hey im rebuilding my 6.0 30 over (370ci) right now is in the MaCHINE SHOP im installing new probe -16cc dish pistons with some Diamond pro select rings and some scat H beam rods. And i dont know what to tell them what to file fit the piston rings any body know? or recomend me. My engine is going to go in a 2006 silverado with a front mount turbo and maybe some 75 shot of nitous its going to be my daily driver im looking on 15# of boost the most or just 12# of boost. What do you think of this gaps top ring=.024 & second ring at= .026 let me know what do you all think or your ring gaps and im just planning on 600hp the most at the rear i dont want to go hard core up to 800-1100 hp so let me know, thanks............

 

ok, i guess nobody wants to help me out, thanks anyways.........

 

I'm not the person for knowledge on this question but just wait longer for answers. Eventually someone will chime their opinion in.

 

Why don't you call who you got your pistons from.

 

Those gaps are fine for what you are doing.

 

well i called diamond and asked them what to gap my rings and that i was going to use them with a turbo engine and they said to gap the top at .028 and the second at .030 but i think its to much but i dont really know thats why i was asking you all what do you all think and i was thinking , the top at .024 amd the second at .030. And will i get any blow by with the rings at .028 top and .030 second one well thanks let me know asap cause on monday they need to know they start cutting my rings and assemble the engine.

 

hey im actually in the same process right now.. im actually going between many sets of rings.. lets see for the total seal (plasma top ring, cast iron bottom) they said bore X .0055 for the top.. and bore X .0035 for the bottom. and if your using nitrous you should gap them alittle more apart. so for mine which is a 10 over ls1. its 3.907 times .0055 gives you the gap in inches.. ect... i actually gaped mine all between .020 and .025

 

You won't need squeeze for 600 hp...AT ALL.

 

so will .024 will work good on top and .026 on bottom or what let me know asap tommorow i need to tell my engine builder what to gap the rings... for 12-15# of boost on my 370ci. daily driver

 

I think you'll be fine at this power level . throw an O Ring in while your at it .It is always good thing to do for FI + N2O !!!

 

No need to O-ring with todays MLS gaskets...

 

so what ring gap do you recomend ?

 

go by the recomendation of diamond, it is there ring and they know the exspansion rate of the matterial they use better than anyone else, its better to be on the safe side than to break a ring or score a cylinder from too tight a gap.

 

diamond told me to gap them to .028 top and .030 second bottom one with my turbocharged engine but by just seeing those number i think its too much well i think i dont really know thats why im asking you all, thanks for the help.....and this is on and egine that will never probably see over 650hp to the rear and my daily driver.

 

anyone?