so what are the 351's specs? and is the 302 a windsor? i cant remember

 

302 = 3inch stroke, 4 inch bore
351w = 3.50 inch stroke, 4 inch bore

 

k how come they bore the 408 instead of just keeping the pistons off the 351/302?

 

you can use a 4 inch bore, if you happen to have a new block, but the actual pistons from a stock 351 or 302 wont work due to the wrong compression height of the piston

 

oh ok that makes more sense

 

I have a 408 in my dirt track race car and its making 625 hp. I have a stock block,13.6 to 1 compression,RHS heads and a dual plan intake (Weiand Stealth) on it right now but will be swapping it out for a single plan next season to gain a few more hp.

 

holy crap that much power n/a? with just headsintakeand bore/stroke?

 

If your bore the 351 it would be like making a 302 a 347. You will be messing with the integrity of the cylinder walls stroking it that high. Get a 390 and then stroke that but remember that there is no replacement for displacement.

 

hows that?

 

i haven't heard of anyone having a reliable 427w as a DD. I'm leaning towards the 408w myself but since the price difference is only minimal I'm considering the 427w as my DD.

I'm more of a risk taker so i'll probably go the 427w route. I'm sure when that time comes I'll have alot to say.