are these gen 4 rods in my 5.3? - LS1TECH - Camaro and Firebird Forum Discussion

Notices
Forced Induction Superchargers | Turbochargers | Intercoolers

are these gen 4 rods in my 5.3?

Reply

Old 04-14-2018, 01:10 PM
  #1  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default are these gen 4 rods in my 5.3?



i believe these are gen 4 rods in my 2004 5.3. If not, correct me, but what would be the next weakest link? and what are my limits? (turboed)

(being a gen 3 motor i figured they didnt fully upgrade everything before the gen 4 motors were produced?)
fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 01:15 PM
  #2  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 01:28 PM
  #3  
TECH Addict
 
Game ova's Avatar
 
Join Date: Jul 2015
Posts: 2,332
Default

Not sure if what you have is gen 4. But here ya go.
Game ova is online now  
Reply With Quote
Old 04-14-2018, 01:30 PM
  #4  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

yea ive seen that lol, pretty sweet. just wondering what else i should worry about or does this mean i can turn up the boost without worrying too much. im at 11psi making over 500wheel right now
fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 01:33 PM
  #5  
TECH Addict
 
Game ova's Avatar
 
Join Date: Jul 2015
Posts: 2,332
Default

Originally Posted by fbody4everyone View Post
yea ive seen that lol, pretty sweet. just wondering what else i should worry about or does this mean i can turn up the boost without worrying too much. im at 11psi making over 500wheel right now
From what I've seen, as long as you aren't all in...early in the rpm... and the tune isn't crazy .... it will live and run good. I've personally never tried it though.
Game ova is online now  
Reply With Quote
Old 04-14-2018, 01:35 PM
  #6  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

i know people are pushing 700+ wheel with their gen 4 motors but not sure about my gen 3, even tho it may have strong rods
fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 01:37 PM
  #7  
TECH Senior Member
iTrader: (26)
 
ddnspider's Avatar
 
Join Date: Aug 2004
Location: FL
Posts: 7,524
Default

Even the gen 3 rods will hold power. 9 out of 10 on boost who blow up end up lifting the ring land. If they were gen 4 rods ( I can't tell from the pic, but I'm no expert), and you had a good set of pistons in it, it would hold a ton of power.
ddnspider is offline  
Reply With Quote
Old 04-14-2018, 01:40 PM
  #8  
TECH Addict
 
Game ova's Avatar
 
Join Date: Jul 2015
Posts: 2,332
Default

This is regurgitated, but makes sense. Put the car on the dyno, find out where max torque is..... and leave the timing soft wherever that happens to be, ramp it in from there. I think people bend rods because the high timing feels good down low.... but they are asking a lot of the stock rods.
Game ova is online now  
Reply With Quote
Old 04-14-2018, 01:47 PM
  #9  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

i hope so, bought the motor pretty cheap thinkin it was gunna hold 500-600 safely. *tops* but helps the peace of mind knowing thatd they are gen 4 rods? anyone?
fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 03:49 PM
  #10  
Restricted User
 
Join Date: Mar 2014
Location: Ohio
Posts: 6,155
Default

Yes, those are gen 4 rods.
JoeNova is offline  
Reply With Quote
Old 04-14-2018, 04:18 PM
  #11  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

Originally Posted by JoeNova View Post
Yes, those are gen 4 rods.
any difference with these pistons vs gen 4 pistons? next weakest link?
fbody4everyone is offline  
Reply With Quote
Old 04-14-2018, 04:25 PM
  #12  
Launching!
 
Join Date: Feb 2015
Posts: 249
Default

Simple identifier, pimple on one side of rod.
tblentrprz is offline  
Reply With Quote
Old 04-14-2018, 04:53 PM
  #13  
TECH Senior Member
iTrader: (26)
 
ddnspider's Avatar
 
Join Date: Aug 2004
Location: FL
Posts: 7,524
Default

Originally Posted by fbody4everyone View Post
any difference with these pistons vs gen 4 pistons? next weakest link?
floating vs. press fit piston pin

Originally Posted by tblentrprz View Post
Simple identifier, pimple on one side of rod.
My gen 3's had a dimble on the 1 side of them.
ddnspider is offline  
Reply With Quote
Old 04-14-2018, 05:22 PM
  #14  
TECH Junkie
iTrader: (21)
 
truckdoug's Avatar
 
Join Date: Nov 2013
Location: Portlandia
Posts: 3,719
Default

They both have bumps. Gen "4" rods are way beefier in the beam and big end. I have seen the beefy rods in both press fit and floating configuration.
truckdoug is offline  
Reply With Quote
Old 04-14-2018, 05:41 PM
  #15  
TECH Fanatic
iTrader: (1)
 
sbcgenII's Avatar
 
Join Date: Dec 2004
Location: Fort hood
Posts: 1,213
Default

Gen 4 rods have 4 sharp corners on the caps and beams. Gen3 have a radius on 2 sides.
sbcgenII is offline  
Reply With Quote
Old 04-14-2018, 06:46 PM
  #16  
Launching!
Thread Starter
 
fbody4everyone's Avatar
 
Join Date: Oct 2014
Location: Iowa
Posts: 283
Default

thanks guys
fbody4everyone is offline  
Reply With Quote
Old 04-15-2018, 07:34 AM
  #17  
On The Tree
 
Join Date: Jan 2011
Location: chicago
Posts: 105
Default

Originally Posted by Game ova View Post
Not sure if what you have is gen 4. But here ya go.
https://youtu.be/oPGITRHQ_Bg
You have gen 3 or 4??
helga203 is offline  
Reply With Quote
Old 04-15-2018, 08:14 AM
  #18  
10 Second Club
iTrader: (4)
 
rt338b's Avatar
 
Join Date: Dec 2013
Posts: 95
Default

rt338b is offline  
Reply With Quote
Old 04-15-2018, 08:44 AM
  #19  
TECH Addict
 
Game ova's Avatar
 
Join Date: Jul 2015
Posts: 2,332
Default

Originally Posted by helga203 View Post
You have gen 3 or 4??
The car in the link is not mine. Just posted it to show those sbe's, gen 3 or 4 can make plenty of steam and still live. My car is not sbe, but isn't anywhere near even being on the same planet as that mustang.
Game ova is online now  
Reply With Quote
Old 04-15-2018, 08:55 AM
  #20  
TECH Fanatic
iTrader: (2)
 
Join Date: Nov 2015
Posts: 1,309
Default

My 2003 5.3 has gen 4 rods as welll. I was shocked when I opened up the pan and tray. My guess is that it has pressed rods as Iím one of the bastard gen 3 engines with the gen 4 rods early on. Any way to tell if they are pressed or floating pistons without pulling one out? Maybe a part number on the piston? I could have been lied to about the year of the motor too tho.

To the OP, my gen 3 rods have been up to 12psi or about 600hp at the crank with no issues. The big difference between the rods is rpm, gen 3 are safe to 6500ish and gen 4 higher from what Iíve read.
customblackbird is offline  
Reply With Quote

Thread Tools
Search this Thread

Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: