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Anyone broke an LY or 6 pack rod? #1723191 01/06/15 01:32 PM 01/06/15 01:32 PM
Joined: Jun 2006 Posts: 5,163 CT GTX MATT OP master
GTX MATT OP master Joined: Jun 2006 Posts: 5,163 CT	Just for fun - the small block rod thread got me thinking. I have a 400 shortblock with a bent connecting rod, it is bent slightly in the non thrust direction. I also have a friend with a 67 HP 440 sitting on his garage floor that he grenaded around 74, it has a couple of broken LY rods and a few that actually bent about 90 degrees and did not break. The engine is so screwed up that you can't get it apart. He shifted it around 6500-6800. Obviously he broke it with excessive RPM. And it had heavy TRW 6 pack slugs in it. What stories do you guys have? Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: Anyone broke an LY or 6 pack rod? [Re: GTX MATT] #1723192 01/06/15 01:40 PM 01/06/15 01:40 PM
Joined: Nov 2009 Posts: 3,410 Belpre,Ohio C CHAPPER master
CHAPPER master C Joined: Nov 2009 Posts: 3,410 Belpre,Ohio	I don't think ANYBODY has ever broken a six-pack rod. If you like drag racing, support your local track.

Re: Anyone broke an LY or 6 pack rod? [Re: CHAPPER] #1723193 01/06/15 01:49 PM 01/06/15 01:49 PM
Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama M MRMOPAR622 top fuel
MRMOPAR622 top fuel M Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama	Quote: I don't think ANYBODY has ever broken a six-pack rod. Not the rod but on my 1st and only set of 6 pack heavy A$$ rods a rod bolt broke about the same as breaking a rod @ 6200 RPM just as I was about to shift !And still today wonder what the Hell I was thinking putting a set of Heavy Ass set of rods in a engine! "To Be The Man'You Have Got To Beat The Man" "T/D and Pro-Bracket Racer"

Re: Anyone broke an LY or 6 pack rod? [Re: MRMOPAR622] #1723194 01/06/15 02:10 PM 01/06/15 02:10 PM
Joined: Nov 2009 Posts: 3,410 Belpre,Ohio C CHAPPER master
CHAPPER master C Joined: Nov 2009 Posts: 3,410 Belpre,Ohio	Quote: Quote: I don't think ANYBODY has ever broken a six-pack rod. Not the rod but on my 1st and only set of 6 pack heavy A$$ rods a rod bolt broke about the same as breaking a rod @ 6200 RPM just as I was about to shift !And still today wonder what the Hell I was thinking putting a set of Heavy Ass set of rods in a engine! The 6pk used to be the way to go. Hardly anybody uses them anymore. I had several sets here that I ended up giving to a junker that comes around. See them on Ebay for sale, but nobody bids/buys. Only a diehard restorer would want them I guess. If you like drag racing, support your local track.

Re: Anyone broke an LY or 6 pack rod? [Re: CHAPPER] #1723195 01/06/15 02:13 PM 01/06/15 02:13 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	i don't think very many racers run the heavy things, why would they?

Re: Anyone broke an LY or 6 pack rod? [Re: GTX MATT] #1723196 01/06/15 02:31 PM 01/06/15 02:31 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	I used to keep a bag on my desk at work with a bunch of LY rod pieces from when I grenaded it at the 1000-ft. mark years ago. You could make a jig-saw puzzle with them. Like another poster mentioned, the break probably started with a bolt, but by the time it was all said and done, it was a whole bunch of pieces, plus a broken camshaft, plus an effed-up block & crank, etc.

Re: Anyone broke an LY or 6 pack rod? [Re: BradH] #1723197 01/06/15 03:31 PM 01/06/15 03:31 PM
Joined: Jan 2003 Posts: 10,032 MN J JERICOGTX I Live Here
JERICOGTX I Live Here J Joined: Jan 2003 Posts: 10,032 MN	Paging Mopar Billy... 69 GTX 68 Road Runner

Re: Anyone broke an LY or 6 pack rod? [Re: JERICOGTX] #1723198 01/06/15 03:54 PM 01/06/15 03:54 PM
Joined: Dec 2005 Posts: 1,495 Shelby mi. J JAKE68 pro stock
JAKE68 pro stock J Joined: Dec 2005 Posts: 1,495 Shelby mi.	LOTS!!!!!!!!!!!! JAKES AUTOMOTIVE

Re: Anyone broke an LY or 6 pack rod? [Re: JERICOGTX] #1723199 01/06/15 04:51 PM 01/06/15 04:51 PM
Joined: May 2003 Posts: 6,566 Downtown Roebuck Ont Twostick Still wishing...
Twostick Still wishing... Joined: May 2003 Posts: 6,566 Downtown Roebuck Ont	Quote: Paging Mopar Billy... It ain't blew up until it's Mopar Billy blew up. Kevin

Re: Anyone broke an LY or 6 pack rod? [Re: Twostick] #1723200 01/06/15 07:17 PM 01/06/15 07:17 PM
Joined: Nov 2003 Posts: 5,160 Texas dannysbee master
dannysbee master Joined: Nov 2003 Posts: 5,160 Texas	Yes I have. Ly. Will I again? No after market rods are too cheep and blue printed short blocks are too expensive. Getting old just means you were smarter than some and luckier than others.

