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Low69CST · 05-19-2003, 10:03 PM

4 bolts have 3 freeze plugs and 2 bolts have 2 freeze plugs. I built a 4 bolt block. I had a 2 bolt block but didn't have the cash for splayed caps. So I stuck with the 4 bolt, I'm not drag racing, so my ocasional heavy foot shouldn't hurt it. I can't remember any other external clues to whether its a 400 or not, Balancer size is only way i know. You could tell the guy to yank off the heads and measure the bore, stock is 4.125. It would be a good idea to check the cylinder walls anyway, if it would have to be bored bigger than .030 I would stay away from it.

05-19-2003, 10:03 PM	#9
Low69CST Registered User Join Date: May 2000 Location: Frankfort, Kentucky, USA Posts: 2,163	4 bolts have 3 freeze plugs and 2 bolts have 2 freeze plugs. I built a 4 bolt block. I had a 2 bolt block but didn't have the cash for splayed caps. So I stuck with the 4 bolt, I'm not drag racing, so my ocasional heavy foot shouldn't hurt it. I can't remember any other external clues to whether its a 400 or not, Balancer size is only way i know. You could tell the guy to yank off the heads and measure the bore, stock is 4.125. It would be a good idea to check the cylinder walls anyway, if it would have to be bored bigger than .030 I would stay away from it. __________________ '69 CST Short fleetside Lowered, 400 small block, 700R4, 4 wheel disc brakes, front sway bar & rear camaro sway bar (in progress) '87 V10 4x4 Short Fleetside Quad Suspension and Dual Tanks