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  #1  
Old 07-26-2001, 03:55 AM
Dean318 Dean318 is offline
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Join Date: Jul 2001
Location: Melbourne, Australia
Age: 43
Posts: 18
Question How to stroke a 360???

G'day everyone.
I want to find out the best way to increase capacity/stroke on a 360.
I'm currently running a 300hp 318 in a 69 Valiant Regal Sedan (same as a Dart, but a sedan) with all of the good peripherals, (ignition, M/P M1 manifold ect). I want to stick to a small block so of course I can still use all of my other
hardware, but I want big block cubes. Is this a popular exercise in the U.S.,
cause it's not here in Australia. And what rods, pistons ect are most commonly used. Also, what HP and torque figures are acheivable while
maintaining daily driveability.
This website is a Godsend to someone who is living in Ford and Chevy land.
Any thoughts would be great!
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  #2  
Old 07-26-2001, 09:07 AM
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rumblefish360 rumblefish360 is offline
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The practice of stroking a small block (Or big block for that matter) is gaining popularity here in the states. The only supplyer I know off right noe that has stroker cranks for sale is MoPar performance. Keith Black (I believe) supplys the pistons for MoPar. If the price of a new crank is to much, then you will need a shop that can off set the cranks throw.
Stock rods can handle alot of power. There forged. And come with every engine. MoPar offers different length rods for a bit of custom work if needed.
Driveabilty depends on your taste. My current 360 is over 400hp. Its easy to drive. With a stroker, you can get much more torque and a HP peak sooner than a standard stroke engine. The real question is how much power do you want? Or how fast do you want to go?
Check out www.hughesengines.com for stroker info.
Heres a list of what Mopar has to offer. If theres a dealer in town, try to get a club disscount. Even if its a club of one. Tell'em your tired of being beat by brand "X"

MoPar performance stroker cranks;

HD Cast, 4.00 stroke p5007258
Forged 4340, 4.00 stroke, p5007254
Billet, 3.79 stroke, 8bolt flange, p4452979 (Lots of money)

Forged Piston & rings for the 4.00 stroke crank.
p5007412 (4.00) @ 12.0-1
p5007413 (4.030) @12.0-1
p5007414 (4.060) @ 12.0-1

Forged pistons & rings for the 3.79 crank.
p4876980 , 4.00 bore @ 10.5-1
p4876981 , 4.030 bore @ 10.5-1
p4876982 , 4.060 bore @ 10.5-1
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  #3  
Old 07-26-2001, 10:15 AM
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DartMan360 DartMan360 is offline
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What all has to be done to the block to accept the 4in stroker crank? Also if we use this in a .30 over 340 what kind of CI are we looking at? Everytime I see something about stroking a motor it confuses with what I have learned last time.
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Serving all of your high performance needs from custom engine building to full race car fabercation.

On the 8th day god created Drag Racing...Cut a good light and go to heaven

67 Dart GT Hardtop 360 380 crate
67 Dart GT Convertable. 360 (for sale)
2-99Durango's 5.2 (all stock)
1977 Dodge Motorhome. Jambre special. 22ft. 360.
99 Coyte Chasis Drag go cart. (It is in the works, fram being stretched rite now. Should run 12's in the 1/4)
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  #4  
Old 07-26-2001, 10:37 AM
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MOPARMANJAMES MOPARMANJAMES is offline
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Exclamation FYI

Right now there are several suppliers of pistons but the most affordable is Kieth Black/Silvolite. I just put in a product request with them for some flat top claimer pistons using the 360 block and the 4" crank. My friend buys their chevy 400 claimers for $149 a set from Scoggins Dickey.
If they make these new chrysler stroker claimer pistons, they will be extremely affordable so call those guys up or E-mail them with requests and let's get some nice hypereutectic pistons at bargain prices!
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  #5  
Old 07-26-2001, 06:32 PM
Dean318 Dean318 is offline
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Thanks for that rumblefish360,
Having the crank offet might be the way to go given that Mopar stuff
down here is really expensive and hard to get.
(ie M1 dual plane man = $600.00 plus) Your right in guessing that I want more power without having to ring the suckers neck every time.
What capacity is the result?
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  #6  
Old 07-26-2001, 07:18 PM
408stroker 408stroker is offline
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Hi. with a 4" stroke mopar crank in a .030 overbored 360 it will produce 408cid. It takes some grinding but nothing major. As for rods you can use reconditioned factory rods with the small end narrowed to 1". hope this info helps some.
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  #7  
Old 07-26-2001, 08:15 PM
Dean318 Dean318 is offline
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Thanks also 408stroker,
This is obviously the method you have used, are you happy with the
resulting power, drivability ect?
Also, can the 904 T/Flight go behind the 360?
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  #8  
Old 07-26-2001, 11:31 PM
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DartMan360 DartMan360 is offline
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A 904 will bolt up to any small block.

