Big block Chevy connecting rods?

KHALED_454

MEMBER
1979 GMC C3500
7.4L
V8
2WD
MANUAL
400,000 MILES

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!

2 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,621 POSTS

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.

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Monday, April 29th, 2024 AT 6:13 PM

RYAN L

ADMIN
256 POSTS

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

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Tuesday, April 30th, 2024 AT 10:49 AM