I have been tossing around the idea of swapping the cam in my '67 but there is one piece of info I don't have. I have no idea what the CR is. The things I do know are:

327
291 Heads
3.73 Rear
TH350 with a 2400 stall
Edelbrock RPM
Edlebrock 1405 Carb

The cam that's in it now only pulls about 12 inches of vacuum at idle in park (power brakes suffer a bit, but not much) and takes a bit of RPM to pull hard. I know nothing about the cam that's in it, which is one of the reasons for the swap

What I am looking for is some more vacuum and more torque down low. I was leaning towards an XE268.

How difficult is the selection without knowing the CR?

This car is a daily driver and I am not looking for something radical. Nice low end with decent vacuum.

[ 04-20-2003, 09:38 PM: Message edited by: CFunK ]

according to Camaro Restoration Guide, in 1967-68 stock smallblock 3917291 heads on a 327 had 63.31cc's(1.94,1.5) and on a 302 they had 64cc's(2.02,1.6)

Depending on how or even if your motor had been modified...(pistons,boring,milling) I'd say your 327 is between 9.7 and 10.0. Use the calculator in my signiture to play around with the numbers, you'll get an idea on how much variance there can be when changing different specs. I'd pull the heads and get them cc'd and then you'd be able to build it to the compression ratio you want. then you'd be able to check how far the pistons are in the hole and make sure your quench is correct by using the right head gasket ect ect...

It's pretty hard to pick a new cam if you don't know what the old one is or what your compression ratio is.

To do the job right, I would seriously consider pulling the heads and identifying the pistons (dish, flat top, dome, etc). Then measure deck height that way you can acurately calculate your compression ratio. Then we can get somewhere with picking a new cam.

Once you have the engine down to the point where you can swap the cam you really don't have much further to go to get the heads off away. Just exhaust and the heads themselves.

Just my opinion.