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Showing results for tags 'overbore'.
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Good afternoon to everyone, I have a 230 cid flathead six in my '49 Dodge Power Wagon, and I'm looking at doing a rebuild. The cylinders are currently at 0.060" oversize, and I'm wondering how big a deal it is to go 0.080" oversize. It appears that Silvolite makes pistons of this oversize, based on info from their website, although I have not inquired with them to make sure they actually have them. I intend to keep the truck for a very long time (already had it for 25+ years), and I want it to be reliable, and hence don't want to have to rebuild the engine again. With that in mind, will it be risky to bore to 0.080" oversize? Another thing to be aware of is that I intend to make a few performance mods to give it more oomph, such as dual-carb intake manifold, header (probably Langsdon's, as his are the only ones I know of), maybe electronic ignition, and a cam, probably from Vintage Power Wagons. I'm not sure if that would be pushing it, in terms of reliability, when coupled with an overbore of 0.080. I don't intend to do any high-rpm stuff, but I will at times cruise for extended periods at 3000 rpm (which will get about 60 mph with my gearing and tires), but probably never more than that. A lot of time will spent at lower rpm's, like 1500 - 2000 rpm, when I'm offroad, in case that makes any difference. I will make sure the rotating components are well-balanced. I will eventually post this same question on the Power Wagon forums, but it seems that some of you guys do more of the "non-standard" type of stuff, including overboring of engines than the guys on the Power Wagon sites, so I figured I'd start here. Thanks! Matt