1970 GTO Version 2.0

[andrewb70]

Great stuff, Andrew, and excellent commentary. This is a great thread with lots of good info. Thanks for taking the time to post it all!

- KO

Thanks Kevin!

Sometimes one has to wonder, "WHAT THE F**K WERE THESE PEOPLE THINKING?" GMPP did a very nice job coming out with a harness and ECU combo that was priced right, fits well, and is easy to hook up. Then you realize that the engineer who speced the gas pedal has never turned a wrench in his (or her) life. The pedal that they send with the harness kit is on the right:



It is HUGE and looks like it belongs on a dump truck. I can't imagine that it would fit into any car or streetrod etc...



Thanks for Jeff Schwartz, I got an alternative. The pedal on the left is from a 2007 Monte Carlo SS.



Nice and tidy, with an easy to mount flange. I was able to position it exactly where the old gas pedal was. I even used one of the original holes, drilled an extra hole, and was done.



So with some luck, I hope to drop the engine in this weekend.

Andrew

[Interceptor5588]

Thanks Kevin!

Sometimes one has to wonder, "WHAT THE F**K WERE THESE PEOPLE THINKING?" GMPP did a very nice job coming out with a harness and ECU combo that was priced right, fits well, and is easy to hook up. Then you realize that the engineer who speced the gas pedal has never turned a wrench in his (or her) life. The pedal that they send with the harness kit is on the right:



It is HUGE and looks like it belongs on a dump truck. I can't imagine that it would fit into any car or streetrod etc...

Thanks for Jeff Schwartz, I got an alternative. The pedal on the left is from a 2007 Monte Carlo SS.



Nice and tidy, with an easy to mount flange. I was able to position it exactly where the old gas pedal was. I even used one of the original holes, drilled an extra hole, and was done.



So with some luck, I hope to drop the engine in this weekend.

Andrew

Does this pedal pin out the same as a Corvette pedal, or truck, or van? Whats the difference between this and a Corvette pedal?

[andrewb70]

Does this pedal pin out the same as a Corvette pedal, or truck, or van? Whats the difference between this and a Corvette pedal?

The GM harness and ECU kit case with the CTSV1 pedal and it pins out the same as Impala SS and the C6 Corvette pedal (maybe others, but I do not know for sure).

The difference between the Impala SS and the C6 pedal is in the way that it mounts.

Here is the Impala SS pedal:
https://www.rockauto.com/en/moreinfo...443254&jsn=972

Here is the C6 pedal:
https://www.rockauto.com/en/moreinfo...42776&jsn=1032

You can see how the mounts are similar but not identical. Both my buddy Tom and I used the Impala SS pedal and the attachment to the firewall works out such that you can use one of the existing holes on the firewall that was used to attach the original pedal. Then you simply add another hole and you're done.

Also, do not modify the Impala SS pedal in any way. I modified one when using it in my Cougar (I removed the actual pedal pad and installed the original Cougar pedal pad). By removing the pedal pad and the spring that is there, it really changed the pedal feel for the worse. I have since replaced the Cougar pedal with an unmodified Impala pedal and the driving experience is much better.

Hope this helps.

Andrew

[Interceptor5588]

So if I spec out a custom harness to use a Corvette pedal, the Impala SS pedal will plug in and go? Their pedal options are truck, Corvette, Express van, and G8.

Thanks again for the wealth of detailed info in your build threads. It's become a bit of a go-to for an LS GTO build.

[andrewb70]

So if I spec out a custom harness to use a Corvette pedal, the Impala SS pedal will plug in and go? Their pedal options are truck, Corvette, Express van, and G8.

Thanks again for the wealth of detailed info in your build threads. It's become a bit of a go-to for an LS GTO build.

Why aren't you going with something like the Holley Terminator X Max?

Andrew