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05-19-2004, 07:38 AM
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#1 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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carb size
Do you think a holley 600 cfm is big enough for a stock 350 with headers and intake?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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05-19-2004, 10:05 AM
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#2 | |
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Registered User
Join Date: Feb 2004
Location: Atlantic Highlands, N.J.
Posts: 139
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Quote:
It is not so much the Holley size, meaning a 600 or 650, but how it is set up. You can make a 600 out perform a 650 or 750 that is not set up correctly for a specific engine combination.
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86 GMC SWB, DK. BLUE, ZZ430,TH400, 4.11'S, HEADMAN CERAMIC HEADERS, WELD BILLETS, BFG 275 / 60 / 15, 325 / 50 / 15 DRAG RADIALS, FIBERGLASS COWL HOOD, B&M SHIFTER. MSD, MARCH PULLEYS / ALT. / PWR. STEER PUMP, BECOOL RAD., BILLET GRILL & GRANT WHEEL. |
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05-19-2004, 10:51 AM
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#3 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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I have pn 0-80457 it say this is a universal for all v-8s 1965-69. I dont want to rejet and such as it is my 4x4 daily driver no racing but still want to max. my power. Should I look into getting a new carb or working with this one?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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05-19-2004, 10:54 AM
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#4 |
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Active Member
Join Date: Nov 2003
Location: Jacksonville, FL
Posts: 307
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That's the same carb I'm running right now on my Blazer. It works fine for me as a daily driver and still has enough to make the drive fun.
I'm running it on a 355 with vortec heads, Air-gap intake, headers and Comp 262 cam. If I were to change carbs right now it would probably be to the Road Demon Jr. 725. |
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05-19-2004, 11:08 AM
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#5 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Why a road deamon jr and not the road deamon?
Also where on the carb can I confirm the part number?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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05-19-2004, 11:16 AM
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#6 |
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Active Member
Join Date: Nov 2003
Location: Jacksonville, FL
Posts: 307
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mainly price....I can get a 725 Jr. for around $275 with vac secondaries and elec choke
The same thing in a Demon 750 would run close to $400 It's my daily so I want to keep it somewhat practical....  
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05-19-2004, 11:34 AM
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#7 |
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Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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I understand I was thinking about a road demon but think it my be more than I need. But the jr is nice do those deamons use springs also for the secondaries? And do you know how the accelerator pump works?
Also what do you think the differences are between the jr and the road deamon. As far as performance?
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO Last edited by 76bonanza; 05-19-2004 at 11:36 AM. |
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