Hi all,

I have some questions regarding a 272 stroker I’m hoping you might be able to help answer.

What do I have to do to stroke a 272? I’ve been looking at Mummert’s CR-312-BU rods. I know I’d have to get the crank offset ground, but I’m wondering if the piston to valve clearance will be ok using the current piston.

Bit of a back story-

Engine- (rebuilt less than 500km or 800mi)
- 20thou over bore with forged pistons (all the supplier had)
- block deck machined so pistons are flat to deck
- eczG heads with all new valve train, valve guides oversized intake valves and hardened seats, positive valve stem seals, 1.54 rockers.
- B manifold modified to dual oval opening
- Mummert Y270S cam
- MSD distributor

So this engine has less than 800mi on it and I’ve developed a ticking noise that increases with rpm. I initially suspected I’d wiped a lobe on the cam but now I’m thinking I may have done some bottom end damage due to oil starvation from hard braking (I don’t think I have my sump baffles low enough to stop oil sloshing) and the oil pressure light came on a few times.

I haven’t pulled the pan to have a look because I’ve got a few other projects in the go and don’t have the space, and if I’m going to pull the engine out (easiest for me due to space and time) I want to do some work to it (mainly for enjoyment).

Now, I know the obvious solution to more cubes is to use a 292 or 312, but the 272 is what I have and I’ve already spent the time and money on it, plus 292 aren’t as common here in Aus compared to the US, so I’m sticking to what I’ve got.

I know we all like pictures so here are a few.










Thanks, Dennis.

56 F100 - 272 Y Block
NSW, Australia.