WebJan 2, 2008 · The 509`s just got the rap of being the best just because they were the more common 2 bolt block. I looked over my block pretty good and looked at a 509 block … WebJun 7, 2006 · The 509 block IS the best block. It has CONSIDERABLY more material along the main webbing and pan rail than an 817. On a 400 based block the index of the main …
How to Build a 421 SBC - Hot Rod Forum
WebApr 10, 2024 · 400 chevy block 2 bolt 509 casting will make a 020 oversize lifter bores have been bhj bored for bushings rod clearanced for 4 inch stroke hot tanked filled with hard block filler. do NOT contact me with unsolicited services or offers; post id: 7608799520. posted: 2024-04-10 08:59. ♥ best ... WebOct 13, 2011 · Veteran Member. Nov 10, 2008. 169. Oakfield, WI. I bought a std bore 400 last fall for $150. I think I got lucky as far as price goes but it was a 509 and was actually standard bore. It had one goofy looking lifter bore but my machinist cleaned it … bambusa dameliga kampprogram
400 sbc strength - Don Terrill’s Speed-Talk
WebApr 24, 2024 · Car. 72 Chevelle, 77 Nova. Dec 12, 2016. #4. Yes it will be a 2 bolt main. If desired the caps could be changed to aftermarket 4 bolt caps that use a splayed outer bolt configuration and having the block aligned bored. It is said that the 2 bolt main block is stronger than the factory 4 bolt. I built a factory 4 bolt main 400 using ARP main studs. WebFeb 5, 2012 · #817 which is a 72-80 2 bolt block is not that desirable to make good hp as it is the weakest but have seen some 475/500hp 400's made from these #509 a 2 bolt block and is the best for making serious hp out of and easiest to convert to splayed main caps #511 which is a 70-72 4bolt block also high nickel content is very good for high perf builds WebAug 3, 2009 · Big Angry Hillbilly said: I spoke with a guy at Lunati and he is building a 427 (434, whatever) with a 509 casting stock 400 block. 4" stroke with a 6" rod. He said he had to clearance a bit of the pan rails. Mine is a 436 in a STOCK 400 block with a 6" rod so he has pretty much the same setup as me:-D. bambusa cycle