7bolt rod on a 6bolt crank

[stroked4G63]

Ok heres the deal, I have a built 7 bolt stroker motor that i built myself. Last weak one of my mains went out after the oil found a way out at the front case. I have since decided the hell with the 7 bolt and bought a 6 bolt long block. I have a stroker crank for the 6 bolt and i want to use my rod and piston setup from my 7 bolt. I have researched it and my eagle 6 bolt rods are identical to my eagle 7 bolt rods. I know i can use the pistons for sure i am not 100% sure of the rods. keep in mind the 7 bolt eagle rods use 6 bolt main and rod bearings. If i remember correctly the 1g big rods simple need machining on the wrist pin end to put the 2g pistons on in a stock rebuild. Any way here are both rod specs. Thanks for your time gentelmen!!


Mark

6 bolt eagle rods
length 5.900"
Crankpin 1.771"
"big end" Width 1.117"
weight 575g
Bushed fit pins full floating

7 bolt eagle rods
length 5.900"
Crankpin 1.771"
"big end" Width 0.038"
weight 550g
Bushed fit pins full floating

 

[92awddsm]

The 7 bolt rods will not work in 6 bolt because the width of the big end is different.The side clearance will be too large causing the sides of the rod to beat back and forth on the crank.

 

[95blackGsTurbo]

Exactly what he said.

 

[stroked4G63]

Thats the response i was expecting but I was wishing it werent the case! Anyway thanks for your time. do you think the 1g rods will hold atleast 400hp with the weisco pistons?

 

[95blackGsTurbo]

The 6 bolt big rods will hold 400hp no problem.