Quote:
Originally Posted by Joshua Paul
I recently got a decent deal on a 455 that was built a year ago and just sat in the corner of a garage. It has the 4X 1H heads (I believe 114 cc) and a comp cams XE250H-10 cam shaft. Motor was never ran. I intend to replace the head gaskets as the owner had pulled one off for pictures. I will also pull the cam to re-lube as it sat for over a year.
Questions or guidance:
1. I have a set of #16 75 cc heads currently on my tired 400. Rebuilt built them years ago and probably only have a thousand miles on them. Which would you use?
2. The xe 250 seems a bit small. Recommendations.
Currently have a slightly above stock stall on the torque converter, TH350 transmission, and 2.73 rear gears.
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If it is truly a “stock” rebuild the pistons are .015-.020 “in the hole”. With the 4X heads you’ll be lucky to have a 8:1 c/r. A time tested combination would be 6X-4 heads milled .040-.045( 85-87 cc) with the 041 or comparable camshaft along with Rhodes lifters. You will probably get an honest 400+ hp/500 ft-lbs at the flywheel and a more manageable engine that will run all day on 91-93 octane fuel.