Should i get more hp with flattop psitons?

Do you seriously have friends? You do not treat people this way. Mabey your always in a bad mood? i dont know. I have no problem with the funny comments like "Oh...you have a car?" But once you start calling people dumb for asking questions and calling their thread retarded, thats when you become the *******.

You probably already know this but i began understanding motors about 5 months ago, and i still am continuing to learn. This does not give you the right to critisize me. You havent known me long enough to critisize me. I'm here to learn, not to get S*@& from you. This isnt the mustang forums, if you want to be this way, i suggest you leave.

Thank you for the information you have provided. It was really helpful and i hope to learn more from you in the future, hopefully you will be a little less of an ass in the future.:Handshake

 

maybe he is having a bad day

 

Then he has a ALOT!

 

I have built a few 5.0's but most were mostly stock. In my way of thinking I agree with one of the above posters that you cannot just look at what pistons or cam you want. You have to look at the whole picture. 1st I would think you should decide what you want out of the car. Drag race only? street/strip? Mostly street but want it pretty strong? Building a great running engine is like cooking a great tasting steak. All of the ingredients have to work together.
Gears? OD or not? What RPM are you wanting? What type of gas are you wanting to run? Want it to be street friendly and not have to run a high stall converter? Compression ratio is just one part of the whole. Everything has to work together.
I remember back in high school, many years ago. So kid would come to shop class on Monday morning with his little small block Chuvy hitting a big lick. He had put what back then was called a 3/4 cam in over the weekend. He would get out front of the school in the afternoon and do a burnout and take off with the car just blowing black smoke out the tail pipe and spitting and stuttering. lol Probably had a 750 Holley on it also. Thing was slower than a stock 350 but it sure made a great sound when at idle. lol
clint

 

Justin - I would suggest you buy a book or two to get yourself some basic knowledge on the small block ford. A good automotive reference library is a nice thing to have and money/time invested in knowledge almost always provides a positive return on your investment.

Here are a couple of options:
[ame="http://www.amazon.com/How-Rebuild-Small-Block-Ford-Engines/dp/0912656891/ref=pd_bxgy_b_img_b"]Amazon.com: How to Rebuild Small-Block Ford Engines (0075478568918): Tom Monroe: Books[/ame]
[ame="http://www.amazon.com/Windsor-Small-Block-Performance-Isaac-Martin/dp/1557883238?tag=dogpile-20"]Amazon.com: Ford Windsor Small-Block Performance (0075478013234): Isaac Martin: Books[/ame]

 

I know of these, but i dont know if they will give me the answer i was asking, the question i was deaply trying to ask was

On a stock 302 roller motor would flat top pistons give me more hp

I dont think the books would say anything about the rollermotor but i could be wrong. Ill be sure to buy one of these books one day, thanks for posting them

 

Go here:
http://sbftech.com/index.php
and do some reading....
Someone has tried to give you very good advice, maybe you've noticed that a few of the others, that know the answer to your questions, avoid answering them.

Google, can be useful also....

 

Justin... are you just trying to find your best bang for the buck for a motor, or just trying to learn?

If your trying to make a motor faster.. I'd suggest finding a spare 302 and save and buy what you can and then put it together. Tearing a motor down just to swap to a flat top really isn't worth it. Now, just a cam swap is easier and could be more beneficial.

Personally, just for a first "hot rod" motor I'd find a roller motor, swap the cam to a slightly bigger one, find a good intake, a good carb, set of headers and call it good.

I don't hang out much here anymore due to getting tired of some of the people here, but I try to help when I can. Seems things aren't really any better than when I quit coming around here, so I may just go back to lurking

 

I dont know what i did to piss everyone off but i'm sorry, i'm trying to get info on my engine build that im doing in 5 days. Do i really seem like an @ss by saying thankyou to everyone for helping me? I would hope that people would interperate that i dont know if the books would mention roller motors or i would grab one.


The story is that my motor has gone to hell so i figured i would swap it with the one in the garage.

The garage motor i had gotten in a trade, its a roller motor with new bearings and came with 7 out of 8 pistons.

The pistons in the roller motor were stock but not flat top pistons. They look like the pistons on the first page without the valve relief.

I am really just wondering what pistons should i use on a stock roller motor with e7 heads. Should i use the pistons in my car now (flat tops) or should i find one of the pistons im missing that came with the roller motor (shown of first page)

I am listening to everyone. Yes, everything has to work together. I know. Just want to know if i should go flat top or not. Will it give a stock roller motor more power. I have my answer unless someone wants to change my mind.


