426ci

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DODGESTRIKE

DODGESTRIKE

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well ive seen 408ci from 360s and 416 from 340s but what about the 426 from 360 using the kit from hughes ?

having better results than 408ci ? or its the same thing when it comes down to ETs?
 
I'm also interested in hearing about this,I been savin a virgin 71 360 for a build of that nature, I'm told that's the thick cast block
 
DODGESTRIKE said:
well ive seen 408ci from 360s and 416 from 340s but what about the 426 from 360 using the kit from hughes ?

having better results than 408ci ? or its the same thing when it comes down to ETs?
Click to expand...

IMO the longer 4.180' stroke will get you better ET's. the 1.44 rod/stroke
ratio will keep the peak revs on par with the 1.53 rod/stroke ratio with the
4.00" arm. the average street car won't feel the difference tho. but with
the cubic inch difference and greater torque from the 4.18" arm you'll get
some noticable difference from the 408, not so much from the 416. Long
strokes & smaller bores make for KILLER street engines.

check this kit out (gonna order this for my 360):

http://www.ohiocrank.com/mopar_rotate.html

the custom JE slugs that come with it @ .070" over (4.070" bore)
and you got a 426. however make sure you sonic test the block first.
as long as it has .200" on the major thrust side your good to go.
 
BrianT said:
All I see is the 408 kit?!?
Click to expand...
its the first one.


Chrysler 340/360 425 kit[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Price[/FONT]
  • Custom JE pistons
  • Ohio Crankshaft 4340 4.1" crank
  • 6.2" H-beam rods
  • Race rings and bearings
  • Internally balanced
  • Available in 4.030-4.060-4.070 bore
  • 340 or 360 main
  • [FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]$1,995[/FONT]
 
There's two ways for getting 426". One is the 4.18 stroke crank, one is over-size boring. IMo, there is no reason to over bore to reach it unless the block has an issue and for some reason sleeving is out. The longer stroke will lower the peak rpms and flatten the curves for most builds. The longer stroke needs I beam rods I think. Personally I've never done one so I can't comment too much really. There's less than 5% difference in the strokes from 4 to 4.18 and the pistons and maybe rods would be more expensive. I think if it were me I would either go the usual 4" combo or recommend stepping up to the 4.25 stroke and a new block and go bigger. I'd rather spend less to get similar results or spend more to get a better result. You figure 3.31 to 4" is 17% or so more stroke, and 3.31 to 4.18 is about 20%, 3.31 to 4.25 is 22%. The costs for those increases goes up a lot faster once you get past 4" stroke due to airflow depands and parts sourcing. Just my opoinions tho.
 
A-BOMB360 said:
its the first one.


Chrysler 340/360 425 kit[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]Price[/FONT]
  • Custom JE pistons
  • Ohio Crankshaft 4340 4.1" crank
  • 6.2" H-beam rods
  • Race rings and bearings
  • Internally balanced
  • Available in 4.030-4.060-4.070 bore
  • 340 or 360 main
  • [FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]$1,995[/FONT]
Click to expand...

6.2 rods ? .. the kit i was looking at is this from hughes that uses 6.123 with lightweight pins and NASCAR size rod journals


Bore: 4.030" (Custom oversizes available)
Stroke: 4.180"
Rod Length: 6.123"
Rod Weight: 628 grams
Main Journal:2.810"
Rod Journal: 1.988" (NASCAR size)
Ring Size: 1/16"-1/16"-3/16"
Bob Weight: 1853 grams
Compression Ratio with Step Dish Piston (figured with a .039"/9cc head gasket):
58cc head = 10.39:1
65cc head = 9.74:1​
Rod to Stroke Ratio: 1.464:1

http://www.hughesengines.com/Index/...aW5lcw==&level1=U3Ryb2tlciBLaXRz&partid=23812
 
maybe because the hughes kit has a 4.18" stroke, needing a 6.123 rod, while the other kit has a 4.1" stroke, needing a tad longer. 6.2" rod... heck i dunno
 
piston height is different maybe?
 
Stormy69 said:
compression height would be the accurate term. since the pistons are custom you would need to know specs to compare the two kits
Click to expand...

oops lol thats what i meant (mustve confused the two...piston height is from center of piston pin to top of piston?)
 
mshred said:
oops lol thats what i meant (mustve confused the two...piston height is from center of piston pin to top of piston?)
Click to expand...
The piston height is diff and makes for a lighter piston.
 
thats nice but what do ya do if you already have indy heads and an X-block.
Its crazy all the options nowadays remember 7 yrs ago nothing but stock junkyard finds.:cheers:
 
Those Mopar crate motors are nothing to talk about..$13,200.00 for the 440 putting out 540 h.p. 550 tq...and$11,900.00 for the 410 putting out 500 h.p. and 510 tq. big deal.....
 
stroked 340 said:
Those Mopar crate motors are nothing to talk about..$13,200.00 for the 440 putting out 540 h.p. 550 tq...and$11,900.00 for the 410 putting out 500 h.p. and 510 tq. big deal.....
Click to expand...

I was just stating what's out there as far as small block cubic inches goes. Then I went on to state "But you could probably make more hp for less money."

To each their own. There's more than one way to "skin a cat" as the saying goes.


Wylde1.
 
Wylde1 said:
I was just stating what's out there as far as small block cubic inches goes. Then I went on to state "But you could probably make more hp for less money."

To each their own. There's more than one way to "skin a cat" as the saying goes.


Wylde1.
Click to expand...

Only commenting,i just went on to that site and saw the prices..just for comparison i built my 416 and having 24 less c.i.'s then the 440 they sell cranked out 520 h.p. and 500 tq. for less then $10k....:-D:-D
 
Ohio crank just told me that the 426 kit is on hold till spring.
 
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