resizing cracked-cap LS rods ?
Thread Starter
Joined: Nov 2009
Posts: 1,112
Likes: 16
From: phx the cactus patch
resizing cracked-cap LS rods ? Hey guys n gals , I was told by 1 machine shop that You could'nt resize these rods but You could bore them out a little ,,,,,like .002" and use under-size bearings . I don't know that would'nt be right because the bearing would be thicker toward the inside and the rod would be bigger toward the outside . Or is there a decent deal on stock new rods from a sponsor ? ??? What do You know on this subject ,,,,,,,,,,I know very little concerning LS rods ,,,,Thanx
Could use opinions! I recently got an engine came from a guy that road raced it exclusively. None of the rod bearing shells have any crush left in them, yet the shells look OK except for minor burnishing at the parting line area. These are early rods (pressed pins) with ARP 8740 bolts. There are no locator dowels and the caps fit kinda loose. The shells are marked FM2555A - STD. I don't think this is normal and am trying to determine whether these are salvageable.
Thanks!
Thanks!
Trending Topics
I recently got an engine came from a guy that road raced it exclusively. None of the rod bearing shells have any crush left in them, yet the shells look OK except for minor burnishing at the parting line area. These are early rods (pressed pins) with ARP 8740 bolts. There are no locator dowels and the caps fit kinda loose. The shells are marked FM2555A - STD. I don't think this is normal and am trying to determine whether these are salvageable.
Thanks!
Thanks!
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
i bought a 6.0 long block with a bad headgasket and im going to check the bearings before i run it and i plan on putting a turbo on it too so i planned on putting arp rod bolts in it and was told the rods would have to be resized , could i use the arp rod bolts and just get the rods bored .002 over and buy .002 bearings and be safe?
i bought a 6.0 long block with a bad headgasket and im going to check the bearings before i run it and i plan on putting a turbo on it too so i planned on putting arp rod bolts in it and was told the rods would have to be resized , could i use the arp rod bolts and just get the rods bored .002 over and buy .002 bearings and be safe?
Staging Lane
Joined: Mar 2007
Posts: 61
Likes: 0
One thing that I have noticed is that by the time you spend around $100 for the new rod bolts and a $100 to get the rods resized plus the over sized bearings, you could have gone to Flatlander Racing a got some Scat I beams for roughly the same cost and probably have a stronger rod.
One thing that I have noticed is that by the time you spend around $100 for the new rod bolts and a $100 to get the rods resized plus the over sized bearings, you could have gone to Flatlander Racing a got some Scat I beams for roughly the same cost and probably have a stronger rod.
By the time you resize the rod properly with the better bolts so you actually have a better than OEM solution, your within $100 of an aftermarket rod or less and the aftermarket rod has a much better ARP cap screw and better steel. Its alot stronger than an OEM rod, even the budget stuff thats out there.
Saves a bunch of time as well and thats worth $$$ also
Go aftermarket in this department (unless your racing in a class that prohibits that)....it just makes more sense
-Tony
Bingo.....completely agree.
By the time you resize the rod properly with the better bolts so you actually have a better than OEM solution, your within $100 of an aftermarket rod or less and the aftermarket rod has a much better ARP cap screw and better steel. Its alot stronger than an OEM rod, even the budget stuff thats out there.
Saves a bunch of time as well and thats worth $$$ also
Go aftermarket in this department (unless your racing in a class that prohibits that)....it just makes more sense
-Tony
By the time you resize the rod properly with the better bolts so you actually have a better than OEM solution, your within $100 of an aftermarket rod or less and the aftermarket rod has a much better ARP cap screw and better steel. Its alot stronger than an OEM rod, even the budget stuff thats out there.
Saves a bunch of time as well and thats worth $$$ also
Go aftermarket in this department (unless your racing in a class that prohibits that)....it just makes more sense
-Tony
edit: nevermind that^ answered my own questions haha, would i need the .927" wrist pin rods or the .944" wrist pin rods, i would be reusing the stock pistons
Last edited by 1988montecarloss; May 13, 2012 at 11:44 PM.
Thread Starter
Joined: Nov 2009
Posts: 1,112
Likes: 16
From: phx the cactus patch
The "WS6-Store.com has Scat I-beams rods 6.1" with 7/16" ARP cap screws in either pin end size and they also have the same LS rods in 6.125" length either set for $ 284 unless They've gone up recently . I believe the .945" pin size is 4 the older 1997-2004 pistons and the newer is the .927" .