help with pistons

[sv650]

Hey guys I am in the process of building a 408(406act.) for my 96 ram. I bought an indy stroker kit. They claim that all of the parts are from mopar. I need to know if the pistons are hypertectic or not so I can set the ring gap. I would like to keep working on the motor this weekend. There is a number on the pistons 2306 and underneath that number is 05. the kit from indy was there cheapest kit at 995.00. the ring gaps i have now are .017"-.018" top, .013"-.016" middle, and the oil rings are .025"-.030". The rings are sealed power non file fit #E-458K-20. If I have to have a bigger gap can these rings be filed? also the pistons are .020" over, and does anyone know the cc volume for these pistons, they are dished with one long valve relief. any information would be greatly appreciated.
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[mullinax95]

Hey guys I am in the process of building a 408(406act.) for my 96 ram. I bought an indy stroker kit. They claim that all of the parts are from mopar. I need to know if the pistons are hypertectic or not so I can set the ring gap. I would like to keep working on the motor this weekend. There is a number on the pistons 2306 and underneath that number is 05. the kit from indy was there cheapest kit at 995.00. the ring gaps i have now are .017"-.018" top, .013"-.016" middle, and the oil rings are .025"-.030". The rings are sealed power non file fit #E-458K-20. If I have to have a bigger gap can these rings be filed? also the pistons are .020" over, and does anyone know the cc volume for these pistons, they are dished with one long valve relief. any information would be greatly appreciated.
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I would PM moper or BJR Racing.

 

[fishy68]

Hypers themselves don't require a special wide gap unless their KB hyper's. Speed Pro's hypers for example use a standard gap. The reason KB's use the wide gap is the top ring is moved up closer to the top of the piston so it gets hotter and requires more gap. It is of course the best idea to use what the manufacturer says to use.

 

[moper]

It's answered on the post in MP section... I said take the day off and ask Indy. Like Fishy said, not all hypers use the wide gaps and the best place to get the answer is the vendor. They have a dome configuration that looks like KB hypers, but the ring stack is not KB hyper-type. The fact they give you a stock set of rings tells me you dont need to. But make sure. It's not the place to guess.