Author Topic: Pistons for a 360  (Read 8542 times)

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driveamerican

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Pistons for a 360
« on: October 24, 2015, 04:15:46 PM »
 does anybody make a set with a 4.080 bore and 1.88 compression height? has anyone used dodge pistons they show 1.84 compression height 4.080 bore but a 0.984 pin size can the small end of the rod be made to fit safely? oh I guess I should tell you it is for a galaxie with a c6 stock and a 3.00 gear not a racer just a cruiser. also I am sorry I did search but didn't find anything about this hell i don't even know if i am posting in the right place so anyway thanks for reading.

chris401

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Re: Pistons for a 360
« Reply #1 on: October 25, 2015, 12:36:02 AM »

driveamerican

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Re: Pistons for a 360
« Reply #2 on: October 25, 2015, 07:21:29 PM »
Thanks for the info

FElony

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Re: Pistons for a 360
« Reply #3 on: October 26, 2015, 12:26:25 AM »
361 FT pistons. With the stock 6.54 rod, it comes out to exactly 10.17, which is cool if your block is square at that height. Guys, what are the downsides of this piston? How do you figure compression with a dish like that? What is the lack of a valve relief going to do? Anybody here use this before?

driveamerican

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Re: Pistons for a 360
« Reply #4 on: October 26, 2015, 06:17:36 PM »
That piston will actually protrude from the deck if you are anything but uncut won't it? so all of the questions you gave me lead me to ask if one of the people on this forum dosnt have a solution I am going to need a crank and set of rods witch is ok but it would be nice to use this stuff up especially when your giving the parts and labor away. If I did use pistons for a 390 I am afraid it would just be another dent in the fe reputation. Thank you much for your knowledge and your time

chris401

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Re: Pistons for a 360
« Reply #5 on: October 26, 2015, 06:41:13 PM »
If you knew what the dish cc is you can use the link below to figure compression. Assuming your rods are exactly 6.54 your gasket would compensate for the .002 piston height. What the piston to head limits are for this particular warmed up running engine would be better answered by Jay or anyone who has actually built one that close.

http://www.wallaceracing.com/cr_test2.php

chris401

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Re: Pistons for a 360
« Reply #6 on: November 01, 2015, 12:17:23 AM »
Surprised no one has experience with a 360. The catalog pistons I ordered in 1991 did come out of the hole but disappeared with the head gasket. I beat on it till spring when it broke a rod. $650 worth of pistons wasted. I was young when I sunk that boat and didn't pay attention to the particulars. If your going to beat on it I can say for sure buy new rods or find a set of 352 360 HP rods that don't snap the top off.

fekbmax

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Re: Pistons for a 360
« Reply #7 on: November 01, 2015, 06:24:46 AM »
Head gaskets are available in many many thickness .
Keith.  KB MAX Racing.

chris401

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Re: Pistons for a 360
« Reply #8 on: November 01, 2015, 11:31:34 AM »
Yes, you are correct. He would be helped more by knowing the minimum head to piston tolerances. That would help him select the correct gaskets.

Heo

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Re: Pistons for a 360
« Reply #9 on: November 01, 2015, 06:10:47 PM »
Of you need a crank get a 390 crank and
Use 390 Pistons since a 360 is just a
Destroked 390 with 390 Pistons that give
It to big squish height



The defenition of a Gentleman, is a man that can play the accordion.But dont do it

FElony

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Re: Pistons for a 360
« Reply #10 on: November 02, 2015, 03:43:41 PM »
OK, here's my rant. Everybody's solution is always the easy way out. Where the heck is the challenge? Doesn't it bother anyone that 350 Chevy trucks get the glory while 360 Fords are dogs? Can't we for once put down the status quo 445 with alloy heads and an RPM intake and do something out of the ordinary?

I had hope that Brent's 352 was going to be a good street/strip build. Instead it got to overly tecchy (rhymes with yecchy) and, as far as I know, is dead in the water. Damn, I wish there was a Grassroots subforum in here. Billions of short stroke FE's out there and nobody cares.

Somebody pick up the ball here and analyze this piston for street/strip use.

FElony

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Re: Pistons for a 360
« Reply #11 on: November 04, 2015, 06:22:31 PM »
OK, here's my rant. Everybody's solution is always the easy way out. Where the heck is the challenge? Doesn't it bother anyone that 350 Chevy trucks get the glory while 360 Fords are dogs? Can't we for once put down the status quo 445 with alloy heads and an RPM intake and do something out of the ordinary?

I had hope that Brent's 352 was going to be a good street/strip build. Instead it got to overly tecchy (rhymes with yecchy) and, as far as I know, is dead in the water. Damn, I wish there was a Grassroots subforum in here. Billions of short stroke FE's out there and nobody cares.

Somebody pick up the ball here and analyze this piston for street/strip use.

