Thought I would put this out on a new thread to get some input from the experts. This engine is from the Cutlass I am going through in the major build section. Originally I was just going to pull it for a regasket and detail. At least that what I told my wife. One of the biggest details it needed was a little more compression. Took it to the builder yesterday and the plan is to bore it .o30 and fit witha new set of flat tops. Heads are #6's and cc'ed @ 64. Figure to have about 10:1 when done. Heads are being treated to a competition valve job. Already have a eldlebrock performer with ebrock 750 carb. Decks will be squared and torque plate honed. I am running the stock 3:08 gears and torque converter but hope to regear to 3:43. Car will be for fun on the street. Has power brakes and a/c. Any recommendations on Cam selection and other tips to get the most out of this combo.

 

I have a similar 355 Olds and am running the Vodoo 60803 227/233 .510/.522 cam with an RPM intake, 770 Street Avenger carb, 3.73 gears, 2600 stall, 1 5/8" shorty headers. Cars runs great, good vacuum, starts right up, great throttle response.

 

If you're using the true flat tops then you'll have over 10.5:1, not sure I'd do that with iron heads and todays gas.

And the either way the RPM would be a better choice than the standard Performer.

Once it's all configured I'd recommend an Erson TQ40, it's 220/228@.050 with .504 lift on both. The perfect cam for old iron headed American V-8's.

 

Ditch the performer, and run the performer rpm.

Be sure to blend the bowls on the heads, or the valve job will be a waste in my opinion.

 

http://www.kb-silvolite.com/calc. If you go here and plug in all your build parameters you'll
see where you'll be approximately with your static and dynamic compression .A good tool to use before you start the build.From what research I've been doing you need your dynamic ratio below 8:1 to run today's gas . I'm sure the true motor builders on here will chime in with their thoughts on the subject , then you can pick a cam to compliment .JMO

 

I may end up upgrading to the RPM but performer came on the car and is bought and paid for. Since this was originally going to be a regasket that has turned into a full on build the budget is blown. Will be an easy bolt on later.

 

Checked in with the builder today on what the heads actually CC'ed as I was using standard tech info of 64 cc''s. They were at 66 cc''s before cleanup and valve job so it only gets better as the work is done. IE: CR will go down some. Also talked w/ Smitty from MJ Performance who can make gaskets to fit any request. He told me not to worry about it up to 10.5:1 with iron heads should not be a problem. That validated what my engine guy is saying. I will sleep better tonight