want to increase the compression on a 3.1/3100?

[no_doz]

does anyone know where i could find 10.5/1 compression pistons for these motors or rods that would bring me to such a CR?

[candychevy87]

drop in the 3.4 crank, easy way to raise compression

[sanjay]

drop in the 3.4 crank, easy way to raise compression

Please explain..3400's and 3100's use the same crank.

[no_doz]

yea id like to know that one myself-considering the 3.4 is just a bigger bore...please-do tell?

[candychevy87]

i thought it was different stroke, i guess its not,

[Rhedalert]

The only option I could think of is to purchase pistons from the gen-1 iron headed 3.1 and have them machined precisely to achieve that compression. using those pistons alone will net about 11.5:1.