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Author
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Topic: hey guys so i got a very simple question 351w vs 302
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iSTUNT707
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Member # 11430
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posted
 
 
Would love to here some before and after storys im thinkin bout ditchin my setup and going 351w with a cam and decent heads my thought process is theres no replacement for displacement and everyone seems to blow there nut on strokin there 302 and only goin to 347 what are the vets here opinions
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"toooouchdown RAIDERS!".....greg papa
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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Pure Stang
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Member # 7251
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If you have the money and time 351 base hands down.
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HEART BREAKER
R.I.P Willie Guzman (5ltrsvt) you will be missed brother.
04/24/87 - 11/23/2012
90 lx 347 RIP
86 gt
89 lx- next project
Posts: 6497 | From: San Jose | Registered: Nov 2006
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warhorse58gt
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Member # 7702
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Depends on what parts you have already for a 302. You can always build a 8.2 dart, boss, what ever block you want. And go just as fast.
[ 2014-02-09, 10:17 PM: Message edited by: warhorse58gt ]
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WOLFPACK RACING
With guns, we are 'citizens'. Without them, we are 'subjects'.
83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!
Posts: 4200 | From: 209 | Registered: Jun 2007
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iSTUNT707
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Member # 11430
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posted
quote:
Originally posted by warhorse58gt:
Depends on what parts you have already for a 302. You can always build a 8.2 dart, boss, what ever block you want. And go just as fast.
Ok im just a normal guy lol i should have added that i was planning on getting the motor from pic n pull
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"toooouchdown RAIDERS!".....greg papa
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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94 fobra
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Member # 8867
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posted
Make sure it's a roller motor
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Im done with this ford vs chevy fight with "cafords" members. Aka big block 66 f100 but she's no longer:(
Posts: 2996 | From: Stockton | Registered: Jan 2009
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warhorse58gt
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Member # 7702
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posted
quote:
Originally posted by iSTUNT707:
quote:
Originally posted by warhorse58gt:
Depends on what parts you have already for a 302. You can always build a 8.2 dart, boss, what ever block you want. And go just as fast.
Ok im just a normal guy lol i should have added that i was planning on getting the motor from pic n pull
Ok then yes. I would do a 351w. A stock bottom end with a ok cam and some good heads you can make 500+ easy. Still on pump gas. Just spend your budget on the heads, cam, and intake.
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WOLFPACK RACING
With guns, we are 'citizens'. Without them, we are 'subjects'.
83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!
Posts: 4200 | From: 209 | Registered: Jun 2007
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94 fobra
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Member # 8867
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posted
quote:
Originally posted by racsirx:
quote:
Originally posted by 94 fobra:
Make sure it's a roller motor
I disagree, easy to convert a block to be a roller setup
http://forums.corral.net/forums/5-0-5-8-engine-tech/1352369-must-read-psa-windsor-roller-block-guys.html
Hahaha yea your right don't buy a roller motor buy a regular one and convert it that makes wayyy more sense based on the fact he said he was buying it from pnp and they cost the same...we all know it's not a difficult task to convert but thanks for reassuring us
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Im done with this ford vs chevy fight with "cafords" members. Aka big block 66 f100 but she's no longer:(
Posts: 2996 | From: Stockton | Registered: Jan 2009
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94 fobra
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Member # 8867
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posted
And its funny that the guy that posted that whole thread halfway down says he still uses the f4te blocks that aren't cracked...
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Im done with this ford vs chevy fight with "cafords" members. Aka big block 66 f100 but she's no longer:(
Posts: 2996 | From: Stockton | Registered: Jan 2009
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Gnari-Garage
CAFords OG
Member # 3164
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posted
I'm a firm believer of " there is no replacement for displacement"
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2017 McLaren 570GT
2019 Audi S5
2017 Tundra 7" Lift, 37" Tires
Posts: 4017 | From: 916-sacramento | Registered: Aug 2003
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70stang351w
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Member # 9948
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Search for a 69-70 351w can convert it to roller if you want. they are the strongest out of the stock blocks
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1996 GT VERT /32v MOD - SOLD
1970 Mustang Coupe M-Code 351w
Posts: 1419 | From: 925 | Registered: Apr 2010
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Anderthizzle
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Member # 7910
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What would be better a 347 or 351? Sorry to get off subject. But always wonder what would be better.
Posts: 1056 | From: Here and there | Registered: Sep 2007
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Greasy
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Member # 5258
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posted
quote:
Originally posted by 94 fobra:
And its funny that the guy that posted that whole thread halfway down says he still uses the f4te blocks that aren't cracked...
Yup, I have one of his strokers using a F4TE block...
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'93 Cobra-Coyote Powered
'03 DSG Cobra
'13 Dodge Cummins
'14 Rubicon X
Posts: 3272 | From: North Dallas | Registered: Jan 2005
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iSTUNT707
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Member # 11430
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posted
quote:
Originally posted by Anderthizzle:
What would be better a 347 or 351? Sorry to get off subject. But always wonder what would be better.
My question exactly!!!!
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"toooouchdown RAIDERS!".....greg papa
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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phildog
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Member # 1214
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A 347 is a lighter and physically smaller package that is only giving up 4 cubic inches. It also uses 302 type parts which will always have a larger market, hence, parts are cheaper.
