OK OK....something technical
Why go to a stroker??
Well, for a start you get displacement, which as we all know there is no replacement for.
At the same time as big-block cubes you get to keep the lighter weight of a smallblock, plus the distribution better for handling (yes, I will be going round corners!)
Also the longer stroke produces more torque, which again as we all know is what it's really about on the street. The idea of the engine is to have torque on demand at any time. No good having to wind it up before it delivers (that's fine on the strip of course).
Some people prefer shorter strokes because they rev higher and ultimately revs equal horsepower. But this will rev easily to 6K+, could probably buzz it to 7K, but why bother. RPM Ruins Peoples Motors, the higher you rev the proportionately more stress you put on the engine, and for a street motor I wanted lots of torque & power down low, not too worried about squeezing the last drop at 7500rpm.
Stroking a motor can also increase the side loads on your pistons, but the rod ratio on a 4" stroke SB is no worse than many production engines, so that's not an issue.
You want good breathing on a motor like this (although it would still make power with ported stock heads), so I went for W2's, Chryslers famous 'Pro Stock' head from the early 70's. Bang for the buck, you can't beat them. OK they're cast iron, so they weigh more than ally, but like-for-like a cast head will make more power than ally anyway (let's stir the pot) and these ones flow better than a ported Edelbrock head (actually a stock W2 would flow more than some ported EB's). They've been ported and flowed at 300 cfm, plenty for my needs. Probably overkill for a standard street SB, but a stroker will lap em up!
Lastly, with the increased stroke and displacement you can use a much larger cam and it will still idle nicely and behave itself. The same cam in a standard displacement SB would be much more peaky and idle rougher.
And if nothing else, it's a bit different! As far as I'm aware mine was the first SB stroker over here? It won't be the first to run
![Very Happy :D](./images/smilies/icon_biggrin.gif)
(we know who you are...) but they ain't exactly thick on the ground and it's nice to travel a slightly different road. Wait until I EFI it!
Alright? there is some technical stuff in there......might have to reuse some of this in a prgress report.