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guess i forgot to mention, that somewhere along the lines someone swaped a 351-W into the truck (I have 2 W, along with 2 M blocks already, and I had 1 Cleavland, so I know the difference lol)
The Zf-5 will go behind a 351m/400/460. Not sure if the made them for small blocks.
There are 3 different bellhousing patterns that the ZF5 uses. The 351M/400/429/460 "big block" pattern , A 6.9/7.3 IDI & 7.3 Powerstroke diesel pattern , & the 240/300/302/351W "small block" pattern.
Joes right. I currently have a ZF5 bolted to a small block and I am loving it. I have that low first gear for when i need to tow and gained OD for improved mileage, but be prepared to spend some money. Those ZF5s are fetching some serious coin around me