Can someone give me a quick understanding of the following 1. What motors are based on the 302 Block? 2. I "hear" people talking about 351 such and such parts or this or that for their 302 Are there 351 parts that can go on a 302? si a 351 a punched out 302 is it a larger bore and increased stroke? 3. What is a (347 ) Stroker, is that somehow making the stroke longer on a 302 to get more displacement? 4. What is a short block compared to a long block 5. Small block and big block Is the 351 block a big block or small block? If a big block is it the basis for a 427 ? I have to say with this 302 swap I am doing all of you who have been helping me have been so patient with this novice , and are a great bunch of guys! I am learning so much but yet know so little still.
Ok here goes,Crash course. 1. Ford 260 289 302 351 are all widnsor family SMALL BLOCKS 2.351 is a windsor as well(not to be confused with a cleveland) same architecture but the block is different(Deck is taller)block is wider because of increased deck height.(thats how they got the extra cubes) 3.Yes 302 bored 30 over with a longer stroke crank/rods makes a 331/347 4.A short block is the block and all internals/no heads A long block is all o fthe above with cyl heads as well. Windsors are all small blocks(so is cleveland) 5.351W and clevelands are both small blocks.351Ws' are used to make 427 strokers.Clevelands not so much. Hows this for starters for you.
OK here goes 1.FE series 330/360/390/406/427/428 2.385 series 429/460 there are more of these(brain frt) 3.MEL series(mercury edsel lincoln)410 430 361 etc... 4.Then we have the 351-M and 400 both are based off the 351 cleveland 5.Then we have the BOSS 302.Based on the windsor platform in appearance only. windsor type block(much modified for strength) and cleveland style heads.Next to nothing other than the crank/rods/ will work in a regular W block.Pistons are different,cam prifiles are designed for canted valve heads(cleveland heads). How this so far.I know I have made omissions here.Others will chime in to add/correct.Enjoy. Yes the 351 W is slightly wider due to the increase in deck height which is minimal but enough to make it hard to stuff in a mav/comet and have adequate header clearance.
"OK here goes 1.FE series 330/360/390/406/427/428" FE series thats a big block? so you can have a 427 of the FE block and off the small block 351 W? ' Longer stroker would make power at lower RPMS right because it is a longer stroke, or do I have that backwards
You are correct they do make more torque down low.Cam selection as well as head designe and induction help to determine rpm potential.They generally can rev higher due to the strength of the components.Longer strokes take longer to rev up due to the extra mass of longer con rods/crank throws. Yes you can have a big block 427FE and a small block 351 W based 427 stroker. FE engines are big block engines.
Stroker motors make more low RPM torque due to increased displacement.("Torque"thats what shoves you back in the seat and launches you down the 1320)Stroker motors make top end HP when built to breath at high rpm.The engines ability to move air is what makes it rev high.Cam selection,head designe,intake/carb,valve train durability and exhaust flow as well as bottom end strength all contribute to its ability to live at high rpm.You can run a stock 302 to 7500 rpm just dont expect it to stay together for more than a minute or three.A big brick on the pedal experiment will prove this out if you want to try it.Hope this helps you.