Thanks for the site dave, your help is appreciated. Google is my enemy, i can never seem to find anything relevant. If i do, its probably a little bit of both (kind of like alphabet cams, yes, no, mabey so.)


Mabey i should stop comming here, Almost everyone seems like they have nothing else to do but B#T&C at everyone else.

 

You've gotten some good info in this thead, but everyone has missed THE most important thing in picking pistons for a 302. That one thing is the compression or pin height. Replacement flat topped (with 4 valve reliefs( or 2) is what you're really looking for here) are not all the same. The compression or pin height varies from 1.585 to 1.620, that .035 difference translates to about 8 ccs added to the chamber volume (if you pick the shorter piston). You want as close to a zero deck as possible, that means you want as close to a 1.620 pin height as possible. A 1.585 piston with a 64 cc head isn't going to get you a 9 to 1 ratio. And pay no attention to those you think are "picking" on you. There are no stupid questions. :Handshake There ARE lots of stupid answers though. You will learn nothing by not asking questions.

 

Buy a book,read a magazine and educate yourself. Nothing wrong with asking for opinions but it would help if you understood the answer.

 

just like my dad says"if you don't know, ask a question."do not attempt to do something without knowledge.

 

Look...don"t take it as everyone just hammering you just to be doing it...and if you want to stop coming here, that's your choice...you've been given more than enough direction in this thread to get you where you need to be.

Personally...I don't know the first thing about you, but I suspect you're 16 or 17 years old and trying to scrape a first or second car together however you can. Nothing wrong with that..most every single one of us have been there and done that. The thing that I've noticed is that you tend to ask the same questions over and over until you finally get the answer you wanted to hear in the first place. Nothing wrong with that either...several of us have tried that same approach over the years with mixed results lol. In the end...the right way...and most often, the most economical way (notice I didn't say the cheapest), was the way most of the older guys recommended in the first place. The trick is to learn from OUR mistakes, so you don't have to learn from yours! Remember...EXPERIENCE IS WHAT YOU GET WHEN YOU DON'T GET WHAT YOU WANTED!!!! and there are a lot of us on here with a bunch of d*mn experience lol.

Don't you live close to Bowling Green? Hang out some at Beech Bend...find some of these guys running Mustangs and other Fords and look and listen to what they do. Doesn't matter if they're not running a Mav...the engines are the same. These are car guys, and they will help you, if you let them. Some of em actually like taking the younger guys under wing and trying to pass on what they've learned. They're a great source for parts, and more importantly, CONNECTIONS! If they like you, they'll let you into their network...they tend to know the other guys who like the same things...that translates to more parts options, advice, etc...much like this forum...with this exception...they have to like you

If you've read this far, pay close attention to this next part...! Just don't PESTER them with silly crap! Ask them legitimate questions...even if you don't like their answers as it pertains to your situation. If they tell you something that goes against what you think, or have heard from someone else...just ask them why that works...and listen to what they say. AND BE RESPECTFUL! If you take a look at SD's sig...and see Ultra Stang Champion 2 separate years...that should immediately translate to you as "this guy know's his S**t!" And quite frankly, you haven't earned the right to call him a, (I'm going to be politically correct here for a moment) grumpy old man.

Try not to come across as someone who thinks he knows what he's talking about. (ie...Know It All) Some of your other posts give insight into what I'm talking about...like the one where you asked if you were annoying...hmmm that says to me that either someone has said something to you to indicate that...or you suspect it yourself. Trust that instinct, and question why that would be occurring, and then work to change whatever actions you may be doing to alter that perception.

If you've continued reading this far, that gives me hope lol...and I'll extend an olive branch here. I've got a set of factory "flat top" pistons (no reliefs) out of an 86 Mustang GT (the HO factory roller) that I'll let you use if you want. Nothing wrong with them..engine was running fine when I bought it. I used the block for a 347. Pistons and rods...if you want to use em to get yours going...i have no idea whether they will work in your combo or not...no idea in the differences in the heads...you may have PtoV clearence issues...that's something one of these other guys will have to tell you. But, they're yours to use if you want...

If you're around BG...i"m about 100 miles from you. I'll even go a step farther, and offer to bring em to you...just to help a younger member out.

Let me know...

T Stone

 

If you're considering the '86 pistons, you might read http://mmb.maverick.to/showthread.php?t=56526 I have '86 pistons with E7 heads in my engine. That thread lays out the issues and answers for that combination. Lots of good info and advice. I decided to risk my tight piston to valve clearance 'cause I don't THINK it'll be a problem with the way I'll use the engine. Time will tell (still haven't run it yet) if I win or lose that bet. But, if you read the thread you'll be better able to assess your situation and make your decisions. Good luck