5.3L Connecting Rods.

[KSrenegade316]

Okay, so after many hours of looking online and coming up short, i have narrowed it down to this. Everything i have read states that my connecting rod length center to center is 6.098".

The only rods i can find in this size are in the upwards of $700-$1000 and i can only find a few manufacturer's that make this length. However rod's that are 6.125" long are offered by many manufacturer's and are half the cost.
I'm not looking to build the fastest 5.3l out there, i just need new rods that will work with the OEM replacement pistons that i already have so i can finish my rebuild.


My question is this. Can i get away with running OEM size pistons (part # Enginetech P30798, off of rock auto, 1.327" CH) with the slightly longer rod, and not smack the pistons into the valves.

Truck is a 2004 Chevrolet Suburban 5.3L V8, flex vin (Z), with 706 heads and long tubes.

this is a link to the rebuild kit, and the crankshaft i am using. If this combination will not work, any suggestions on what piston and rod combination to run is greatly appreciated

http://www.rockauto.com/en/moreinfo.php?pk=5965149&cc=1424191&jsn=507
http://www.rockauto.com/en/moreinfo.php?pk=5966490&cc=1424191&jsn=482

 

[retiredsparky]

It gets expensive if you guess wrong. You are smart to find out the right answer. Rods don't like pistons kissing the valves.

 

[undy]

Okay, so after many hours of looking online and coming up short, i have narrowed it down to this. Everything i have read states that my connecting rod length center to center is 6.098".

The only rods i can find in this size are in the upwards of $700-$1000 and i can only find a few manufacturer's that make this length. However rod's that are 6.125" long are offered by many manufacturer's and are half the cost.
I'm not looking to build the fastest 5.3l out there, i just need new rods that will work with the OEM replacement pistons that i already have so i can finish my rebuild.


My question is this. Can i get away with running OEM size pistons (part # Enginetech P30798, off of rock auto, 1.327" CH) with the slightly longer rod, and not smack the pistons into the valves.

Truck is a 2004 Chevrolet Suburban 5.3L V8, flex vin (Z), with 706 heads and long tubes.

this is a link to the rebuild kit, and the crankshaft i am using. If this combination will not work, any suggestions on what piston and rod combination to run is greatly appreciated

http://www.rockauto.com/en/moreinfo.php?pk=5965149&cc=1424191&jsn=507
http://www.rockauto.com/en/moreinfo.php?pk=5966490&cc=1424191&jsn=482View attachment 67219 View attachment 67220

No

 

[KSrenegade316]

No

What would be a good combination that would still work in a factory bore and stroke 5.3L with the longer rods?

 

[KSrenegade316]

SO. I just got off the phone with a representative at summit racing. I was directed to a set of 6.1 C-C rods (Factory is 6.098) and a set of flat top pistons, which should provide the clearance I need on the heads, and at the same time boost my compression ratio
(The long tube headers I have should help as well?) here are links to them. it was explained to me in jibberish, but he re-assured me a couple times that this will work with a factory crank and heads. Thoughts?
https://www.summitracing.com/parts/esp-6100m3d
https://www.summitracing.com/parts/slp-h1132cpa