O'reillys vs Advanced Auto Parts Ford 390

[Jzbochat]

I was looking to find a rebuild 390 to put in my truck because my current one is getting tired. The 390 is becoming harder to find, but I found that O'reillys sells a 390 long block and so Does Advanced. My question is, which is better? I head that O'reilly's 390 is a bone stock rebuild, whereas Advanced is said to use some performance parts in their rebuilds. Anyone have any experience with one of these motors?

[Manny]

There probably will be little difference from the two engines. Both from a volume re builder such as precision, jasper, etc etc. If they have a warranty and a decent price they will fair you well. However you could also buy a core and rebuild your own engine with a better quality product you can be proud of. Whats the pricing of the motors and are you opposed to building your own? My

[Ranchero50]

Volume rebuilders will also do the bare amount of work to bring a block up to spec and do extra work to repair a damaged block. I've seen sleeves and other stuff in basic 302's in the past. Oddball quality and deburring and my Autozone sourced 5.0 crank was bent when I pulled it out of the box.

[Jzbochat]

I would love to rebuild the engine from the block up, but due to a lack of time, I am forced to drop a long block in the old one's place.

[Manny]

I would love to rebuild the engine from the block up, but due to a lack of time, I am forced to drop a long block in the old one's place.

If you can save your core and its a good one try to. Remember that the long block your buying will be built by a company where speed and low cost is key. I had a friend run a 390 long block in his 69' forever. Just remember they are not terrible but not a "High Quality Engine" Just a good engine. Whichever engine you wind up with break in your cam right use good high zinc oil and i hope it fairs your great!!