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ok i was figuring he must have meant a chevy rod but didn't know 6.7 was a stocking size i always remember chevy rods as being mostly 6.x35" until you get into the 7.xx". i was also looking at the lo deck offerings as opposed to the RB

i was looking around for a dished piston for a 470" setup i have but wanted to use the 6.76 manley sportsmasters i have.

i couldn't find anything and best i can tell (and it's a guess) it looks like when you get into a 1.32CH dished piston they may push the ring pack down so the wrist pin ends up in the oil ring whereas with a 1.32CH standard crown the pin isn't in the ring.

do people ever run into skirt/counterweight interference problems when going off a CH that's listed for a different rod length than the one being used as long as the assembly stacks up the the desired deck height.

and anyone know why would these pistons weigh as much as they do? i realize it's not a top shelf piston but still a 1.32 coming in at 709 grams i just can't believe that's not a misprint.

http://www.cnc-motorsports.com/icon-ic837-033-forged-dish-pistons-4-375-bore-1.html



With the 6.76 rod you could have used the 1.270 BBC piston off shelf (454+1.25).

The piston difference is the piston you are talking about is a "step dish" not a "dish" piston, they might contact the heads I dont know. Plus the weight difference is about 30g ea or 1oz, probably nothing I will see on the street but knowing I'm using the good light parts.


Yea the Rods I just got are BBC 6.700 eagle H-beam(CRS67003d)2.20 and .990 pin weigh 815g. Im ordering Diamond pistons #52407 4.375 bore, 1.320ch, 12.5 dish in .990 pin 537g + 140g pin = 677g. Ordering Indy EZ w/ MAX wedge intakes @ 77cc. about 10.9 static compression. Looking at Voodoo solid roller #60334, that will yeld 8.3 dynamic compression and 600+hp and 600+tq on pump gas .

Now I just have to figure the suspension out (600+hp and 600+tq)

Any comments?