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Author
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Topic: 351w buildup question
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Brock
Journeyman Posts: 34
From: San Diego, CA
Registered: Jul 2000
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posted 11-19-2001 05:17 PM
   
Hey guys, I am building my first engine, a 351w that will be going into a 69 Mustang. I am looking to get the best performance I can but still keep the car streetable. This car will be driven as a 2nd car, maybe 2-3 times a week. Below is my setup, I'd really appreciate any comments/suggestions on it. Be as picky as you wanna be, I'd rather know now instead of later. What do you estimate for hp numbers?69 351w bored .030
ARP rod and main bolts
Forged pistons
Windsor Sr heads, mildly ported by me following the porting article on fordmuscle.com
Comp Cam hydraulic XE274 230/236 @.050, .519/.523 lift, 110* lobe sep.
Comp 1.6 roller rockers and Comp dual springs
Performer RPM intake
Holley 750 vac. secondaries
9.5:1 compression ratio
1 5/8 full length headers
dual 2.5" exhaust out 3 chamber flowmasters
C4 with TCI shift kit
2400 stall
8" rear with 3.55 gears Thanks for the help,
Brock
[This message has been edited by Brock (edited 11-19-2001).]
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n2oMike
Gearhead Posts: 1363
From: Spencer, WV
Registered: Jan 2001
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posted 11-19-2001 06:28 PM
Looks like a really good engine combo. You did your homework!All I would do is add a little looser converter. Well, call me crazy, but I like Edelbrock carbs for the street. If you stay with the Holley, get the quick change vacuum secondary spring kit, and be CAREFUL with the installation. If you do anything to loose the vacuum's seal, bye bye 4bbl. Good Luck!
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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367 [This message has been edited by n2oMike (edited 11-19-2001).]
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JAAZZY
Gearhead Posts: 745
From: Bay Area, CA
Registered: Apr 2001
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posted 11-19-2001 08:18 PM
The only thing I would change is the carb. I would go with a 750 double pumper instead. I used both and preferred it over the vac sec.
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RonnieT
Gearhead Posts: 469
From: Port Allen, La. 70767
Registered: Jun 99
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posted 11-20-2001 12:05 AM
Brock, Look at your piston selection closely, remember that most of the pistons are for the 9.502 deck block, not the 9.480 69 block. You may have to buy dome pistons and have the domes milled off to get the c/r you want. Remember if you get the block decked it will raise the piston in the bore and increase the compression ratio. If you do your homework up front you will get what you want, if you order pistons listed as 9.5 to 1 in the book you will end up with something higher. Never trust the fellow at the parts counter, he only nows what he reads in the catalog, do the math yourself and make sure you get the proper compression height on your pistons. Been there, done the math afterwards, WAY too much compression for pump gas! I would not use a double pumper with a automatic transmisson on the street, you would need a lot of gear and converter to keep it from bogging when you floor it. Just my opinion. ------------------
Ronnie
69 mach1 351W-4V
70 Torino GT 351C-4v with a "shaker"
Mustangs and More Member #23
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Clark
Gearhead Posts: 561
From: Rowlett,Texas
Registered: Aug 99
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posted 11-20-2001 10:25 AM
Brock,
I am with Ronnie, I also have just rebuilt my 69 351W to a 393 and in 69 compression was 10.5 to 1 stock. And the stock pistons were not flat tops they had a small dish to them as well as valve reliefs. ------------------
69 351W Sportsroof Deluxe
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Brock
Journeyman Posts: 34
From: San Diego, CA
Registered: Jul 2000
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posted 11-20-2001 11:12 AM
Thanks for the replys guys. My 9.5:1 is a true calculated 9.5, not what the piston mftr advertises. From the opinions so far, I guess this combo is pretty much what I'm gonna go with. My main concern was that it would be to much of a cam for a street car.n2oMike, your suggestion on getting a little looser converter was echoed on fordmuscle.com when I asked about the combo. I'm now gonna try and find one in about the 2800 stall range. Is this about what you'd recommend? Thanks again guys,
Brock
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JAAZZY
Gearhead Posts: 745
From: Bay Area, CA
Registered: Apr 2001
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posted 11-20-2001 02:17 PM
I used a 600 dbl pumper on the street with a C4 and a 2800 stall convertor without any problems. The throttle response was fine.
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kcode
Gearhead Posts: 2456
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 11-20-2001 11:10 PM
Brock,
Are you getting the Windsor Sr. heads bare or assembled? If assembled, you might not need the Comp springs. Just a money saver.Mike
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Brock
Journeyman Posts: 34
From: San Diego, CA
Registered: Jul 2000
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posted 11-21-2001 03:02 PM
kcode, I got them bare. I hadn't decided on a cam yet when I got them and want to make sure I get the right springs for the cam. The the matching springs for my cam are dual springs, I don't know if you can buy the heads assembled with dual springs.Brock
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stang106
Gearhead Posts: 707
From: God's Country!... Port Alberni B.C. Canada
Registered: Jul 2001
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posted 11-22-2001 03:15 AM
I have a set of World heads on order also with duel springs and 7/16 studs. The vender told me that they need the casting seams smoothed out as well as there is usually machine cutting debris so bare is the way to go.
Dave------------------
'70 ragtop Stang
"I live my life 16.090 seconds at a time"
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