Posts: 1554 | From: 510 | Registered: Apr 2002
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iSTUNT707
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Member # 11430
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posted
quote:
Originally posted by phildog:
A 347 is a lighter and physically smaller package that is only giving up 4 cubic inches. It also uses 302 type parts which will always have a larger market, hence, parts are cheaper.
Costs a grip to stroke out to a 347 u can use 302 parts ona 351 and heads with machining can fit just diff diameter bolt holes
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"toooouchdown RAIDERS!".....greg papa
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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phildog
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Member # 1214
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Haha, this argument will never end! Notice that I made no mention of price in regards to the internal parts of the motor itself. There is a whole list of 351w specific parts which will not transfer over from a 302 based motor.
There will always be die hard fans on either side. Just like the "IRS vs solid axle" pissing matches.
Do your research; consider price, value, weight, size, durability, and power potential.
Posts: 1554 | From: 510 | Registered: Apr 2002
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iSTUNT707
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Member # 11430
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posted
quote:
Originally posted by phildog:
Haha, this argument will never end! Notice that I made no mention of price in regards to the internal parts of the motor itself. There is a whole list of 351w specific parts which will not transfer over from a 302 based motor.
There will always be die hard fans on either side. Just like the "IRS vs solid axle" pissing matches.
Do your research; consider price, value, weight, size, durability, and power potential.
Im not on either side im jyst searching for answers lol
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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Beastly GT500 TVS
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Member # 9723
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posted
Go 351w all the way its a great starting point for easy power.
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91/E85 tune by SHAUN AT AED
700HP/700TQ ON E85
10.78@129MPH 1.644 60FT
WWW.AEDHP.COM
Posts: 893 | From: 707 | Registered: Jan 2010
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racsirx
CAFords OG
Member # 1710
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posted
How much power are you trying to make? A stock 302 block is good for 450hp but if you want to make more than that I would get an aftermarket block or 351, also I would rather have a 331 than a 347.
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88 Saleen #564
88 GT 331 NOVI2000
88 Coupe TURBO 9.75@142
95 Cobra R #75-SOLD
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GOD'S NOT DEAD
Posts: 20750 | From: Concord & Pittsburg, CA | Registered: Aug 2002
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iSTUNT707
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Member # 11430
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posted
quote:
Originally posted by racsirx:
How much power are you trying to make? A stock 302 block is good for 450hp but if you want to make more than that I would get an aftermarket block or 351, also I would rather have a 331 than a 347.
Im wantin mid 400s with a strong block i already have a t3550 so im pretty sure this year i can push it
Posts: 170 | From: fairfield/vallejo/cordelia | Registered: Nov 2011
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warhorse58gt
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Member # 7702
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posted
quote:
Originally posted by iSTUNT707:
quote:
Originally posted by racsirx:
How much power are you trying to make? A stock 302 block is good for 450hp but if you want to make more than that I would get an aftermarket block or 351, also I would rather have a 331 than a 347.
Im wantin mid 400s with a strong block i already have a t3550 so im pretty sure this year i can push it
I made 430whp all motor on 91 piss gas and 8.5 to one comp. With shorty headers and 2 1/2 exhaust. You can do what mine does on a stock short block easy. Well you need a cam. But other wise a stock short block.
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WOLFPACK RACING
With guns, we are 'citizens'. Without them, we are 'subjects'.
83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!
Posts: 4200 | From: 209 | Registered: Jun 2007
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v-town coupe
fordologist
Member # 2771
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posted
I'm currently in the same boat. since I am planing on getting a different radiator , re-doing exhaust etc. i'm really considering going 351w so that way the possibilities are endless later down the road and i wont have to pay for all the conversion stuff i.e. pulleys, headers, intake, distributor etc.
I have considered stroking a 302 but unless you have an aftermarket block you wont really see more then 347 cubic inches. I would agree with lee, a 331 to me would also be a better option due to a friendler rod angle, and the fact the wrist pin wouldn't be so goddamn close to the oil control rings and i mean fucking close! which is why there is so much debate on the 5.315 rod in a 347 vs the 5.4" rod to help pull the wrist pin away from the oil control landing.
If you do decide to go 347 buy good quality forged pistons so that thin strip of ring landing for the oil control rings is as strong as possible.
an after market block really doesn't help in the stroke department where you actually gain cid is in the bore size. for example you will see a lot of people saying 306 around here which is actually a 302 bored .030 over from the stock 4.00" bore making it 4.030" with a max of probably 4.060 with any stock 302 block provided its in good shape. some machinist believe for the most part a .030 over bore is the bare minimum and to follow that guideline you would only get a total of two builds out of a stock block. once again there are lots of variables and this is not necessarily always true different discussion different day. but with an after market block you will see bore sizes such as 4.125 up to 4.2 ish that's where you start to see the short deck 8.2" block 363 cid strokers.
All depends on what go fast parts you already have and what your budget and power expectations. i'll never forget when i built my first motor. the guy at the machine shop said: make 3 columns, what you have, what you want to achieve and how much you have to spend and we will figure it out! LOL
[ 2014-02-13, 10:43 AM: Message edited by: v-town coupe ]
Posts: 4597 | From: the V-town | Registered: May 2003
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v-town coupe
fordologist
Member # 2771
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posted
347 on the left 331 piston on the right notice the lower section (oil control ring landing )has some meat above the wrist pin? and the 347 on the left does not.
Posts: 4597 | From: the V-town | Registered: May 2003
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