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Re: stock smallblock rods...
[Re: mshred]
#1114860
11/16/11 05:06 AM
11/16/11 05:06 AM
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Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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cannot tell you what they can handle, but I know they will take quite a pounding, my old 366 was testiment to that, 11-teens in a 3200# dart for 13 years, sold it 4 years ago and the guy is still running it 
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: stock smallblock rods...
[Re: MoparforLife]
#1114862
11/16/11 11:20 AM
11/16/11 11:20 AM
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Joined: Mar 2003
Posts: 2,513
PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,513
PA
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Anyone ever seen a 340/360 rod break? I haven't....Seen some bent in a 90 degree angle and twisted like a pretzel when a crank broke, but never had one break....
67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174
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Re: stock smallblock rods...
[Re: dustergirl340]
#1114865
11/16/11 01:18 PM
11/16/11 01:18 PM
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Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426
I Live Here
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I Live Here
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
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I know of a lot of fords, and chevys with stock mopar rods in them, Polished side beams, shot peened, and resized they can take a pounding. I screwed up once and put SIR eagle rods in a 360, and put the reworked stock rods on the shelf, I dont trust that short block now because I know the SIRs are a grenade waiting for the pin to be pulled. Yes the mopar rods could brake just as easy, but there are more shot SIRs than stock mopar rods that I personally know of.
A guy I know had a 347 ford with mopar 6.123 340 rods in it, and ran a lot of spray, and the only reason it popped is after 4 years of pounding it he decited to freshen the bottom end, and didnt check over the heads, he dropped a valve, killed a piston and corked a rod, that rod bent hit the crank and it was cut in half along with the stock ford block.
He still has that rod and piston on his shelf, looks like the rod was in a metal shear.
Kasey
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Re: stock smallblock rods...
[Re: Moparnut426]
#1114866
11/16/11 01:48 PM
11/16/11 01:48 PM
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Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,640
in a cattle trailer down by th...
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My old 363 has stock rods in it with ARP bolts. Been twisting it to 7200 for 15 years. Ran a best of 10.16 at 2600 pounds.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: stock smallblock rods...
[Re: Moparnut426]
#1114869
11/16/11 07:24 PM
11/16/11 07:24 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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They are great--If they are straight , have reg ole ARP bolts, and are machined by a good shop they are almost indestructable--and..if you have a race engine most likely you have pretty light pistons so that makes them even stronger--old TRW slugs can kill any combo but I love stock SB rods! 4 small blocks--8 years, 250-300 rounds a year, never as much as a spun bearing!
SIR's have a bad rap but you have to consider that they have been through many versions--first ones had knurled bolts that were not so hot, then a batch was made with tang grooves in the wrong place, and as time went on bolt combos got better.
They are easy to over torque and the bushing quality is questionable--they are light and make one turn like a chainsaw but I have had 3 engines experience failure with SIR's so I don't use them anymore. So...compare good stock rods with bolts to the H Beams out there and stockers win IMO>
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Re: stock smallblock rods...
[Re: Moparnut426]
#1114871
11/16/11 11:01 PM
11/16/11 11:01 PM
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Joined: Oct 2011
Posts: 3,036
bean town ....Ca
WHITEDART
master
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master
Joined: Oct 2011
Posts: 3,036
bean town ....Ca
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Quote:
I know of a lot of fords, and chevys with stock mopar rods in them, Polished side beams, shot peened, and resized they can take a pounding. I screwed up once and put SIR eagle rods in a 360, and put the reworked stock rods on the shelf, I dont trust that short block now because I know the SIRs are a grenade waiting for the pin to be pulled. Yes the mopar rods could brake just as easy, but there are more shot SIRs than stock mopar rods that I personally know of.
A guy I know had a 347 ford with mopar 6.123 340 rods in it, and ran a lot of spray, and the only reason it popped is after 4 years of pounding it he decited to freshen the bottom end, and didnt check over the heads, he dropped a valve, killed a piston and corked a rod, that rod bent hit the crank and it was cut in half along with the stock ford block.
