1TLRMS

iTrader: (22)

I have a set of JE pistons pn 131631 (detailed info: http://www.summitracing.com/parts/JEP-131631-8/) that are for a a 3.75" stroke and 5.7" rod. Called JE and they said the would work with a 6" rod and 3.5" stroke crank. That leaves .050" worth of length somewhere or am I missing something here? I know the correct way to do this is to have all the parts on hand and put it together and measure but I just have the pistons at the moment.

This is on a standard deck 95' LT1 block btw.

If anyone know if these pistons will work with a 6" rod and a 3.5 or 3.48" crank please let me know.

Thanks.

Wicked94Z

iTrader: (26)

they should work fine, pistons might end up out of the hole a bit but nothing wrong with that

1TLRMS

iTrader: (22)

Thanks for the reply. I did some research and looks like the only rod/stroke combos that will work are 5.85 rod on a 3.48 stroke and 5.7" rod on 3.75" stroke.

formula: 1/2 stroke + rod length + piston compression height.

LT1 deck height is 9.025"

3.75 stroke 5.7" rod: 1.875 + 5.7 + 1.425 = 9" or .025 in the hole
3.48 stroke and 6" rod: 1.74 + 6 + 1.425 = 9.165" or .140" out of the hole. too much
3.48 stroke and 5.85 rod: 1.74 + 5.85 + 1.425 = 9.015 or .010 in the hole

Posting this incase anyone else ever needs the info.