[matteas]

Pulled these out of a 83 spider parts car that was advertised as having "11 mm cams"
Any idea what they are? Might be stock for all I know.

 

[Alfar7]

From the look of the lobe and the much larger BC on the intake cam they well be stock Motronic cams. Head may be Motronic as the Intake wont fit in earlier heads.

 

[matteas]

Thanks Richard
I'm thinking about using this exhaust cam in my 74 Spica GTV as an improvement over stock and a "euro cam" for the intake side.
Car will also have motronic pistons/liners.
Anyway to verify this is a motronic exhaust cam?
There are no markings except noted in the pic.

 

[spiderserie4]

this guy had "309" marking on a pair of his cams
Cam ID help?

 

[matteas]

Thanks for that.
I measured the lift and looks like a 10.5 mm lift cam.

 

[Alfar7]

I don`t think the Motronic Exh was 10.5mm. More like 10.0mm.

 

[matteas]

I measured these cams hoping that would help in identifying them.

The exhaust cam has a base circle of 26.543 mm and lobe of 37.084 mm
giving a lift of 10.541 mm.

Intake cam base circle of 26.645 mm and lobe 37.211 mm giving a lift lift of 10.56 mm

So looks like 10.5 mm lift cams?

I'm guessing these are Centerline 10.5+ cams??

exhaust cam marking:

 

[Alfar7]

Call Centerline and ask

 

[matteas]

Good idea!
I did and was notified they might be 11mm L-jetronic cams which makes sense since they came out of an 83 Spider.
Is duration known for these?
The vendor could only tell me they were 11mm lift.