wildstang87

exactly like grey fox says "if your not having problems now, you wont have any with the new heads" period. to put rings in you have to pull the motor, to put heads on you dont, so if your going to do rings might as well do it all, especially with 120,000 miles. i say throw the heads on and when the time comes pull the motor and do the rebuild/stroker whichever.

fordguy17

aftermarket heads won't increase compression unless you have them milled.

92hatchLX

I know that I have to tear everything down to do them i've rebuilt two 350s. And there will be a slight compression raise on a car with that many miles and original heads. I'll show him this post.

Quik

you wont have a rise in compression if there isnt any leak. if the motor is sound the mileage isnt a factor

92hatchLX

It's a possibility with 140,000 miles. Not saying that there is one but there could be.

Quik

yes there is a possiblity but if the car isnt running poor chances are its not that big of a deal. buy those heads you want pus$y and go have fun

92hatchLX

lol, I WISH, someone wanna donate to the Daniel has a tight budget fund? All donations will go to a good cause

wildstang87

actually some manufacturers do offer 58cc heads, so that would definately raise the compression ratio. also if you have a cam with alot of overlap it will lower the static compression ratio due to bleed off during the overlap, all things you need to consider. i still say get the heads, and chunk them on.

Quik

since youre on a budget rock some stockers that have been ported and milled some, good springs,then get some larger valves put in them. figure about 500 bucks into them and youre set for now

wildstang87

$500 bucks in a set of heads wont get him any performance. a good port and polish is atleast $800 plus valves springs, retainers, and labor. i say go with some gt40cast iron, or some thumpers, the thumpers flow alot better than stock gt40s but cost a little more, i think around $800.