Built a 353 SBC once with a 400 bore and 327 crank with main spacers. Been a while back and I don't remember all the details, but the guy that ran it loved it. Great little engine, too bad the GM cranks are total junk..even the "steel" cranks. I bet most don't know that a 429 Ford is basically a "destroker" 460. Same block, bore, rods...pistons are a bit different and the stroke is shorter. Same with several other makes of engines. 400 Mopar is basically a .020" over 440 with the short stroke of a 383. Weird how Chrysler thought that the 400 should have a larger bore than the 440?!

There was an article written in National Dragster a while back dealing with extreme RPM of the Pro Stock classes. 10,000 RPM is now the norm where it was once un-heard of not too many years ago. Advantage of higher RPM is that you can run more rear gear which gives you greater mechanical advantage, which gets the car moving quicker....not necessarily faster, but quicker. Quicker=better ET.

<font size=-1>[ This Message was edited by: mavman on 1/6/05 9:34am ]</font>

<font size=-1>[ This Message was edited by: mavman on 1/6/05 9:35am ]</font>