camshaft advice

[canadian duster]

i'm planning a project for a 75 duster with a 6-71 blower on a 360. plan is to run low boost for some time until I can afford a full forged rebuild.

I'm looking for advice for a camshaft in this car. ive been doing lots of reading and it sounds like a 235 at .50 duration (280 advertised) and 112 lobe center. (based on dyer's)

I currently possess a performer rpm cam that has 234/244 @.50, 112 lobe separation, 107 center line, and 308/318 advertised.

My confusion comes with reading the lobe center vs lobe separation and center line.

Thanks

 

[Marcohotrod]

I say around 230* intake/240* exhaust at .050" (with around 280*/290* advertised) and 112*-114* lobe centers (also known as lobe separation) installed at around 108*-110* intake centerline is where U want to be. the rpm cam is machined with the keyway to come out installed at around 107* - U install it and check where it is at with a degree wheel, and if needed move it with an offset key etc. It is up to U if the rpm cam is close enough to what others suggest.

 

[RustyRatRod]

Lobe center and lobe separation is the same. It is the permanent angle ground into the camshaft. It is the angle between the intake and exhaust lope on the same cylinder. If a camshaft has a 112* Lobe separation, that simply means that the intake and exhaust lobes are 112* apart from their peaks.