What cam is this

[BRI MK1]

Hi i have a cam stamped 4F 72 but it is not very clear it is a pin drive and has three rings on it anyone know what it is cheers Brian.

[Jack of all trades]

sounds like an OE SPI cam to me LGC10230

[Cables]

I wouldn't have thought a spi cam would be pin drive

[Jack of all trades]

A 731 has 3 rings as well

[BRI MK1]

This cam did come out of a 1275 S engine but did not have it running i think it maybe a mild cam as the rest of the engine was nothing special.

[Giannoutsos]

This cam did come out of a 1275 S engine but did not have it running i think it maybe a mild cam as the rest of the engine was nothing special.

Hi BRI,
looks like ab innocenti 1300 cam, pretty mild

[BRI MK1]

Thanks for the replies i think it could be innocenti cam.

[Spider]

Really, it could be anything and to work from markings on the Cam these days is so fraught with a good chance of getting it very wrong.

The markings on the cam might tell you what it was, not what it now is nor how worn it maybe.

Measure it. It's not at all hard, though it may take an hour or so. All you need is a Dial Gauge (I'd suggest an Imperial one), I've seen these from about 20 quid for one that is well good enough for this and most other jobs that you'd use it for in engine assembly. The other item is a Protractor, which you can buy an engine building one for about 5 or so quid or get one from a stationary suppliers, or for that matter, I'm sure you'd find one on the internet you could print off and past to something suitable.

In any case, you'll need these items to dial the cam in when you build the engine.