Carb and FI Cam differences (M130 280S/SE)

[senorunimog]

Does anyone know if there are any differences between the carbureted and fuel injected cams in M130 motors? Timing, Lift etc....

The reason I ask is I have a 1971 280SE that has decided to eat its camshaft.... I have a spare cam (and accompanying towers) from a carbureted motor. Am I going to regret switching these?

-Eric

[300SDog]

Worn out rockers is usually what eats the lobes, check the rockers for core steel wearing through the hardened surfaces. Dunno about camshaft differences.

[mercmad6.3]

You need to either get hold of the Factory workshop manual,which will have the cam specs ,or ring the classic center in Irvine(Cal.) and get an answer,The cams have a number stamped on the rear end to signify which grind they have,and yes they are different.the EFI cam will have a longer duration and closer lobe center angles to take advantage of the different fuel delivery characteristics.

[cth350]

To switch the cam, you need to remove most of the head bolts. I've never done it with success and have turned the job into a valve job too often.

I just got back from a week in LA and found the ecology yard in San Diego on Heritage Rd (805S -> 905E -> Left on Heritage) had a nice 280se, but there are no plugs in the motor. I didn't remove the valve cover to look at the cam. I suspect that it's "just fine".

-CTH