GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

5.3L conrod dimensions needed.

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Old Apr 5, 2006 | 12:39 PM
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Originally Posted by ktmrider
Found this:

Crankshaft Specifications
Material
Cast Nodular Iron Features
Undercut and rolled fillets.
Crank Pin Diameter
2.10” Main Bearing Diameter
2.56”

No wrist pin diameter but try this site http://www.smokemup.com/tech/ls1.php for some really cool stuff.
I seem to remember the wrist pin is 0.927" and the center to center length is 6.098". I have some time, I will check for more....

Thanks, this helps. The wrist pin diameter is .927-.928 from what I have managed to find on the net.
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Old Apr 5, 2006 | 01:53 PM
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this sounds like fun! i might have to bust out solidworks and make a whole rotating assembly...
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Old Apr 5, 2006 | 02:31 PM
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This is much closer to the LS1 H-Beam I've seen on line.
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Old Apr 5, 2006 | 02:31 PM
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Originally Posted by UnrthdxDream
this sounds like fun! i might have to bust out solidworks and make a whole rotating assembly...
Sounds like a plan!!
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Old Apr 5, 2006 | 03:07 PM
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hey by the way... what kinda muffler you got on your truck? it looks nice and fat but i like it..
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Old Apr 5, 2006 | 04:07 PM
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Make sure to fracture split the cap! Do that and you'll have one bad *** billet rod.
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Old Apr 5, 2006 | 05:49 PM
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Originally Posted by UnrthdxDream
hey by the way... what kinda muffler you got on your truck? it looks nice and fat but i like it..
No muffler on my truck right now. If your refering to the one on my photobucket site that is the resonator I still haven't put on. I'm lazy and don't have a welder either!!
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Old Apr 5, 2006 | 05:51 PM
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Originally Posted by vanillagorilla
Make sure to fracture split the cap! Do that and you'll have one bad *** billet rod.
You talking about the zig-zag split sometimes done on rods and caps?
Or is this some type of advanced technique for high perf rods?
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Old Apr 5, 2006 | 07:12 PM
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If this helps, SBC rods will work in the LS1. They are that close in construction.
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Old Apr 6, 2006 | 01:25 AM
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Originally Posted by TG02Z71
You talking about the zig-zag split sometimes done on rods and caps?
Or is this some type of advanced technique for high perf rods?
Yes, the zig-zag. Using the fracture joint technique makes for a much stronger clamping structure. Just make sure you number the rod/cap assy as you cannot mix and match!
Final measurements reaserch says:

Big end = 2.10"
small end = 0.927"
End center to end center = 6.098"

Take some pics when done!
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