347 or 351?

Discussion in 'Technical' started by Comick76, Mar 26, 2010.

  1. Comick76

    Comick76 Grease Monkey

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    This isn't technically a Comet/Maverick question but Ford never the less. I'm putting together a 71 Torino for a friend and I'm at a crossroad kind of point. I have in my goody bag a bunch of 302 parts and 1 351 windsor short block. For about the same price I could build an aluminum head 347 ci or an Aluminum head 351w. This car will be a daily driver/cruiser (no race use) with an e4od automatic, 8 inch 3.2ish:1 rear with a cone type LSD. Max Torque needs to come in early(well early for me) I've never built a 347 and worry(to a small degree) about longevity but, I would really like to build one just for the experience. What do y'all think? Are the 4 extra cubes worth it?
     
  2. RMiller

    RMiller My name is Rick

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    I'd stroke the 351 and stuff it in there.
     
  3. Comick76

    Comick76 Grease Monkey

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    Yeah I'd love to. But the 351 heads and a stroker crank would add quite a bit of dollars to the build.

    I already have a decent set of heads for the 302. so for the 347 I would need a crank, rods, and pistons. I have no heads for the 351 and don't trust the only machine shop in town to drill the 302 heads for the bigger head bolts and a 58cc chamber on a stroked 351 would require some major octane.
     
  4. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    Build a 408 out of the 351 and you will have all the torque you need down low for a cruiser with some left over.
     
  5. bmcdaniel

    bmcdaniel Senile Member

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    After cracking two stock block 347s I pretty much decided I would go with a 351 next time I wanted more cubes.
     
  6. PaulS

    PaulS Member extrordiare

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    The 351 fits easily, builds well and you can get 75 more cubes with it than you can with the 347 which is already built to the maximum.
     
  7. greasemonkey

    greasemonkey Burnin corn

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    The 351 is so much simpler and will make the same or more power.
     
  8. comet416

    comet416 Member

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    you could make a 416 ci windsor use a 400 crank and chrystler rods. Keith black makes a dish piston w ith a 58 cc head 10:5 to one drill your own heads done it dozens of times never had a problem. pulled as much torque as my big block 460.
     
  9. JDHill

    JDHill Member

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    :hmmm: I have heard if it's a complete roller engine you can build a 427 and get as much as 550hp from it. :thumbs2: if that's possible with the engine you have and it's what you want.
    Than again the 302 can be built to a 363, big bore, w/500hp. These are stroked engines of course :yup:.
     
    Last edited: Mar 28, 2010
  10. tim keck

    tim keck truckdrivintrailertrash

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    Agreed..:)
     
  11. bmcdaniel

    bmcdaniel Senile Member

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    That would require an aftermarket block.
     
  12. JDHill

    JDHill Member

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    (y) I thought there was some reason older blocks couldn't be used.
    Thanks :bouncy:
     
  13. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    The pre roller blocks are less desirable since the roller cams can make more RPM. The older blocks are stronger. The tall deck 302s' made from 73 to 76 are great for building strokers since you can use a piston without the oil ring in the pin bore...Makes for a more stable ring pack/piston.
     
  14. Thrashin302

    Thrashin302 Member

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    When the time comes time for me im strokin to a 347, i figure if a guy uses good parts and builds it right it should last for a good while. The 347's can be strong, but when people start adding things like a supercharger and/or nitrous to a bored out block that was already small to begin with thats when the problems are gonna start. but if it was me and i was doin a Torino i'd just build a pretty wild 351. The 351 is a stronger bigger block that was designed for more power than a 302. So instead of trying to squeeze every ounce of power out of the 302 why not use the 351 since you already have it and make the same or more power out of a stronger block.
     
  15. baddad457

    baddad457 Member

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    Just do the 351W and add the heads/cam & intake. I guess the others are hard of hearing. It'll make plenty of power.
     

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