KJurasek
NAXJA Forum User
- Location
- Lafayette, LA
"Warranty might not apply when installed into an XJ, unless you buy it as a crate engine, and then you're looking at ridiculous money. And again, the people who've done the swap, with 5.3s, no less, are reporting mileage no better, and in some cases worse, than the 4.0. I know of at least a couple with strokers getting around 17 mpg"
Are they running with fuel injection or carb??
A lot of things come into play here when expecting larger MPG gains such as vehicle weight, tire size and gearing. As for the warranty, yes I am going with a crate engine. For the amount of money I have sunk into the stroker, I could have easily bought a 6.0l LQ4 in the vehicle. OK, maybe it will come out a little more, but I am thinking of the overall benefits and not just MPG.
A 5.3 in a Cherokee? Well it is a fast revving engine, but would be better off going with the 5.7. As for me, there is not much difference between the 5.3 (about 325 hp) and the 4.9 (310 hp) I have already. It simply would not be worth it.
Now a 400 hp 6.0l LQ4 or 450 hp LQ9??
Well now, that might be worth looking at.
But wait a minute, wasn't this whole conversation about the possible install of the 4.5 Duramax????
Are they running with fuel injection or carb??
A lot of things come into play here when expecting larger MPG gains such as vehicle weight, tire size and gearing. As for the warranty, yes I am going with a crate engine. For the amount of money I have sunk into the stroker, I could have easily bought a 6.0l LQ4 in the vehicle. OK, maybe it will come out a little more, but I am thinking of the overall benefits and not just MPG.
A 5.3 in a Cherokee? Well it is a fast revving engine, but would be better off going with the 5.7. As for me, there is not much difference between the 5.3 (about 325 hp) and the 4.9 (310 hp) I have already. It simply would not be worth it.
Now a 400 hp 6.0l LQ4 or 450 hp LQ9??
Well now, that might be worth looking at.
But wait a minute, wasn't this whole conversation about the possible install of the 4.5 Duramax????