We used the Vibrant Performance Bosch Throttle Body to HD Adapter (PN: 12471) for our 82mm throttle body and 3.0” charge pipe.
Turning our attention to the cabin, we had to remove and replace the factory throttle pedal.
The factory throttle pedal is very simple with a simple connection to the throttle cable.
After removing a couple bolts, the throttle pedal came right out.
The stock throttle pedal (left) is being replaced with a 5th Gen Camaro DBW Pedal (AC Delco PN: 22741799).
9 comments
This is a no-stone-left-unturned kind of build and I am glad you are documenting it! I hope you make a video at the end covering everything you have done over the years.
Thank you. We will do a video recap at some point.
I had no idea the stock TB was so complex. It’s actually pretty cool, and I’m sure it was a great setup for a stock or closer to stock engine, but I can only imagine the new e-throttle will give far better drivability and support making more power on the new engine.
but a 5% reduction in size… I’m surprised they didn’t find an option that was just barely larger, instead.
If you consider the throttle shafts into the equation, the effective area is actually the same. I would imagine that a single butterfly impedes flow less than several smaller ones.
LS3 throttle body is 90mm but the motor is huge and probably wouldn’t fit very well here.
What bothers me most is that the throttle pedal spacer in installed the wrong way up. That’s going to cause some serious issues.
Lol. You’re right. It’s upside down. Well, should be an easy fix.
Ha, you’re right. Good catch. What serious issues will it cause?
It will cause no issues whatsoever. It just doesn’t line up with the opening in the carpet and that’s too much for my OCD.
GrantC – There’s a hypothesis that a much smaller 74mm TB will perform better at power levels up to ~500whp… That might need testing.