cranks
#1
cranks
what is the difference between a 5.3 and 5.7 crank they have the same stroke and use the same rods and bearings but the part number from gm is different whats the difference thanks
#3
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The LQ4/LQ9 6.0L versions both share the same basic crank with the 5.3 and the 5.7. However, the cranks are different part numbers for the same reason, the mass of the pistons/rods. The LQ4 with a CR of 9.4:1 has dished pistons and the LQ9 (which is the same engine otherwise) has flat topped pistons and a CR of 10.1:1. The stroke on all is 3.362".
#5
so can i use a 5.7 crank in a 5.3 block with 5.7 rods and aftermarket piston if it is rebalance and will i need a new balancer or flex plat or can i use what i have looking to put into a s 10 got the 57 free bad block but every thing else was good and got 5.3 block for 25.00 so i would like to use what i have any help is greatful thanks
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Originally Posted by jimmys434
so can i use a 5.7 crank in a 5.3 block with 5.7 rods and aftermarket piston if it is rebalance and will i need a new balancer or flex plat or can i use what i have looking to put into a s 10 got the 57 free bad block but every thing else was good and got 5.3 block for 25.00 so i would like to use what i have any help is greatful thanks