Will 273/early318 rods live in a mild 360?
#2850568
11/23/20 03:54 PM
11/23/20 03:54 PM
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Joined: Jan 2003
Posts: 1,255 Columbus, GA
Michael Ecks
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
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Wondering if the weight saving would be worth putting them in a daily/street 360.
9.5:1 CR, unported 308 heads and 4BBL, with something just a tad hotter than a 340 camshaft.
Nothing too extreme.
"The happiness of your life depends upon the quality of your thoughts" ~ Roman Emperor Marcus Aurelius
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Re: Will 273/early318 rods live in a mild 360?
[Re: tubtar]
#2850613
11/23/20 05:33 PM
11/23/20 05:33 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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[/quote] I don't see where it would be a problem in a mild build as far as durability goes. [/quote] agreed, do check the bobweight change/talk to your balancer. EDIT with more thought you might be better off keeping your current rods, more info needed on what you are doing. those rods may be floating pins which need locks on the pistons.
Last edited by RapidRobert; 11/23/20 06:16 PM.
live every 24 hour block of time like it's your last day on earth
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Re: Will 273/early318 rods live in a mild 360?
[Re: RapidRobert]
#2850641
11/23/20 06:31 PM
11/23/20 06:31 PM
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Joined: Jan 2003
Posts: 1,255 Columbus, GA
Michael Ecks
OP
pro stock
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OP
pro stock
Joined: Jan 2003
Posts: 1,255
Columbus, GA
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Currently have a 360 roller torn down that I want to rebuild to replace the 250K-ish engine in my challenger. I have another 360 roller that I will be taking my time with building a stroker 408.
Stock rods from the 360 would need rebuilding. I have a line on a cheap set of already reconditioned early 318 bushed rods, that I would add ARP rod bolts to and probably grind and polish the casting lines from the beams. Pistons will be KB107 which are lighter than stock, so I'll be rebalancing any way. Also the KBs are pressed or floating and come with spiral locks. Would prefer SCAT I beams, but it looks like they have gone up in price, and I would rather put that much money toward the stroker. I just don't want the rods to be a ticking time bomb in the bottom end. No racing, no nitrous or power adders,
Last edited by Michael Ecks; 11/23/20 06:36 PM.
"The happiness of your life depends upon the quality of your thoughts" ~ Roman Emperor Marcus Aurelius
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Re: Will 273/early318 rods live in a mild 360?
[Re: Michael Ecks]
#2850722
11/23/20 09:22 PM
11/23/20 09:22 PM
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Joined: Feb 2005
Posts: 20,116 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,116
PA.
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Currently have a 360 roller torn down that I want to rebuild to replace the 250K-ish engine in my challenger. I have another 360 roller that I will be taking my time with building a stroker 408.
Stock rods from the 360 would need rebuilding. I have a line on a cheap set of already reconditioned early 318 bushed rods, that I would add ARP rod bolts to and probably grind and polish the casting lines from the beams. Pistons will be KB107 which are lighter than stock, so I'll be rebalancing any way. Also the KBs are pressed or floating and come with spiral locks. Would prefer SCAT I beams, but it looks like they have gone up in price, and I would rather put that much money toward the stroker. I just don't want the rods to be a ticking time bomb in the bottom end. No racing, no nitrous or power adders, Not my build but for the price I know what I would be buying https://www.cnc-motorsports.com/2-i...ium-pro-comp-i-beam-connecting-rods.html
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
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Re: Will 273/early318 rods live in a mild 360?
[Re: pittsburghracer]
#2850761
11/23/20 10:46 PM
11/23/20 10:46 PM
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Joined: Jan 2003
Posts: 3,504 DFW
mr_340
master
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master
Joined: Jan 2003
Posts: 3,504
DFW
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The 273 rods I pulled out of an engine a couple of years back weighed around 727 grams (502g on the big end, 225g small end). I'm sure you can find something lighter and stronger. The Eagle SIR rods are 100g lighter EACH. https://www.summitracing.com/parts/esp-6123cb/make/dodge
Floyd Lippencott IV
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