Re: Anyone broke an LY or 6 pack rod? [Re: Twostick] #1723201 01/06/15 07:17 PM 01/06/15 07:17 PM
Joined: Sep 2009 Posts: 500 MD JACK1440 mopar
JACK1440 mopar Joined: Sep 2009 Posts: 500 MD	This one is my favorite. Broke at the stripe. Couldn't even get the cam out of the block. I loved that motor.... 8387380-IMAG0486.jpg (184 downloads)

Re: Anyone broke an LY or 6 pack rod? [Re: GTX MATT] #1723202 01/06/15 07:39 PM 01/06/15 07:39 PM
Joined: Jan 2003 Posts: 6,531 Jacksonville, FL Chris2581 master
Chris2581 master Joined: Jan 2003 Posts: 6,531 Jacksonville, FL	Never broke a LY rod,but had one that a bolt snapped in...engine had 27 runs on it. New engine has a brand new set of LY's with ARP bolts and 6 pak slugs,but it will never go over 6000 rpm. Nautilus Racing- We use Superformance gaskets and Turbo Action converters/products.

Re: Anyone broke an LY or 6 pack rod? [Re: Chris2581] #1723203 01/06/15 08:25 PM 01/06/15 08:25 PM
Joined: Feb 2005 Posts: 20,185 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,185 PA.	I put a lot of of high 9, low 10 second passes on stock 440 rods with upgraded rods bolts,and polished and shot blasted beams. Some broke, some didn't. Would I do it again with whats available now? HECK NO. Another thing to remember was that back then most of us were running stock cranks and HEAVY TRW or Sealed Power pistons. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Anyone broke an LY or 6 pack rod? [Re: pittsburghracer] #1723204 01/06/15 09:08 PM 01/06/15 09:08 PM
Joined: Apr 2005 Posts: 2,128 Salt Lake City C camastomcat top fuel
camastomcat top fuel C Joined: Apr 2005 Posts: 2,128 Salt Lake City	I broke some, but I couldn't say it was the rod's fault.

Re: Anyone broke an LY or 6 pack rod? [Re: camastomcat] #1723205 01/06/15 09:13 PM 01/06/15 09:13 PM
Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge FastmOp master
FastmOp master Joined: Jan 2003 Posts: 5,762 Hot Rod Ridge	Yep. Broke it in the water. Kept running till I got it on the trailer.

Re: Anyone broke an LY or 6 pack rod? [Re: pittsburghracer] #1723206 01/06/15 10:08 PM 01/06/15 10:08 PM
Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama M MRMOPAR622 top fuel
MRMOPAR622 top fuel M Joined: Sep 2003 Posts: 2,008 Sweet Home Alabama	Quote: I put a lot of of high 9, low 10 second passes on stock 440 rods with upgraded rods bolts,and polished and shot blasted beams. Some broke, some didn't. Would I do it again with whats available now? HECK NO. Another thing to remember was that back then most of us were running stock cranks and HEAVY TRW or Sealed Power pistons. Would you be talking about the L2295 heavy weight pistons? I run them with a CD 286-750 roller camshaft. Last edited by MRMOPAR622; 01/06/15 10:11 PM. "To Be The Man'You Have Got To Beat The Man" "T/D and Pro-Bracket Racer"

Re: Anyone broke an LY or 6 pack rod? [Re: FastmOp] #1723207 01/06/15 10:08 PM 01/06/15 10:08 PM
Joined: Jun 2004 Posts: 926 B birdtracker super stock
birdtracker super stock B Joined: Jun 2004 Posts: 926	I vaporized one on a 12-1 motor with a 613 Ultradyne and ported 906s. All that was left was a small piece around the crank, and a piece at the top with the pin. The rest was dust. A piece went thru one of the freeze plugs and it started leaking water. Drove it on the trailer. Birdtracker

Re: Anyone broke an LY or 6 pack rod? [Re: MRMOPAR622] #1723208 01/06/15 10:44 PM 01/06/15 10:44 PM
Joined: Feb 2005 Posts: 20,185 PA. pittsburghracer "Little"John
pittsburghracer "Little"John Joined: Feb 2005 Posts: 20,185 PA.	Quote: Quote: I put a lot of of high 9, low 10 second passes on stock 440 rods with upgraded rods bolts,and polished and shot blasted beams. Some broke, some didn't. Would I do it again with whats available now? HECK NO. Another thing to remember was that back then most of us were running stock cranks and HEAVY TRW or Sealed Power pistons. Would you be talking about the L2295 heavy weight pistons? I run them with a CD 286-750 roller camshaft. Oh ya those same pistons and I still have probably 3 of the old 286 duration 750 lift cams on my shelf. They were GREAT cams back then and made some nice power with the old garage ported 906 heads. LOL. I finally sold off all my old TRW, Sealed Power pistons last Summer. 1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27 Livin and lovin life one day at a time

Re: Anyone broke an LY or 6 pack rod? [Re: pittsburghracer] #1723209 01/07/15 12:55 AM 01/07/15 12:55 AM
Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada R RUNCHARGER I Live Here
RUNCHARGER I Live Here R Joined: Jan 2003 Posts: 15,976 Chilliwack B.C. Canada	I broke a couple. Used to break the bolts I think but it was sometimes hard to tell what happened first, started cutting 100 grams out of those old forged pistons and that helped a lot. No need to run that junk these days. Sheldon

Re: Anyone broke an LY or 6 pack rod? [Re: RUNCHARGER] #1723210 01/07/15 01:20 AM 01/07/15 01:20 AM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Never broke one!! I bent one once though. It bent almost a 180 degrees at the piston pin end but yet, it still didn't break!. Tough little suckers they were, those LY,s. In most cases IMO, either the rod bolts broke first or the bearings spun causing the rod bolts to snap. Then all else happened afterwards.

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