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07-27-2009, 04:01 PM
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CC Member
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Join Date: Feb 2006
Cobra Make, Engine:
Posts: 2,750
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Not Ranked
What makes up a 347?
Can someone tell me what makes up a 347?
Windor or Clevland
Stroked 302 or destroked 351
Cleavo heads on windsor block....
I know nothing......
Please explain to the layman....... 
SpookyPT |
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07-27-2009, 04:14 PM
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CC Member
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Join Date: May 2002
Location: Brisbane Australia,
QLD
Cobra Make, Engine: RMC under re-construction, GenIV with tremec 600, Jag 3.31 L/S diff
Posts: 3,318
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Not Ranked
Here ya go Spooky.
http://www.fordmuscle.com/archives/2002/04/331/
Both nice engines. I personally prefer a 331.
__________________
It's impossible to soar like an eagle when you're surrounded by turkeys.
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07-27-2009, 05:19 PM
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Senior Club Cobra Member
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Join Date: Feb 2006
Location: Melbourne,
VIC
Cobra Make, Engine: RMC, carb 347 TopLoader and Jag running gear ~ so old school I time it with an hour-glass :D
Posts: 1,293
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Not Ranked
If you aren't a subscriber to Fordmuscle you'll only get the first page (or that's what happened to me anyway)
the 347 (5.7l) is usually a 302 windsor with a .030 overbore and a 3.4in stroke
the 250kw windsors that ford had in the AUs were 342s i.e. std bore with the same stroke crank.
the 331 (5.4l) is usually a 302 windsor with a .030 overbore and 3.25in stroke (without the overbore it is a 327)
However - the 'new' boss 302 block can go to 347 with a 3.25in stroke by being able to be bored .125 over (from memory)
I have read that the cylinder sleves in the boss 302* are not long enough to accomodate the 3.4in stroke and that this is also the case with some early 289s (have no experience of this)
Boss302 was a special racing block that had 'tunnel port' heads/4 bolt mains etc
the new Boss302 block is basically set up to build a Clevor (Cleveland heads/Windsor block)
Hope this helps
LoBelly
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07-27-2009, 06:12 PM
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CC Member
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Join Date: May 2008
Location: San Jose CA,
CA
Cobra Make, Engine: SPF_R_/BRG/FRBoss302/327CI/FordEFI/Under_Car_Exh/
Posts: 2,523
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Not Ranked
Careful on the selection of 347 pistons , - sometimes depending on rod selection , the oil ring will intersect with the piston pin hole, and the motor will consume more oil than really needed. my personal preference is for a 326-331. Stock 4.00" bore to 4.030" and a 3.2" stroke. -- plenty of juice.
if you are more of a juice monkey, then you probably should be in a 351W Block -where you can go 402-408 with no big problems.
Steve.
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Steve SPF 2734 MK3 / Brock Coupe #54- panavia.com
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07-27-2009, 06:21 PM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
Les has convinced me on the 331 as it seems to be more 'square' (?) and thus a smoother, more revvy motor (all other things being considered of course).
Merv
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Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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07-27-2009, 07:21 PM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
Quote:
Originally Posted by spookypt
Can someone tell me what makes up a 347?
Please explain to the layman.......
SpookyPT |
Alot of very heavy cast iron 
__________________
Cruising in 5th
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Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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07-27-2009, 08:53 PM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
Please! Authentic cast iron!
Merv
__________________
Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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07-27-2009, 11:29 PM
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CC Member
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Join Date: Feb 2002
Location: Alice Springs, central Australia,
NT
Cobra Make, Engine: Classic revival kit (CR3181), gen III engine, T56 6 speed box, AU XR8 lsd diff
Posts: 5,699
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Not Ranked
Quote:
Originally Posted by Merv and Sharon
Please! Authentic cast iron!
Merv |
I forgot it is real cast iron, and blue paint
__________________
Cruising in 5th
---------------------------------------------
Never be afraid to do something new, Remember, Amateurs built the Ark: Professionals built the Titanic.
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07-28-2009, 12:16 AM
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CC Member
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Join Date: Jun 2007
Location: Sunshine Coast Qld,
QLD
Cobra Make, Engine: Harrison # 80; Ford 5.0L HO Trickflow heads, cam and rockers and MassFlow EFI
Posts: 3,482
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Not Ranked
We Ford builders have an eye on the future when these blocks in Cobras will have collectors value!
Merv
__________________
Merv
Ford Cobra
Harrison #80.
Peregian Beach
Sunshine Coast Qld.
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07-28-2009, 12:38 AM
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CC Member
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Join Date: Jul 2004
Cobra Make, Engine: 347 Stroker Morrison Injection. Registered.
Posts: 1,440
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Not Ranked
You tell them Merv, we're not scared of their Coke Can wannabee's.
Regards.
__________________
Mando
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07-28-2009, 06:26 AM
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CC Member
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Join Date: Nov 1999
Location: Brisbane, Australia,
Q
Cobra Make, Engine: Contemporary CCX3117 427FE
Posts: 4,381
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Not Ranked
Nice one Steve. You just saved me from having to type my reply, as I was going to say exactly what you did.
Go for a bit more deck height, and you will be rewarded with greater performance and strength in a 351W based combo.
Quote:
Originally Posted by PANAVIA
Careful on the selection of 347 pistons , - sometimes depending on rod selection , the oil ring will intersect with the piston pin hole, and the motor will consume more oil than really needed. my personal preference is for a 326-331. Stock 4.00" bore to 4.030" and a 3.2" stroke. -- plenty of juice.
if you are more of a juice monkey, then you probably should be in a 351W Block -where you can go 402-408 with no big problems.
Steve. |
__________________
Craig
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