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I carry a plug kit and pump "just in case" with my non-runflats

The key is to turn the tire inwards to clear the screws

Mine are spaced for big-brakes... I currently have the z06 front/rear calipers on... so yours may be different if you dont plan on changing out your brakes... https://www.xlr-net.com/forums/showthread.php?t=3811 the forgeline dealer can help you with the spacing, I ended up buying mine from...

I just re-programmed my ECM/TCM with EFIlive to fix the error... but even if you didn't, its probably not going to matter much for every day driving. https://www.xlr-net.com/forums/showthread.php?t=3568

No news - never ended up getting it done... Chuck didn't make it to Houston as they cancelled the event... I'm still on standby, in case he comes nearby

My guess is that its just a drop in... all the corvette parts will fit. D3 and other shops say that are happy to do the work.

This guy put an LS3 in the XLR and its putting out more than the supercharger 4.4L N* Looks like 486hp/457tq http://www.youtube.com/watch?v=lZcUkB1nldI

Popbigguy is right - any c6 vette exhaust will work, but you will need the tips replaced with longer ones... You also may not get the same sound since the C6 has a different motor than the XLR... so be aware of that.

Amen to that... I'll never go back to run-flats

DBA 4000 slotted fitted for C6 Z06 vettes. https://www.xlr-net.com/forums/showthread.php?t=3811

I don't have an answer to your question... but, I do ahve something to consider... when I put on the Corvette C6 Z06 calipers on my XLR-V, not only did I have to make sure they would bolt on... but I'd have to find a set of rotors that would work as well... in both diameter, and offset... so...

Bob - I don't mean to be difficult - but that thread doesn't show or speak of any modified engine covers... :dunno:

Some quick searching didn't turn up anything for me... :dunno: Can you point us to some examples of modified covers? I'd love to get mine to fit over my D3 runners :)

I haven't tried- but I wonder if there's a way to modify the stock engine cover so you can retain some of it to put back on... I've seen this done on other engines after installing larger intakes... hmm

Hah - funny. :lol: Turns out Chuck is visiting Houston doing a Vararam event - so I'm scheduling with him right now to get it down while he's in town... so looks like the weekend of the 26th in March - so in 4 weeks. :)...

Thats interesting data. Well - some things to note in difference is that first we're talking about the XLR's A6 here... not manual... and you were moving from 3.45 to a 4.10... whereas we're moving from 2.56 to a 3.43... So really we're moving closer to your stock 90 ZR1 config - not going...

It looks like you have 4 concerns: Reduction in fuel economy Limited top end speed Drivability Cost I did a significant amount of the research on this - you are technically accurate, but the real world data is not consistent with the math. ** Reduction in fuel economy First off - gas...

Looks like there isn't much of a MPG change after doing some reserach... the RPM is a little higher than before after the 3.42 swap, but since the engine is under less load its probably a wash on mileage... we'll see

He also does a rear-end 3.42 gear swap that increases power to the wheels with a slight MPG compromise... I'm considering it after seeing this: http://www.youtube.com/watch?v=AWxWvy76VyE more here...

I've been working with Chuck of Corvettes of Westchester on mine... his first tune was miles better than stock... firmer shifts and significantly less slop between gears... still not quite perfect, but MUCH better. He's not far from you - you should check him out.