My 4.4i is a young pup then with 150k on the original motor and transfer case. The transmission was "new" (reman unit) a few years ago at around 130k. Motor is coming out in early Dec for the 4.6 swap. The crank pulley/balancer and accessory drive pulleys went on today finally. It took for ever for the crank pulley to come in, but its a 4.6 unit, which is good as its a light underdrive piece as compared to the 4.4 crank pulley. Now I'm just waiting on a power steering pump, an aluminum water pump pulley and misc fasteners, hoses, brackets etc. to ship.

I was going to scrap my 4.4 but now I'm leaning toward keeping it for a future project. This is old news to many here I'm sure, but I only recently stumbled on someone's blog about building a "M60B44"...basically a M62 block with M60 heads and the double row and roller guide timing chain set up from the M60. The M60 heads allow for hotter cams from CAT, or others, and a higher compression ratio. The guy said north of 350 HP was easy/ The lifters are the long pole as they limit RPM somewhat, but there are solutions for that too apparently.

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Current
Original owner 2002 E53 X5 4.4i to 4.6i swap
2026 G80 M3 6 spd
2025 G06 X5 50e
Former
1972 Audi Fox
1986 Saab 900S
1996 BMW Z3
1998 BMW E36 M3 Sedan
2004 BMW E46 M3
2006 Audi A3 Quatro
1993 Mopar 318 Jeep Grand Cherokee
2015 V6 Jeep Grand Cherokee