Ok I looked at the kit that Hughes sells for 340. I tryed calling them but they are on vacation. So next best thing is you guys here. The 416ci storker kit in a .30 over 340. Stage 3 Edelbrock heads, 571/576 lift at 1.60, RPM air gap manifold, and 1.60 roller rocks. What kind of power would we be looking at? Im going to call Hughes Monday morning and talk to them. Hopefully we can sell the convertable and get the hardtop into the 10's. What you guys change if anything with this setup?
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Pro Street Ultimate Alusions, Akron Ohio (330) 733-3636
Serving all of your high performance needs from custom engine building to full race car fabercation.

On the 8th day god created Drag Racing...Cut a good light and go to heaven

67 Dart GT Hardtop 360 380 crate
67 Dart GT Convertable. 360 (for sale)
2-99Durango's 5.2 (all stock)
1977 Dodge Motorhome. Jambre special. 22ft. 360.
99 Coyte Chasis Drag go cart. (It is in the works, fram being stretched rite now. Should run 12's in the 1/4)
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  #9  
Old 07-27-2001, 12:25 AM
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rumblefish360 rumblefish360 is offline
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Dartman360;

Dartman360, Dean318
Make sure the 904 is up to the task. Some of them in stock form can not handle a stock 360. Make sure its built right. As far as power goes on the stroker, I can run a desk top dyno 200 sim. I'll need compresion, carb size, header size and cam timing events.
If you can supply cfm ratings for the head flow, it would be a great improvement on the comp. simulation.

Dean318;

More stroke = more power. Thats a general answer to a general question. Give specs for a dyno 200 sim. Read above.


MOPARMANJAMES;

Once again you come up with something really good. Great work/lookin out. Pistons can be the bane for us MoPar fans. (Along with a few other things)
Can you give the web site proper?

408stroker;

Narrowing the small end to 1 inch is for chevy pistons?
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  #10  
Old 07-27-2001, 12:40 AM
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DartMan360 DartMan360 is offline
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Im still not real good at figuring out the cfm readings. But I have enclosed the link to the page about the heads. If you go all the way at the bottom to the Stage 3 porting that is the porting we would choose. Click the Flow specs link and it will give you a graph. Again sorry for you having to do this. But im still learning when it comes to building motors. I have most of the basic things down. Im only 16 and have only learned from being out in the garage and at the track. Also I read as much as I can about these things.

The CR we would be using is 12.4-1 with 60cc head. But the Edelbrocks are around 67. So that would drop the CR rite? Carb will probly around 850 or 900. Header size is 1 5/8 with 3in collector.

Is desktop dyno as arcuate as they say? I have heard different stories about this program. Maybe that will be the next thing I will pick up. If you need any more info let me know. Thanks for the help. I have learned alot so far in the past month that I have been a member of the group.
here is the link
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Pro Street Ultimate Alusions, Akron Ohio (330) 733-3636
Serving all of your high performance needs from custom engine building to full race car fabercation.

On the 8th day god created Drag Racing...Cut a good light and go to heaven

67 Dart GT Hardtop 360 380 crate
67 Dart GT Convertable. 360 (for sale)
2-99Durango's 5.2 (all stock)
1977 Dodge Motorhome. Jambre special. 22ft. 360.
99 Coyte Chasis Drag go cart. (It is in the works, fram being stretched rite now. Should run 12's in the 1/4)
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  #11  
Old 07-27-2001, 01:02 AM
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rumblefish360 rumblefish360 is offline
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The desk top dynos are only so good. But there preety good for being what they are. There better as a learning tool. The info you gather from them should not be taken as writin in stone.
What cam are you runing. Hughes? I should have know that the stage III porting was a Hughes deal.
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  #12  
Old 07-27-2001, 01:05 AM
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DartMan360 DartMan360 is offline
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The cam i was looking at was a Hughes cam. Is this bad or good?
__________________
Pro Street Ultimate Alusions, Akron Ohio (330) 733-3636
Serving all of your high performance needs from custom engine building to full race car fabercation.

On the 8th day god created Drag Racing...Cut a good light and go to heaven

67 Dart GT Hardtop 360 380 crate
67 Dart GT Convertable. 360 (for sale)
2-99Durango's 5.2 (all stock)
1977 Dodge Motorhome. Jambre special. 22ft. 360.
99 Coyte Chasis Drag go cart. (It is in the works, fram being stretched rite now. Should run 12's in the 1/4)
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