He still has that rod and piston on his shelf, looks like the rod was in a metal shear.
Kasey
what is the bearing size of sb ford and how did they do that sounds like alote bull sheet going around
Last edited by whitedart; 11/16/11 11:03 PM.
In the 8s N/A.with Brett miller W8's
5.07 at 133 at 2700lb
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Re: stock smallblock rods...
[Re: Moparnut426]
#1114873
11/17/11 01:44 AM
11/17/11 01:44 AM
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Joined: Sep 2007
Posts: 35
Minot, ND
darndart
member
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member
Joined: Sep 2007
Posts: 35
Minot, ND
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Quote:
A guy I know had a 347 ford with mopar 6.123 340 rods in it, and ran a lot of spray, and the only reason it popped is after 4 years of pounding it he decited to freshen the bottom end, and didnt check over the heads, he dropped a valve, killed a piston and corked a rod, that rod bent hit the crank and it was cut in half along with the stock ford block.
He still has that rod and piston on his shelf, looks like the rod was in a metal shear.
Kasey
I don't beleive this is possible. I've built a couple 347's with 5.4" rod and the wrist pin intersects the oil rings. A 6.123 rod would put the piston somewhere in the middle of cylinder head!
My son's 427/351windsor based stroker uses a 6.125 SBC rod. I could see the Mopar rod maybe used in that combo. But the crank still has a 2.10 SBC jouranl size!!!!
Last edited by darndart; 11/17/11 01:52 AM.
73 Dart Sport 340, 410ci, Indy 360-2 230CNC.
72 Demon 340 4-speed
01 Ram Quad Cab
89 Mustang LX Boss 331,C4,HP76mm turbo, FAST EFI
86 Mustang GT 5.0 AOD
82 Capri RS 306, Fox Lake Stage 1 TW, N41, T5,etc.
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Re: stock smallblock rods...
[Re: darndart]
#1114874
11/17/11 12:23 PM
11/17/11 12:23 PM
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Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr
master
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master
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
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im running stock rods...lightened balanced polished and shot peened,
ive turned the motor 8k by accident a few times a few yrs ago..but motor still runs excellent...
6.67 1/8th last time out...
i went through a bunch of rods trying to get a set of 10 all done up the same...
i had 6 rods left over after doing this prep..
I had a ford guy want those so i got 2 more done to match that left over 6 rods..and sold them to him for 150 bucks..he put them in a ford stroker also...and is happy last i heard?
hold a 340 rod next to a big block chevy rod then youll get the picture..
cheapst
365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
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Re: stock smallblock rods...
[Re: darndart]
#1114876
11/18/11 05:19 PM
11/18/11 05:19 PM
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Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
Moparnut426
I Live Here
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I Live Here
Joined: Mar 2007
Posts: 12,008
Finally a HUSKER again
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Quote:
Quote:
A guy I know had a 347 ford with mopar 6.123 340 rods in it, and ran a lot of spray, and the only reason it popped is after 4 years of pounding it he decited to freshen the bottom end, and didnt check over the heads, he dropped a valve, killed a piston and corked a rod, that rod bent hit the crank and it was cut in half along with the stock ford block.
He still has that rod and piston on his shelf, looks like the rod was in a metal shear.
Kasey
I don't beleive this is possible. I've built a couple 347's with 5.4" rod and the wrist pin intersects the oil rings. A 6.123 rod would put the piston somewhere in the middle of cylinder head!
My son's 427/351windsor based stroker uses a 6.125 SBC rod. I could see the Mopar rod maybe used in that combo. But the crank still has a 2.10 SBC jouranl size!!!!
Might have been in his other 302 that had an offset ground crank inn it. Now that you say that. The last few 347s i built were way op in the piston also.
Kasey 
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Re: stock smallblock rods...
[Re: mshred]
#1114878
11/19/11 12:41 AM
11/19/11 12:41 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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Quote:
So is shot peening and polishing stock rods a must in a high horsepower application?
Aftermarket rods is a must in high horsepower applications. The lighter the piston, the easier it is on the rod. The shorter the stroke, the better.
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