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Old 09-11-2005, 11:33 AM
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Wiseco Pistons

I was just wondering what people's opinions are of Wiseco pistons compared to Speed Pro, Ross, JE, whatever. I'm looking to get a set for my 350 .060 over with a dome enough to fill up some 76cc heads to get 10.3-ish:1 compression. Supposedly .200"-.250" dome is what I'm looking for, have no clue what the volume of those are though (7-10cc?). I'm only questioning because I've heard many reviews that things like TRW and Speed pro should work fine from people that think Wiseco is overkill. Well, for my application and desired compression, ect, it seems like I won't get away from spending this ammount on a set of pistons. Sure I could get a set of Speed pro's for $399, but another $120 for the Sealed power rings and I'm at the $539 for the Wiseco piston/ring set. Some have also mentioned the Wiseco pistons being a little lighter than other forged pistons. Anyone know of a truth to this or is the difference in weight minute?

The piston specifications are as follows:
4.060 bore
5.700 rod
Floating pin
Preferably a machine finished top because of >10:1 compression with iron heads on the street.

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Old 09-11-2005, 12:11 PM
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Street use? Race use? Mostly street with occasional strip use?

The Wiseco piston will be a superior product and JE pistons will be equivalent to them. Ross would be your next step and then the Speed Pro stuff as far as competition engines go.

For a street engine, I would consider a KB piston, but that's just me. True racing type forged pistons are going to be made of a different alloy, but will not be quite as good as far as being able to run a tight skirt clearance for long life and reduced piston noise.

For a hot street engine, the Speed Pro forged stuff would be a great piston to use.

Wiseco pistons are best for extreme duty competition engines. You can run them if you wish, but they are a bit of overkill.
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Old 09-11-2005, 01:58 PM
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Sorry, I forgot intended use. It is for occasional street and even less strip use. Mostly a temporary motor I need to get suspension tuned before stepping up to a 383 and fogger setup. Are there any issues with running the TRW pistons? I've heard they're a LOT heavier than any other forgings and from the one's I've seen offered as the type I need, they have unmachined surfaces, leading me to believe they'll be more prone to detonation with the 93 octane we have here.
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Old 09-11-2005, 07:28 PM
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TRW/Speed Pro pistons are just fine.

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