what's the difference top- vs sideoiler

[tmax5151]

differents between 390 from 427

[patrickt]

Look for the cross-bolted mains that a 427 has. Here's a shot:

[undy]

As Patrick said, look for the cross bolts (bolt heads) there'll be three of them on each side of the block just above the oil pan rail. If the engine's in the car, jack it up and you should be able to see it from underneath. This'll just indicate whether it's a 427 (could be side oiler or top oiler). Heck it could even be an "cross-bolt" aftermarket mod to a 390 or such too.

Dave

[patrickt]

Originally Posted by undy

This'll just indicate whether it's a 427 (could be side oiler or top oiler).

It will always be a 390 or something worse. It's only a 427 in fairy tales and other people's posts. If it's yours, it'll be cracked truck block.

[86Sebring]

Originally Posted by patrickt

It will always be a 390 or something worse. It's only a 427 in fairy tales and other people's posts. If it's yours, it'll be cracked truck block.

yup, don't get too excited when the ad says 427 side oiler