as a History note, the 71 Boss 351c was the fastest Mustang ever produced until the 2000 Cobra R...

fastbackford351

My heart says Cleveland but my head says Windsor. Ease of installation into 1st gen Mustangs and accessories is a slam dunk in favor of the Windsor but man, I have seen some screaming Clevelands and the uniqueness might be worth the price of admission if that's important to you.