cam base circle for a 3400 motor

[StudlyCamaro]

anyone know what the base circle is???

[SappySE107]

what it is or what the diameter is?

[StudlyCamaro]

diameter, sorry :P

[StudlyCamaro]

anybody?

[bszopi]

Camshaft
Lobe Lift
- Int and Exh: 6.9263 mm (.2727 in)
Journal Diameter: 47.45 -47.48mm
Bearing Bore Diameter -Front and Rear: 51.03 - 51.08 mm
Bearing Bore Dia.- Middle #2 and #3: 50.77 - 50.82 mm
Bearing I.D. : 47.523 - 47.549 mm
Journal Clearance: .026 - .101 mm
Journal Runout - Max: .025 mm


Directly off of the site info...

[SappySE107]

That isnt the base circle diameter though brad.

[RacerX11]

How accurate do you need? I could run out and measure one with a dial caliper. If you need it more accurate, I would need to dig out my micrometer set.

Marty

[bszopi]

Hmm... good point. I wonder if it's on my cam spec card. I'll have to see... and it isn't.

[bszopi]

Hmm... good point. I wonder if it's on my cam spec card. Nope.

[RacerX11]

I measured my '98 3100 cam with a dial caliper, and came up with a lobe base circle diameter of 32.69mm, and lobe height of 39.67mm, which comes out to 6.98mm lift, close to Brad's factory specs.

Marty

[StudlyCamaro]

thank ya