Big block chevy connecting rods?

1979 GMC C3500
400,000 MILES • 7.4L • V8 • 2WD • MANUAL
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KHALED_454
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  • 1 POST
Dear 2carpros team,

may you please advise me what connecting rods I have to choose if I'm using the same SRP pistons you used in the BBC rebuild you made.

Note: My Engine is also overboard to 0.030.

I appreciate your help guys!
Apr 25, 2024 at 2:54 PM
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STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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We used the stock application connecting rods. They were resized and magnafluxed and balanced. Here is the video for clarification:

https://youtu.be/KbRdfZlCfiU?si=v_VDTJ4aOlHvT9UY


Let us know if you need anything else.

Apr 29, 2024 at 6:13 PM
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RYAN L
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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Hi!

Thank you for watching the series!

Just like Ken said, we used the stock rods due to them being in amazing shape and they are plenty strong for how I wanted to build the engine.

But if you are looking for something that can handle more powered a forged set is the way to go.

https://www.summitracing.com/search/department/engines-components/section/connecting-rods/part-type/connecting-rods/make/chevrolet/engine-size/7-4l-454/engine-family/chevy-big-block-mark-iv/connecting-rod-length-center-to-center-in/6-135-in/connecting-rod-material/forged-4340-steel

Here is an entire list of stock length forged big block Chevy connecting rods. You will need to get them balanced with the new pistons and wrist pins.

Thank you for using 2CarPros!

Best,
Ryan
Apr 30, 2024 at 10:49 AM