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2G pistons in a 1G block!?

phsyco87

Probationary Member
6
0
Jun 17, 2011
greenwood, Indiana
Been reading that it's better to use 2G pistons and rods on/in a 6 bolt motor. My Question is, is this true? Can i use 2G pistons and rods on a 6 bolt crank in a 1G block with a 1G head? And is it that much of a difference?

Thank you
 

gsexxx

Proven Member
166
0
May 4, 2012
Minneapolis, Minnesota
I run 2g stock pistons on 1g rods. As stated above, the 2g pistons have a 8:5:1 compression where as 1g pistons have 7:8:1 compression. 1g rods are stronger/more durable than 2g rods.
 

FLASH1970

Proven Member
1,267
9
Aug 22, 2005
Lake Geneva, Wisconsin
Been reading that it's better to use 2G pistons and rods on/in a 6 bolt motor. My Question is, is this true? Can i use 2G pistons and rods on a 6 bolt crank in a 1G block with a 1G head? And is it that much of a difference?

Thank you

As stated already, the 2g piston and 1g rod combo brings compression up and has the stronger 1g rods. But, if your goal is 400whp or less the 7 bolt rods will be strong enough and they are lighter so you'll have les rotational weight. People have pushed 7 bolt rods well over 500whp.
 

-red97rum-

Proven Member
1,099
40
Aug 29, 2002
Upland, California

19Eclipse90

DSM Wiseman
5,338
1,213
Sep 29, 2003
OKC, Oklahoma
^Yup. And to further clarify, it's 6-bolt rods vs. 7-bolt rods, not 1G vs. 2G, as the 1G 7-bolt cars had the same slimmer rods as the 2G turbo models.
 
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