That's good to hear! One of our beta testers who chimed in above has a 5.3L with a big cam that is making power probably above a stock LQ4 with the stock 4HP24. He probably will be interested in hearing about it too.

 

I imagine running an LQ4 at higher altitudes might bring the numbers back into acceptable ranges. Has anyone passed a smog test after the swap yet? Denver takes that stuff pretty seriously.

 

We're still ironing out the issues with emissions. We've also been looking at this L96 as a future possibility for those who want to buy a brand-new engine. Pricing is pretty good considering. We still have a little way to also work out the issues with Gen IV and the swap, but I think this is probably the best brand-new option.

 

Ace, can you please address the current status of this kit being emissions compatible. I don't currently live in a city that requires emissions but will be eventually moving back to one that does so this could be a deal-breaker for others as well.
The harness i'm ordering from Speartech will have the post-cat O2 sensors as well as wiring for the purge canister. They have another option for Cali regulations that adds fuel tank pressure and EVAP vent.
Do you recommend to go with all 4 options and wire in the fuel tank pressure sensor as well as the EVAP sensor?
I believe the fuel tank pressure sensor is in-line with the fuel pump.
I'm not so certain about the EVAP sensor and how that would be compatible with their harness.

 

ACE I know we are all asking a lot but can we work on using a different transmission

 

To continue on the theme of transmissions, I see much of the discussions are based around the 4HP24s that come in the 2003/2004 DIIs. What about the 4HP22 that is in previous years like mine (2002). Will that model handle a stock LM7 ok? If I wanted to upgrade to the 4HP24, is that an option?

 

Wow, that much? Heck, I'll certainly try to have my block properly fixed and have it running on an engine stand if possible then! That'd be a nice chunk of change to score!

 

I emailed Ashcroft they told me you need to upgrade the internals they said they were going to use some of the internals of the 4HP24 in the 4HP22 to make it stronger

 

If you've got the 4HP22, just go with a 4.8 instead of a 5.3 motor. It's just my rough guess that you could get away with the 5.3 if you added a transmission cooler and didn't push your luck towing up hills etc.
-Greg

 

Quote:

Originally Posted by 2002 beast

ACE I know we are all asking a lot but can we work on using a different transmission

Right now we are only going to support the ZF 4HP22/24. We can support other transmissions electrically (with some limitations), but we currently have no plans to make adapters for another transmission besides the 4HP22/24. Swapping the transmission makes this a significantly more difficult swap.

Quote:

Originally Posted by Rackolamb1

To continue on the theme of transmissions, I see much of the discussions are based around the 4HP24s that come in the 2003/2004 DIIs. What about the 4HP22 that is in previous years like mine (2002). Will that model handle a stock LM7 ok? If I wanted to upgrade to the 4HP24, is that an option?

The 4HP22 is weaker than the 4HP24, and is probably better suited for the power of a 4.8. However, we have a 4HP22 sitting behind a rebuilt LS 5.3 here right now and it seems to be handling the power fine. The 4HP24 is a bolt-in upgrade and requires no further changes. It’s slightly longer and requires the transfer case to move back further on the mounts, but otherwise it is about as simple of a swap as you can get. We have a 2002 truck that has a 2003 4HP24 and an LM4 5.3L.

What Ashcroft is referring to is putting the 4HP24 bits inside the 4HP22 case to essentially make it a 4HP24. Around here, the 4HP24s can usually be found with low miles for a couple hundred dollars, so buying a used one is a probably a better solution over putting the 4HP24 parts in the 4HP22 case.