Rare 3951509 sbc 400 for sale. Stock form, comes with crank/rods/pistions. No damage to block what so ever. $500 obo.
It's a 2 bolt block so you can have the stronger splayed 4 bolt caps installed which are stronger then regular 4 bolt blocks and it only has 2 freeze plugs per side unlike the weaker 3 per side 400's.
The white stuff is lithium grease to keep moister from rusting it.
It's a 2 bolt block so you can have the stronger splayed 4 bolt caps installed which are stronger then regular 4 bolt blocks and it only has 2 freeze plugs per side unlike the weaker 3 per side 400's.
The white stuff is lithium grease to keep moister from rusting it.