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Author
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Topic: How much hp?
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-02-2003 05:58 PM
   
351W
stock rotating assembly
670 Cfm Holley Street Avenger
1" 4 hole carb spacer
World Rouch 200 cylinder heads
Performer intake
270H cam
1.7 roller rockers
Hedman Tork step headers (1 1/2�� primaries to 1 5/8��, with a 3�� collector)
[This message has been edited by Dubz (edited 03-02-2003).]
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Fastymz
Moderator Posts: 9095
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 03-02-2003 06:02 PM
I'd say about 350hp.
A different intake would allow it breath better.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 2.26 60'S
14.9 @ 90.86MPH 65 coupe,351w,C4,Big Boss 429 hood scoop,8"3.40 TracLoc,Cragar SS,Black Suede. https://mustangsandmore.com/ubb/Fastymz.html
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-02-2003 06:07 PM
i got ripped on this intake ($350CDN) and e-bay ones are going for $70 US so since i havn't used mine at all i think it would be a waste.
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james306
Journeyman Posts: 41
From: falmouth,me,usa
Registered: Feb 2003
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posted 03-02-2003 06:14 PM
ok you said "stock rotating assembly" so what compression are you making? the roush 200s have 64 cc chambers and depending on which year assembly you have, you might end up with a poor comp ratio. those roush 200s are said to be a pretty good head flowing its max in the 230 cfm range. performer rpm intake is definately a better choice with them heads, that performer is gonna give up at 5500.
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-02-2003 06:18 PM
Stock heads on a 74 351W were i belive 72cc?? so the comp would be nice and high....doesnt't the comp also depend on the cam?
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james306
Journeyman Posts: 41
From: falmouth,me,usa
Registered: Feb 2003
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posted 03-02-2003 06:51 PM
74 would have i believe the D0OE castings which were 60.5 cc. correct me if im wrong anyone. your cam will not affect your compression ratio but your compression will have an effect on your cam. has the short block (bottom end) been rebuilt? if so give us your part number and brand of the pistons used if you know them. what is your deck height. if you could give me these numbers i can give you a close estimate of what your compression will be.
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-02-2003 08:33 PM
if the stock heads were 60.5 cc then i'll have about 8:1 compressionhowever i was under the impression that the stock heads would either be 58.3cc (CR 9.4) or 72.9cc (CR 9.28) and i had been told that it was the latter of the two. nothing has been touched on the engine yet, 62,000 miles all that has been done is minor tune ups since the purchase of the vehicle in 74 i have a parts room that is filling waiting for summer
[This message has been edited by Dubz (edited 03-03-2003).]
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-03-2003 08:54 PM
does anyone know which heads would be on a 1974 351W???
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Buster
Gearhead Posts: 513
From: Orlando
Registered: May 2002
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posted 03-03-2003 11:24 PM
IMO, I would say 597 hp at 7230 rpm.
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-04-2003 02:45 AM
damn!! Just Short of my 600hp at 7300 rpm....
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-04-2003 03:07 AM
Just was reading on another site.....according to the site my engine as produced by ford has 8.2:1 compression with 60.4 cc heads!!!!
OWCH, saving for new pistons i guess
[This message has been edited by Dubz (edited 03-05-2003).]
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lawless
Gearhead Posts: 236
From: Richmond, VA
Registered: Aug 2000
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posted 03-04-2003 03:19 AM
Captain Clamhead....... we need yer help!!!
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Trailer_Trash
Gearhead Posts: 428
From: Alpharetta, Ga, US
Registered: Jan 2003
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posted 03-04-2003 04:36 PM
no we dont. 
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Dubz
Gearhead Posts: 243
From: Manitoba Canada
Registered: Oct 2002
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posted 03-05-2003 06:31 PM
does anyone know for sure what the possible combustion chamber cc was for the heads produced for 74 351W....PLEASE!!!!!
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SteveLaRiviere
Administrator Posts: 31026
From: Saco, Maine
Registered: May 99
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posted 03-05-2003 07:13 PM
Your '74 should have D0OE-C, D0OE-G, or D0OZ-C heads which all have 60.4 cc chambers.------------------
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