found a cam in a box of stuff and it looks like its been ground from an original B cam. there is a number stamped on the sprocket end that reads 4D234. anyone got any ideas what this grind might be or who I could ask?

Clve Cams bought all of Wade cams stuff.
Clive may be able to tell you what you have.
Alternatively, stick it in a head on a block, dial it up relative to TDC and opening/closing of intakes/exhausts using a degree wheel.

_________________
Yep, i race a Datsun, and I drive a truck, sometimes I get confused, and then the truck goes fast, and the Datsun gets a lot of boxes shoved into it. AWW GEE

No luck with Clive. Might need to make up a degree wheel and have a measure. In saying that can anyone recommend a good cheap brand of degree wheel that suits an l series.

Make one youself - bit of cardboard, scissors, texta and a protractor.

Or download, print and stick one to a bit of cardboard. There are a few sites to download one from, have a search - I did this and it worked fine.

EDIT: Here you go, here's one http://www.tavia.com/free_degree_wheel.html

_________________
1970 ex Group A Rally P510
1971 P510
1972 180B SSS
1965 SP310 Fairlady
1966 SP311 Fairlady

My cam has marking at the sprocket end and I bought it from Baz @ Datsport