Looks like myself and the original poster are destined to become outlanders. I didn't get a PM from Jay begging me to admin a Grassroots forum for those DIY guys who want to tweak with factory parts, as well as refurbing all other parts on the car. Maybe he lost my email. Maybe he's just disgusted that I continue to hip check the Stepford-esque formula. Difficult to say.

jayb

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Re: Pistons for a 360
« Reply #12 on: November 04, 2015, 06:59:59 PM »
Sorry, I'm still processing "350 Chevy truck" and "glory" in the same sentence.  What???  The words "turd" and "load" come to mind.  Doesn't seem like much of a competition.  ???

Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

chris401

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Re: Pistons for a 360
« Reply #13 on: November 04, 2015, 09:46:40 PM »
What is the acceptable clearance when building any engine out of the hole? I am not talking dome but the top outer edges. With .002 out and .021 steel shims seems plenty. Is there a buffer for rod and piston stretch when one is hot and running?

FElony

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Re: Pistons for a 360
« Reply #14 on: November 04, 2015, 09:53:26 PM »
Sorry, I'm still processing "350 Chevy truck" and "glory" in the same sentence.  What???  The words "turd" and "load" come to mind.  Doesn't seem like much of a competition.  ???

Gee, LOTS more people over the years have built up 360's than 350's. {guffaws} Have you noticed that there are old 350 trucks running in Stock Eliminator? Even a couple Dodges. Know how many old FE trucks there? Zee Row. You're right; not much of a competition.

FElony

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Re: Pistons for a 360
« Reply #15 on: November 04, 2015, 09:56:24 PM »
What is the acceptable clearance when building any engine out of the hole? I am not talking dome but the top outer edges. With .002 out and .021 steel shims seems plenty. Is there a buffer for rod and piston stretch when one is hot and running?

I don't know where you got .002 out, but your scenario only yields .019 quench, which is instant disaster. Use standard .042 gasket here.

jayb

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Re: Pistons for a 360
« Reply #16 on: November 05, 2015, 08:05:13 AM »
Sorry, I'm still processing "350 Chevy truck" and "glory" in the same sentence.  What???  The words "turd" and "load" come to mind.  Doesn't seem like much of a competition.  ???

Gee, LOTS more people over the years have built up 360's than 350's. {guffaws} Have you noticed that there are old 350 trucks running in Stock Eliminator? Even a couple Dodges. Know how many old FE trucks there? Zee Row. You're right; not much of a competition.

Guess I just don't pay any attention to the brand X stuff...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

fekbmax

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Re: Pistons for a 360
« Reply #17 on: November 05, 2015, 08:35:50 AM »
We need a like or thumbs-up for comments.  Sometimes there's just no words, lol .
Keith.  KB MAX Racing.

chris401

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Strange
« Reply #18 on: November 05, 2015, 09:59:28 PM »
I give this post a thumbs down. What little I have worked with a lathe and mill concerning aircraft engines I know refusing to answer a straight forward question like this is pretty childish. Especially when there are a couple of you who have gone beyond assembling parts and pieces and who have blueprinted and built an engine. When I have the experience to help someone I just do it. I don't care what my contemporaries or superiors opinion are. I have spoken to an engine builder and will be responding privately to original poster, no need to answer or comment.

Barry_R

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Re: Pistons for a 360
« Reply #19 on: November 05, 2015, 10:43:33 PM »
Mathematically possible.  Old school hot rodding.  We used to mix & match stuff all the time before stroker parts existed.

The 360 pistons probably have no valve notches - Mope pistons are dead flat in many cases.  I looked at them as a possible low/low budget stroker deal at one point.  Aluminum don't care what is written on the valve covers - its just dimensional.  The 4" bore stuff works for a 352 - might look at 340 parts  (start at 4.040) for 360 based deals.  Problem is that by the time you pay somebody to modify them you'll have custom piston money tied up...but if you own or have access to a shop its a different game.

Means that to reach the target range of "zero deck" you can mill the top of the piston as needed - pretty easy lathe or even mill project.  Replacement cast pistons are plenty thick enough to handle a .020, .030, or .040 whacking.  You can buzz the FE rods and the pistons to use .990 Chev pins - or just haze the rods to use the Mope pins.

I guess if I was doing this stuff now on a real budget I would have Adney fuzz the crank down to 2.200, get a set of cheapskate chinaman , 6.7, 6.8, 6.585 or whatever rods needed to make things work....

driveamerican

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Re: Pistons for a 360
« Reply #20 on: November 06, 2015, 10:29:06 PM »
Well thanks for all the responses I have been tied up with other stuff so I am sorry I haven't been responding , here is my plan I will ask speed pro if they can give me a dish volume if not I will buy one piston to check if it is close lucky for me the machine shop I use has a very good owner and he will work with me to cut them to zero chances are it will cost more than finding a 390 crank and rods but at least these parts won't end up in a dam toyota, I think with the parts I have performer intake tq20 cam  and a 600 holley overall I should come out ok. I will also get some satisfaction from having a 360 that runs good.

FElony

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Re: Pistons for a 360
« Reply #21 on: November 08, 2015, 10:02:58 PM »
OK good deal. I think I'm up for a set, too.