i got an 83 chevy berlineta with the 305 carburated 4bbl im thinking of swaping it with a 350 carburated... does any one know what i need to do this or where i can get one ready to go with all the smog stuff or does any of the 305 parts go with the 350.... let me know please... or can i get at least 300hp out of my 305 ...

 

Door #1: Check out the 305 thread on the FAQ forum. The mods there will get 300 HP (gross flywheel - not the same rating that puts yours at 145 hp) out of a 305. It can be done in an emissions-legal manner if you like.

Door #2: Put the carbureted 350 in your car with whatever equipment/carb it has on it now. It really depends on the particular 350 you have whether or not that will work well. You can figure on needing a good share of the 305 mods behind Door #1 in order to get to 300 HP, though. Especially exhaust and air cleaner. But a 300 HP 350 is a lot more mild-mannered than a 300 HP 305 for "normal" driving.

Door #3: Put the 350 under your 305 equipment. That's basically what I did. It really depends on the particular 350 you have whether or not that will work well. You can figure on needing a good share of the 305 mods behind Door #1 in order to get to 300 HP, though. Especially exhaust and air cleaner. But a 300 HP 350 is a lot more mild-mannered than a 300 HP 305 for "normal" driving.

So, provide some more specifics about the 350 you're considering, and we can add to the above. Since you're starting with an '83 305, the 350 route will most likely be more productive.

 

ive decided to stik with the 305 becaus i just droped 1300 in it to replace some pistons and smog stuff.. but where can i go to get some parts for my 305 ive looked at summit and jegs and not to much to chose from...oh and im planing on changing out my suspincion what do you recomend and whats the fatest rim and tires that ican fit on it to give it a mean stance but good ride... any suggestions will help..

 

305 or 350 doesn't matter, as far as the cam goes. You just need to make sure it's the right type, and if this is an original '83 305, it's the less expensive flat tappet hydraulic type. How big of one you can run depends upon what's been done to the heads and how much torque converter stall you have. A Comp Cams XE256 is a good choice for a decent upgrade, but probably won't get you over the 300 HP mark. What do you have for exhaust, stock? You really need headers and a complete high-flow system on-back. Stock 305 heads are okay, but with a little bit of work are great. Stock valve springs are horrible, figure on new valve springs and retainers to go with whatever cam you end up getting.

Check out the other forums available for your suspension and wheel/tire questions.

 

hey i just got my camaro back from the shop and im stiking with the 305 but i need some sites where i can get some performance parts for it oh and most importantly i need some help on buying a air pump diverter valve for the dang thing to pass smoge.. any help on where i can find one...

 

Performance parts - Summit Racing - High Performance Car and Truck Parts | 800-230-3030 , JEGS High Performance - Car, Truck, Street, and Drag Racing Performance Parts , etc.

Diverter valve - www.partsamerica.com , or most any parts store. The parts store may have to order it, but it's available.