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Old 03-18-2009, 11:07 AM
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Stroking A Mopar 360

Hello,
I have a 72 charger with a 360ci engine and would like to stroke it to 408ci. I would like to know out of the stroker kits available for this engine, which is the best in terms of quality parts.
Thanks to anyone who replies.

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Old 03-18-2009, 03:37 PM
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Never stroked a Mopar, but if I were building a street motor that didn't require forged parts, I might lean toward buying the Mopar Performance #P5007258 cast crank and putting the parts together myself. I might use Keith Black #KB356+030 hypereutectic pistons and stock 360 rods (these might have to be narrowed to 1.000" on the pin end to fit in the KB piston). The squish dome on these pistons will have to be profiled to the cylinder heads you will use. Read "Notes" here...
http://kb-silvolite.com/performance....etails&P_id=23
These chamber sizes will produce these pump-gas-friendly static compression ratios with the above mentioned parts.....
62-9.9
64-9.7
68-9.4
72-9.0

And by the way, don't be put off by the wording of "machining" on the squish pad. Machining in this case for me would mean wrapping a towel around the piston and chucking it up in my bench vise and taking to the pad with a good, sharp course file. Mocking the motor up with modeling clay between the pad and the head will tell you where and how much to cut on the pad. I'd set the pads so that they just touched the cylinder head with the heads bolted to the block WITHOUT a head gasket in place. Then, the head gasket thickness you use will determine the squish (0.039" gasket = 0.039" squish). If the rods needed to be narrowed a little and I couldn't afford machine shop work to narrow them properly, I'd cut on them with a file also. Don't be skeered. This ain't rocket surgery.

Last edited by techinspector1; 03-18-2009 at 04:01 PM.
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Old 03-18-2009, 03:55 PM
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I'm looking at building the same,the research I've done has led me to Hughes Engines.Google it,they also happen to have a distributor in Saskatoon,another factor for me,anyway.
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Old 03-18-2009, 07:29 PM
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Thanks, for both posts.
Also, would a mopar W2 or W5 head be the best setup? And what would be the safest and smartest head chamber size and compression ratio that would suffice for a pump gas street driven car. What would you guys do?Your input is very valuable.
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Old 03-19-2009, 04:44 PM
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I'd avoid W2 or W5 style heads,simply due to the extra costs involved.They don't use regular small block valves,rocker gear,or intakes.Plus,it also limits your selection of intakes to race-style ones.I (at the risk of sounding like an advertisement) have been looking at Hughes Engines Iron Ram magnum head,which can be had drilled for LA intakes.Indy head I think has a couple options as well.Keep c.r. under 10:1,probably around 9.5-9.6,maybe go higher with a big cam.Bear in mind,I don't have a pile of research done,I'm a year or more away from building my motor.
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