Rebuilding a 350 - part recommendations needed...
Well, I decided not to go with a crate motor for my `84 3/4 ton, as I just parted out another truck with a 4-bolt 350 that had not been previously rebuilt. I am going to take the block into the machine shop in the next few days to have it bored +.030" and honed (that's the easy part). I'm also going to have them turn the crank (needs it) and re-do a set of heads.
Next, I will need a rebuild kit. I have rebuilt a couple of engines in the past, but I never really used any performance parts - just stock rebuild kits. I want to make this engine sing, so it's going to get a mild cam and some other hi-performance internals. Here's some questions that I have...
The heads that came off the engine are 350 heads with a combustion chamber size of 76cc. Can I safely boost my compression ratio by running 305 heads with a smaller chamber? I have the set of 76 cc 350 heads and a set of 305 heads (don't know chamber size yet - checking tonight) on a 305 I've been keeping around for spare parts. I think the 350 was running somewhere around 8.5:1 compression before I took it apart, but it didn't have much power. Just a side note - are the intake / exhaust valves typically smaller on 305 heads???
What kind of +.030 pistons should I look for in a rebuild kit, dish type, flat top, or dome? I want to get around 300 HP out of the engine, yet I would like to keep the compression ratio low enough to be able to run 89 octane fuel - is this possible?
What kind of piston rings would be a better choice for durability and longevity of the engine? I know of at least 3 different types - steel, chrome-moly, and another kind I can't recall the name of right now.
What kind of cam, in terms of lift and duration, should I look for? I will be running a 650 CFM carb on the engine along with headers and 2.5" dual exhaust. I don't think that I want to go with a roller cam, but I might upgrade to roller rockers on the heads.
One last thing, who offers a good master rebuild kit with the parts I'll need at a reasonable price? There are some speed shops around town where I live - I'd just like to get some prices to compare.
Thanks again for your help!