i think im gona have to replace my 305 timing chain. im wondering can i go with a slightly bigger cam while im at it? can i just throw a bigger cam in and put her back together or will i have to do other upgrades to accept the bigger cam?

 

Depends on how much bigger of a cam your talking about. Valve springs are a necessary upgrade you will have to do if you put a cam in with around .440, .450 lift. Since you will be removing all the accessories anyway, a cam is a worthwhile upgrade. Changing the valve springs is also a good time to replace valve seals which usually cause smokey startups if their original. A lot of people like to run an lt1 cam as a cheap upgrade in roller 305s and 350s.

 

thanks.. i dont want to do anthing extreme just a little extra something while im digging around in there. my seals need replaced anyway i know. what would be the biggest cam i could go without having to replace alot of extras or throwing off the computer. id like to get just what i can get away with without rebuilding the engine or really hurting my gas milage..

 

Comp cams makes a 249h that is claimed to be computer friendly. It is mild but would be a decent upgrade over your stock cam. You would get away with not changing valve springs. A few other cams I would recommend would be an l98 or g92 cam. Obviously a tune would help increase performance but i do not think its necessary to make the car run decent. Whatever cam you choose it has to be 112 degrees lobe separation or higher to work with the computer.

 

than you for the intel. i will check out the cams you mentioned. the more ive sat here and thought about it im considering having the heads reworked while im at it. i know my valve seals leak and cant justify going through the trouble of replacing them without reworking the heads. im curious, do you know if i can get that cam out and new one in without pulling engine? just remove the radiator etc? even the nose if nessecary..

 

if your gonna rebuild the heads you might as well upgrade to at least vortec heads .

 

okay.. this is just so i can find this info when i delete my other account that i didnt realize i had til now.. haahaahaa!!