427 Windsor Stroker

[CHANMADD]

The Windsor 427 is not that strong ...Blocks can split.... With the big stroke, one has to keep the rpm kinda below 6000rpm...... So to put a massive high rev cam is pointless. A 351, or 383 has a better rod-to-stroke ratio so it will easily rev way higher. The Ford also has very large main bearings, resulting in high bearing surface speeds, resulting in spun mains. There are solutions, to easy Chevy main bearing size, which is smaller and revs higher. The rod ratio is probably one of the most important overlooked things.

[blykins]

Most 427ci small blocks are built with aftermarket blocks these days. They will support well over 1000 hp.

Rod-to-stroke ratios are pointless. It's just a meaningless number and has absolutely ZERO to do with how an engine revs.

Large main bearing diameters do not result in spun bearings. A 429/460 has the same size mains as a 351W but yet we all use them in extremely high rpm, high horsepower pulling truck engines.

The aftermarket Windsor blocks DO NOT USE Chevy main bearing sizes. None. The aftermarket blocks use Ford Cleveland main bearing sizes.

Too many wives tales and utter nonsense in this thread. Holy cow.

[Streetwize]

Well I remember when Ben Almeda was Drag Racing punched out 410-440" 351's back in the 90's with 2 bolt mains reliably and I really don't think most Cobras on street tires can load the tires hard enough at 2400 pounds to break anything in the motor, at least up to around 575 or so HP. And Ben was turning his motor a lot higher and with a lot more compression than I am. Ben worked with Coast High Performance on some of the first commercial Windsor stroker kits, In fact my motor was the very first rotating kit sold, and in building it I gave them a lot of feedback whish was useful for improving later kits. So i believe Ben (or at least his racing success) was in a way the father of the SBF stroker as we know it.

I agree that the Aftermarket Windsor blocks use the smaller Cleveland mains which I would prefer, I thought several times about building a Dart motor but TBH my car is plenty fast as it is for me and it has been extremely reliable for the 17 years I've been driving it. I'm sure I could make another 100+ hp but it wouldn't really make anymore USABLE torque rolling on from 2500 rpm and all the noticeable power (over what I already have) wouldn't even start to come on until above 3500-4000 and at by that rpm in the Cobra it's already scaring the crap out of my passengers....so... Basically at that size you turn a 500 hp 6000 rpm engine into a 650+ hp 7000+ rpm engine. 90% of the time I'd never use it.