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03sxt4x4
Dodge Dakota
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11/29/2006
22:41:36
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 Subject: 318 pistons in a 3.9
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ok heres the plan, since everyone says that a 3.9 is a 318 with 2 pistons cut off, could i buy 6 318 flat top pistons say out of jegs and put them in a 3.9?
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Richard
Dodge Dakota
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11/29/2006
23:33:36
| RE: 318 pistons in a 3.9
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Message:
I am pretty sure that you are able to. Check the bore sizes on them. I think that you have to modify the connecting rods and the crank, but it should work.
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TimG
Dodge Dakota
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11/30/2006
11:44:34
| RE: 318 pistons in a 3.9
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I believe the rod is different from the 318 rod but the piston is the same. Just as long as the bore size, wrist pin location and valve clearence is the same you should be ok. Why change the piston ??
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stevedak
Dodge Dakota
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11/30/2006
14:45:32
| RE: 318 pistons in a 3.9
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Check some of the auto parts stores that have online parts lists. If they list the same part numbers for pistons fitting the 3.9 and the 5.2, then you'll be ok.
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Joe M.
Dodge Dakota
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12/01/2006
07:01:55
|  RE: 318 pistons in a 3.9
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Message:
if the bore, and wrist pin diam. are the same
but i dont think they are
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Forseti
Dodge Dakota
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12/01/2006
19:36:16
| RE: 318 pistons in a 3.9
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everything is the same ... magnum 318 rods and pistons will fit in a magnum V-6
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daddio
Dodge Dakota
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12/01/2006
20:01:39
| RE: 318 pistons in a 3.9
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Forseti, i could be wrong but, i thought i read somewhere they are the same except the width on the big end of the rod. i think the v6 big end is a little narrower but, will fit with a little machining.
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J and J Auto
GenII
12/03/2006
01:04:48
| RE: 318 pistons in a 3.9
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Message:
Just go to hughesengines.com for your pistons
318 and V6 the same
The rods same length but the crank jornal end is
wider however with sme machine work on the V6
crank the V8 rods will fit
Hughes has the 9.8 to 1 mill the heads .020
and your almost 10 to 1
They also have great prices on pistons
Larry
J&J Auto
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