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Author
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Topic: 351W questions?
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Hell_Fish
Gearhead Posts: 513
From: Austin, TX.
Registered: May 2002
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posted 12-16-2002 01:47 PM
  
Is the 351W crank any different than a 302? Are the rods and different? After 69 were the heads any different? A machine shop near my house says no, but I have my doubts.
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SteveLaRiviere
Administrator Posts: 30261
From: Saco, Maine
Registered: May 99
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posted 12-16-2002 01:52 PM
Yes, the crank, the rods, and the heads are all different. I'd lose that machine shop in a heartbeat!------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Be sure to remember our sponsors, Mustangs Plus, NPD, and Osborn Reproductions.
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rm302 boss
Moderator Posts: 283
From: Austin Texas
Registered: Dec 2002
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posted 12-16-2002 02:09 PM
I agree with Steve loose that shop...
Here are the #'s
block;a 351 has 0.275 in higher deck
piston's are 0.136 higher
rods; 302 rod is 5.090 in length, 351 is 5.956 in length
Crank; stroke on a 302 is 3.00
stroke on a 351 is 3.50
main 302 2.2486-351 3.0000
rod 302 2.1232 351 2.3110
heads after 74 are all equiped with air inj ports in the exhaust and after 78 they had non adjustable rockers.
as you can see not much will inter change.
but for more data pick up a copy of ( HOW TO REBUILD YOUR SMALL BLOCK FORD) it will have all the #'s you could want.
Rene
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1970 Boss 302
1990 Taurus SHO
1985 Mustang GT 351W
1995 Land rover Disco
1980 Triumph Spitfire (auto-X car)
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Hell_Fish
Gearhead Posts: 513
From: Austin, TX.
Registered: May 2002
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posted 12-16-2002 02:18 PM
Could a 351 crank and rods be used to make a mild stroked 302 or is it not worth it? As for that shop, I only use them for basics. Reason I ask about this is I got a 351W minus heads with an extra crank and rods w/ pistons (Thanks Alton  ) and a spare 302 block. If the stuff could be made to work together I could (a) build a new engine for the 69 or (b)sell the parts to my uncle for a T-bird he is building.Thanks,
Dustin
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SteveLaRiviere
Administrator Posts: 30261
From: Saco, Maine
Registered: May 99
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posted 12-16-2002 02:21 PM
Now, the 351W has larger main bearing journals, for one thing.------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Be sure to remember our sponsors, Mustangs Plus, NPD, and Osborn Reproductions.
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Hell_Fish
Gearhead Posts: 513
From: Austin, TX.
Registered: May 2002
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posted 12-16-2002 02:23 PM
But, couldn't those be machined down to fit a 302?
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Hell_Fish
Gearhead Posts: 513
From: Austin, TX.
Registered: May 2002
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posted 12-16-2002 02:26 PM
quote:
after 78 they had non adjustable rockers.
They had non-adjustable rockers in 69. So, some came with a adjustable set-up?
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rm302 boss
Moderator Posts: 283
From: Austin Texas
Registered: Dec 2002
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posted 12-16-2002 02:31 PM
quote:
Originally posted by Hell_Fish:
But, couldn't those be machined down to fit a 302?
It would a lot easer to just get a stroker crank kit from Summit.
your front and rear seals will not work with the main caps and if i remember right the balence will be all wrong. the only parts you can swap with a little work are the heads.
Rene
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SteveLaRiviere
Administrator Posts: 30261
From: Saco, Maine
Registered: May 99
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posted 12-16-2002 02:36 PM
You'd be whittling down 3.000" journals to 2.248" Not worth it.If I were you I'd sell or stash the 302 block, build the 351W, sell the 351W heads and buy aftermarket heads. ------------------
'70 Mustang Mach 1 - '72 Mustang Sprint - '94 F-150 Be sure to remember our sponsors, Mustangs Plus, NPD, and Osborn Reproductions.
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rm302 boss
Moderator Posts: 283
From: Austin Texas
Registered: Dec 2002
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posted 12-16-2002 02:37 PM
Hey your out of Austin.... I have some real good books you can use ... 78 and up have the pedestal type rockers and 74 have the positive stop. which you could use the older fulcrum balls and make them adjustable.
Rene
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Hell_Fish
Gearhead Posts: 513
From: Austin, TX.
Registered: May 2002
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posted 12-16-2002 03:00 PM
Steve, wish I could afford a set of aftermarket heads, but I can't. Everything is on a budget. The Mustang, Cuda, Swinger, F-100, Dart GT and down the road a 2nd 56 F-100 (Big block truck) and a 39 Ford 2 dr. coupe street rod. The 351 is getting built up as a back up for the 56 F-100. Just a few projects. Heck, I had to talk my wife out of a 63 Comet 4 door this weekend. It was nice, but I have to much as it is and little experiance.Rene, yup good ole Austin. I live north, but work south. I may have to take you up on your offer. What color is your Mach 1?
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rm302 boss
Moderator Posts: 283
From: Austin Texas
Registered: Dec 2002
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posted 12-16-2002 03:15 PM
My Boss is red and black. I also live north off of 290 East. My # 512-928-9949. give me a call or drop me a line i have a large Ford book collection. I also have a lot of 302 and 351w 351c parts..
Rene------------------
1970 Boss 302
1990 Taurus SHO
1985 Mustang GT 351W
1995 Land rover Disco
1980 Triumph Spitfire (auto-X car)
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68DARKHORSE
Gearhead Posts: 272
From: Austin, Tx
Registered: Aug 2002
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posted 12-16-2002 07:39 PM
Dustin,I have some closed chamber heads also.
Let me know if you want to check them out. Later,
Alton ------------------
Alton 68 GT FASTBACK J code
www.imboc.com/phpBB/Uploads/1020432917.jpg
01 GT BULLITT www.imboc.com/phpBB/Uploads/1020440453.jpg
96 OJ BRONCO
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rm302 boss
Moderator Posts: 283
From: Austin Texas
Registered: Dec 2002
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posted 12-18-2002 10:04 AM
Yeah, what year are those heads????????------------------
1970 Boss 302
1990 Taurus SHO
1985 Mustang GT 351W
1995 Land rover Disco
1980 Triumph Spitfire (auto-X car)
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68DARKHORSE
Gearhead Posts: 272
From: Austin, Tx
Registered: Aug 2002
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posted 12-18-2002 01:09 PM
quote:
Originally posted by rm302 boss:
Yeah, what year are those heads????????
They are 351W D5AE-CA.
If I can make it Sat. night I'll bring them with me.
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sodi
Journeyman Posts: 26
From: Kenosha Wi. USA
Registered: Dec 2002
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posted 01-05-2003 11:10 AM
Hey 68DH Everyone I talked to tells me those heads are junk You know something we don,t ??
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