The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

68 C-10 KID · 08-11-2009, 11:41 PM

I have built a hand full of sbc 400's
I have always taken 2 bolt and turned it into a splayed 4 bolt. But with the cost of machine work and caps your only a couple of hundred away from a after market block.

A 4 bolt, blocked filled to bottom of freeze plugs or even more and deck plugs. With Hi nickle good cast that's been sonic tested and checked out should handle 600-700 HP
Counting on you have a real good machinist. But if you want to build a bionic motor, Aftermarket is the way to go.
That's just my opinion.

08-11-2009, 11:41 PM	#2
68 C-10 KID Mean Green Join Date: Sep 2007 Location: Portland, OR Posts: 522	Re: 400 4bolt main I have built a hand full of sbc 400's I have always taken 2 bolt and turned it into a splayed 4 bolt. But with the cost of machine work and caps your only a couple of hundred away from a after market block. A 4 bolt, blocked filled to bottom of freeze plugs or even more and deck plugs. With Hi nickle good cast that's been sonic tested and checked out should handle 600-700 HP Counting on you have a real good machinist. But if you want to build a bionic motor, Aftermarket is the way to go. That's just my opinion.