turbonola

which one is better or should i say stronger

lemons12

iTrader: (71)

You don't have to resize for Katech, you do for ARP.

turbonola

resize what the rod bolt hole?

dirty39212

The rod! Its more like a slight hone.

jaybuller

just check with the arps.... i just completely rebuilt my 04 6.0 and used arp bolts for the rods. you have to take out the ferrule with the old rod bolts then just put in the arps. make sure everything is spotless clean and when you put them back together make sure the "puzzel pieises line up exact. i tourqued all mine down and measured for round and proper bearing clearance with the new rod bearings before i put it all together and all 8 rods were 100% within spec. i believe you may run ito problems if you let a little bit of grit get into between the surfaces but other than that i dont see them causing any issues.(unless you over touque them or somthing crazy like that) i think you could mess it up just as easy going with katec or even stock bolts for that matter

BOBS99SS

iTrader: (2)

If you are just wanting to drop the oil pan go with katech,

LS1-450

iTrader: (33)

Yup! This is where there is an advantage to using Katech over ARP. If you're swapping rod bolts w/ engine in car (dropping the pan). Katech bolts are designed not to squeeze the bore as a result of torquing the bolt, where ARP rod bolts can & likely will.

mcdonald77

iTrader: (21)

my machine shop checked my rods and I was good to use arp's with out resize.

turbonola

well since i'm taking the motor apart anyway to do a stock rebuild i guess i'll just go with the arps.

87caprice318

iTrader: (1)

I'll go with Katech or better yet, whichever one is cheaper since they both give great strength and peace of mind!

trav-tech

iTrader: (1)

I am running Arp bolts. And I don't really see the point of upgrading the bolts in stock (rods mainly gen 3) the rods them Delgado will fail/bend
long before a stock bolt fails. Might be worth while on gen 4 rods though.