Cam

when puttin a cam in is there anything that will effect it cuz i have many people tellin me not to throw a new cam in a used motor even the man that doing my intake an carb work.... How true is this

Don't get what you mean, a new cam will effect many things. Selecting the right camshaft for your application is the toughest part.... Lots of manufacturers with lots of different grinds. The biggest horsepower gains are in the cam and heads, study and plan carefully before you make any purchases.....

what im tryin to say is that the motor would blow becuase of the new cam... the cam im going with is a comp that will work fine with the stock heads an jus intake an carb an headers an 3:73 gears for now.... the motor has about 70k on the dash an i jus wanted a strong daliy driver

an i would love to have that choppy sound but be able to drive my car anywhere.

Well, you would have to decide which is more important, the right sound or the right cam to make your car a good performing daily driver. Before changing the cam, it would be good to determine the condition of the rest of the engine, is the bottom end still tight? How's the compression on the cylinders? 70K isn't a lot of miles on a 305, but it's not worth investing money in an engine that has a cylinder or two with low compression, or the bottom end is just worn out from lack of proper oil changes. Also does the car have an automatic or manual tranny?

the car has a auto tranny in it an i have not went thru the whole motor to see but was going to make that my next move if its not im going with a 350 vortec out of a truck or something

Dave I gave him all that I did on my 305 and I did a conplete rebuild on my engine. He wants to install a comp cam like mine that is 218/224@.050 .462-.469 lobe sep. of 110. Without knowing what condition his engine is I told him check out the engine first because after 70,000 miles there's going to be some wear.

an im going to rebuild it before i throw the cam in it got to find a good rebuilder should i let them go top to bottom or jus the bottom end

if your compression is stable, then go ahead and do a cam swap, head wise, rip them apart, check the seats, have a fresh grind put on them and check the conditon of the valve guides. doesnt hurt to freshen them up, additional work is going to depend on the camshaft selection. have fun with it, good learning experience to see the gains you will receive with the cam swap and re ring.