ok so with my engine rebuild coming up iv already started to order some parts and i was wondering what kind of pistons would be good to use and im staying n/a if that helps any thx for the help

 

Again this depends on your goal kinda like the camshaft. It also depends on how the motor is. If its allready been bored over or if it needs to be bored over to clean up the walls then your gonna need to get larger then stock size pistons. Before you order anything you should take the motor out send it to a machine shop have them clean it and check it out they can tell you everthing you need to know like if its been bored out before etc..

Also since your gonna stay n/a do you want to run higher compression then stock to gain more power? You could run some domed pistons and get that compression up it the upper 10:1 rang and still rock pump gas and make more power. But really befor eyou get ahead of yourself the motor needs to be taken out and apart and sent to a machine shop. Building a motor takes time and it will pay off if you do it right. Dont rush into buying parts soo soon.

Oh and most shops charge 100-250bucks for this so its not exspensive at all.

 

just buy a crate motor and a FMS Z tranny, have a good shop put a set of brand name gears in your rear end (3.55's) and call it done... k?

 

i know i have to pull the engine apart to know what size of pistons to order but i want to know how much gain and what type of pistons i should order like dome shaped or dish shaped how much of a difference is there between the two and also whats the difference in the piston rings

 

crate motor is a waste of money...

you should definately get a set of heads... you can go to a junk yard and nab some iron gt40 heads off an explorer for relatively cheap... just an idea...

unless you want something that will flow alot better...

 

the ideal piston shape varies according to head design. There are a lot of considerations. To find your ideal piston you need to decide on a budgetary constraint, and if you're going to use a power adder or not and what sort of fuel you want to use.

If you're looking for a street motor with decent emissions and 87 octane gas then you'll probably want to stay at 9-9.5:1 compression. You could easily slap a 200 dollar set of Kieth Black Hypereutectics in there and live a long happy life without blowers or nitrous in heavy doses. If you are down for higher fuel costs and more power then look into somethign like a 10.5:1 combo. If you don't need to buy forged pistons then save the money and don't. If you do, then definitely spend the money.

For heads there are a zillion out there. Stay with something street oriented like a set of AFR185's or GT40's unless you're building a race car.

The domes and dishes and flat tops are part of the design of each piston that helps to set the compression ratio and the quench effect. It also has an effect on piston to valve clearance which will define how radical you can get your valve lift (you don't need to get nuts with that).

An easier way to attack it is to define the goal, then build toward it with parts that all work together. Start with your heads since head choice affects pretty much every other option. After you pick a set of heads we'll come back to the cam, then to the valves, then to the pistons. This is all assuming you're sticking with a 302/306 and not a stroker motor.

 

as for the heads im going with 351 heads and i am sticking with the 302

 

cleveland or windsor heads?

You could put the cleveland heads on the windsor block and make a BOSS motor. Intakes are available for that. It's a well known way to make some nice power.

 

intake? umm i staying carb'd the heads are windsor

 

sounds like a job for vic edelbrock and his merry men.

 

so back to the pistons what would u recomend and as far as cams go this is what im ordering
http://store.summitracing.com/partde...3&autoview=sku

 

Before you get that cam, have you looked into getting a cam ground to match what you are wanting this motor to do in the long run? I am looking at building a 351 stroker, eventually, and everyone I have talked to said don't buy a cam off the shelf. Get one that is ground to your motor. Just a suggestion. Good luck with whatever you decide.