About to buy a 400sbc - what to look for? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

sixnine · 04-09-2008, 04:59 AM

I'm going to look at two Chevy 400 small blocks tomorrow. One is a two-bolt main, but is a high-nickel 509 block. It is a short-block minus heads and intake. The other is a 4 bolt main bare block. Both blocks have original bore sizes. Is the high-nickel block worth taking over the 4 bolt block? Also, this is my first used engine purchase - so what should I look for? The 400s were prone to cracking (I think?) where should I look to see if either are cracked?

Thanks in advance for any advice.

04-09-2008, 04:59 AM	#1
sixnine Longtime Member Join Date: Oct 2002 Location: Over Yonder (DFW) Posts: 171	About to buy a 400sbc - what to look for? I'm going to look at two Chevy 400 small blocks tomorrow. One is a two-bolt main, but is a high-nickel 509 block. It is a short-block minus heads and intake. The other is a 4 bolt main bare block. Both blocks have original bore sizes. Is the high-nickel block worth taking over the 4 bolt block? Also, this is my first used engine purchase - so what should I look for? The 400s were prone to cracking (I think?) where should I look to see if either are cracked? Thanks in advance for any advice. __________________ Rokcrln - *"I'm a major car addict so trying to go as low buck as possible is like asking a coke head to use flower to save money."* 1972 C10 Short Step -http://67-72chevytrucks.com/vboard/s...d.php?t=261405



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