WebJul 3, 2024 · If a 400 block comes in my shop to machine I get paid 100% up front as I have seen those blocks crack from the head bolt hole to the cylinder when torque plate honing which makes the block junk as sleeving a 400 OEM block is not worth the time and effort. Shop Tour and whats going on F/B Page wht73 Registered Joined Mar 19, 2004 3,598 Posts WebMay 17, 2010 · my 400 509 block is .040 over. I have it tagged as a 406 but the math says 408.8 Drive break repair repeat Enough tools, parts & money can repair all but the loose nut behind the wheel Ryan V64SS Registered Joined Jul 8, 2007 4,168 Posts #4 · May 16, 2010 at that size it is always important to sonic check the bores.
how much hp can a 2 bolt sbc 400 handle? (377 build)
WebJun 15, 2004 · Although I don`t recall the casting numbers, the block had "509" casted on it under the timing chain cover and on the rear of the block, it was also a 10 20 block, indicating it had nickel and tin mixed with the casting which are more disireable. it was a 2 bolt block out of a 76 station wagon. 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. eatinghealthy.com
My 511 block SBC 400 turned out to be a 2-bolt block...
WebDec 16, 2013 · Using a factory 400 production block as the basis, Henderson didn't alter Chevrolet's basic layout, but instead put together the familiar 406 combination arrived at by retaining the factory... WebApr 5, 2006 · Craggar is right, a 509 block is a stout 2-bolt main 400 block (I'm lucky enough to have one of these). As far as how much it can be bored out, you really need to get the … WebFeb 14, 2012 · i think 11:1-12:1 is ok for Pump Premium fuel and Racing fuel. but i really dont want waste good money.. but i read alot people had no problem with 509 cast on 406 up … compacting garbage collection