347 Stroker or plain old 351w??

[Apsychotic]

Hey all, I'm thinking about getting some more Ci's, and a few more Hp's, My question is, Should I go with a 351 Windsor with an aftermarket cam, intake, and carb, Or, should I go with a 347 stroker kit, and build my 302? What are the differences? dependability? Which is easier? any info is appreciated!

 

[dmoody]

That is a tough call, but only because stuffing a 351w in a II is very difficult. 331ci is as high as I would go with a 302. If I wanted more cubes, then I'd go through the pain of installing a 351 in the II.

d

 

[1badII]

A 347 is going to have better internals than a stock 351, too. I'd say go with a 347 because it will drop in place with no additional modifications and is close enough to a 351 in cubic inches. The money you would save by using stock internals on a 351W would be offset by the other modifications needed.

 

[78pinto]

why not a stroker 351? 393, 408, 410, 418, 427 just pic what one you want! A 393 is fairly cheap, stroker crank, .30 over 302 piston with a stock length rod i believe. 427 with a stock block is scary....but people do them. Just my .02 cents!

 

[1badII]

why not a stroker 351? 393, 408, 410, 418, 427 just pic what one you want! A 393 is fairly cheap, stroker crank, .30 over 302 piston with a stock length rod i believe. 427 with a stock block is scary....but people do them. Just my .02 cents!

What he said, except if you go with a 351 stroker, you will definately have to beef up your driveline and stiffen the body up, possibly custom headers, too. I'm going with custom headers instead of the Hookers that Gael used because my combo is going to require 1 7/8" or 2" primaries.

 

[Mstng2]

It's all a matter of dollars vs how much go fast you want. All it takes is money lol

 

[78cobra347]

My 347 rocks nothing around here in small block N/A trim can touch it!!

 

[Blue Thunder]

All other things being equal, (heads, cam, intake, etc) A stroked 332" 302 will outperform a 351W with a stock stroke. The internal reciprocating mass of the 351W is a LOT greater than the 302's, and the main bearing's surface area is overly high on the 351W, creating excess friction and causing a durability issue at very high RPM, as well as costing power.

After you go through the hassle of installing a stock-stroke 351W, and dealing with the increased weight of the 351W, you'll end up with a slower car than if you'd just built a stroker 302. (I'm not really comfortable with those 347" kits, because of the poor rod/stroke ratio. With 5.5" rods, and 3.25" stroke, you end up with a 332" motor that retains the stock r/s ratio of 1.69:1, giving you more efficiency, power and longevity. Even so, a 347" will annihilate a stock-stroke 351W)
When I stab the throttle in my car, the 332" will rev to 7000 virtually instantly. (Whether it's in neutral or in gear matters not)

Edit: Of course, if you build a 408" 351W, massive cubes will begin to win out over efficiency, and it will beat up the stroker 302, all other things being equal.

 

[78Mach1]

I went with the 331 kit when I had the motor built up for the Mach 1. So far I still don't have it "legally" on the street yet(Just trips back my dead end road, about a 1/4 a time ) but can't wait. it seems REAL strong and torquey, ie lots o fun, plus none of the hassles of installing the 351with an even bigger shoe horn

 

[Blue Thunder]

http://www.worldofwargod.com/sitebuildercontent/sitebuilderfiles/stangii_2.mpg
http://www.worldofwargod.com/sitebuildercontent/sitebuilderfiles/stangii_1.mpg

Stroked 302.