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Need rod, bearing, & bolt reccomendations #2508178
06/13/18 11:12 PM
06/13/18 11:12 PM
Joined: Mar 2006
Posts: 1,229
In The Hills
J
jughed Offline OP
pro stock
jughed  Offline OP
pro stock
J

Joined: Mar 2006
Posts: 1,229
In The Hills
11 years ago i bought an all new 540 shortblock built for truck pulling...Siamese Mega Block, Callies 4.5, Wiseco pistons, and Eagle 7.1 rods (of all things to skimp on, rods should be the last). These rods are rated for 750hp. After the motor was pulled for body restoration, the standard 440-1s that i have run on the street were 345-CNCed. That, along with the appropriate solid roller cam, have put the HP level in the 850-900 range (Mike @ Muscle Motors rough guesstimate). Compression is 13.5:1. I would feel more at ease with 1000+ HP rods/bolts. Steel preferred, street driven. Suggestions??..or is that not enough info to go off of??

Open to main stud suggestions as well.

Thanks!

2016-04-25 17.54.06 - Copy.jpg
Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508201
06/13/18 11:35 PM
06/13/18 11:35 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
dvw  Offline
master

Joined: Mar 2006
Posts: 9,791
MI, usa
Mines never been dynoed but has been 9.0@150@3345lbs. Molnar 7.100" rods and crank. The rods come with ARP 2000 bolts and are light. Tom is very helpful. Give him a call. He'll ask for your current bobweight and RPM range and give you an honest answer.
Doug

Re: Need rod, bearing, & bolt reccomendations [Re: dvw] #2508207
06/13/18 11:54 PM
06/13/18 11:54 PM
Joined: Mar 2006
Posts: 1,229
In The Hills
J
jughed Offline OP
pro stock
jughed  Offline OP
pro stock
J

Joined: Mar 2006
Posts: 1,229
In The Hills
Originally Posted By dvw
Mines never been dynoed but has been 9.0@150@3345lbs. Molnar 7.100" rods and crank. The rods come with ARP 2000 bolts and are light. Tom is very helpful. Give him a call. He'll ask for your current bobweight and RPM range and give you an honest answer.
Doug

Thanks. I will contact.


7000-7200 rpm redline.

Rod specs...

IMG_20180613_204907705~2.jpg
Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508224
06/14/18 01:02 AM
06/14/18 01:02 AM
Joined: Oct 2007
Posts: 4,205
New York
polyspheric Offline
master
polyspheric  Offline
master

Joined: Oct 2007
Posts: 4,205
New York
These rods are rated for 750hp

The purpose of that rating is to allow Buffy the phone girl to answer your question in the shortest possible time. "This is the rod you need - you expect to have 750 hp, don't you?"
Would a 40 psi 1000 hp LSX turbo engine break those rods? Not at 5,000 rpm.
How about a 400 hp engine at 9,000 rpm? Every time.

What breaks a rod:
1. RPM squared (8,000 is not 33% more than 6,000, but 78% more)
2. reciprocating weight (direct proportion: 2 X gram weight = 2 X as bad)

Not sure?
If you exceed the critical rpm (generally a function of the fastener size & quality) the rod will break with the ignition off.


Boffin Emeritus
Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508295
06/14/18 10:18 AM
06/14/18 10:18 AM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
I have Oliver billet steel rods in my hemi. Been beating on them since 2006.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: Need rod, bearing, & bolt reccomendations [Re: an8sec70cuda] #2508301
06/14/18 10:24 AM
06/14/18 10:24 AM
Joined: Nov 2003
Posts: 1,825
NW Indiana
F
fbs63 Offline
top fuel
fbs63  Offline
top fuel
F

Joined: Nov 2003
Posts: 1,825
NW Indiana
I agree with DVW. Molnar parts are a great product at a good price. If you never want to think about it again, Oliver or Callies Ultra.

Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508380
06/14/18 01:47 PM
06/14/18 01:47 PM
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
Biginchmopar Offline
pro stock
Biginchmopar  Offline
pro stock

Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
If it was my engine I would look at Oliver, Crower, Callies or Carrillo.
The money spent is cheap insurance.
Just my opinion.

I do believe an Eagle Rod with an L-19 bolt would handle what you have but for how long? The USA steel is just way, way better.

Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508442
06/14/18 03:40 PM
06/14/18 03:40 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
C
Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
C

Joined: Aug 2003
Posts: 43,007
Bend,OR USA
I have a friend who broke two Eagle rods with L19 bolts making less than 1000 HP with NOS work
As already mentioned Oliver, Crower, Carillo or Molnar rods with either the ARP 2000 or with the L19 bolts should all be safe, go on the makers recommendations up
On the main studs ARP are the only good ones I know of out there, check the main bearing bores before and after for roundness, if the stud change it by more then .0002 have it fixed scope twocents


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Need rod, bearing, & bolt reccomendations [Re: jughed] #2508464
06/14/18 04:36 PM
06/14/18 04:36 PM
Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
F
fast68plymouth Offline
I Live Here
fast68plymouth  Offline
I Live Here
F

Joined: Jan 2003
Posts: 14,479
So. Burlington, Vt.
I’d do ARP main studs, line hone mains to spec.

If it’s in the budget, my preference would be Oliver rods.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads






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