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| xf_man |
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Age: 46 Posts: 624 Joined: 21st Mar 2005 Ride: Triton ute BA Futura Location: Woori Yallock |
Howdy
Just wondering what kind of carby you guys and gals run on your 351c? I have to get my thermoquad rebuilt and am thinking another carby |
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| Interceptor |
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get the thermoquad rebuilt
_________________ Banned |
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| smoke_ |
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yeah i've heard quite good things about the ol' thermoquad's and you can't get defected with a standard carby.
i got a 600 holley, it's too small for my 351, and so is the pump, but it pulls hard 0-130km/h.
_________________ NEW RIDE - FPV FG F6 6spd Auto. 12.26@114MPH, 1.88 60FT on Cheapy Tyres with 38PSI - Stock except K&N filter! |
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| MikGan |
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yeah everyone thinks the thermoquads are good, but u really have to look hard to find someone who can set them up just right these days. I run a Holley 770 Street Avenger, also probably just a little small but does the trick.
_________________ I couldnt fix your brakes so I made your horn louder
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| smoke_ |
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what sort of power are you making mikgan?
_________________ NEW RIDE - FPV FG F6 6spd Auto. 12.26@114MPH, 1.88 60FT on Cheapy Tyres with 38PSI - Stock except K&N filter! |
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| MikGan |
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got some gremlins, but 190ish rwkw last time, but some major gremlins, expect 220+rwkw. still using a single 2" exhaust! ewww!
_________________ I couldnt fix your brakes so I made your horn louder
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| xf_man |
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Age: 46 Posts: 624 Joined: 21st Mar 2005 Ride: Triton ute BA Futura Location: Woori Yallock |
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be pretty good, tho IMO for street use a 650 is all you'll need
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| GTBob |
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Standard 351c ran autolite or 780 holley (GT etc)
351W gtho standard ran 600cfm holley mine runs tricked up 780 cfm or 725 double pumper. 
My XC 302 runs a 351 carter thermoquad Tricked up. 
_________________ Rotten Old Revhead!!! XW GTHO + EF ex cop car (exractors 2.5 cat back zorst !6" Simmons K&N +airbox mods Lowered with Bilstein shocks+Whiteline Bars NEXT THING Swap HO for GTP or Ferrari! |
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| GTFORDMAN |
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Age: 44 Posts: 1475 Joined: 5th Nov 2004 Ride: 98 EL Falcon - Last of the EL's Location: Muswellbrook |
i have a 302 clevo, and feeding the fuel is a 500 2barrel Holly, seems to do its job quite well
_________________ why are women like clouds? eventually they f**k off and its a really nice day.
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| raiki |
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I have a 650 spreadbore holley on a 351C and a 450 Squarebore on a 302C. I don't have power figures on either of them.
Working on 85% VE (a respectable street 351) @ 6000rpm, it's only 520cfm. 100% VE @ 8000rpm = 813cfm Using these values my 302 is carbied just right, the 351 is oversize. Not to worry, EFI is getting closer each day.
_________________ Adrian
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| Samsy |
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Are the thermoquads squarebore or spreadbore?
_________________ XB 351 and BA GT |
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spreadbore
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| Bert |
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The VE calculators are not the best guideline because carby flow rating are calculated at a vaccum depression. 1.5hg for 4 barrels, and 3hg for 2 barrels. Flowbenches require a restriction to measure flow.
Anything over 1hg of manifold vaccum at WOT is starting to become a restriction. Thermoquads are good carbies but are limited on parts and tuning know how. If setup correctly a thermoquad makes an excellent carby. You can't go wrong with a Holley 3310 750 vac sec, very tuneable carby. |
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| 66 coupe |
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im running an 830 annular discharge, the thermoquads, or the quadrajets can go really well, but you need to find someone who knows what they are doing with them.
If your going to go with an aftermarket carb, id suggest go for a double pumper over a vac secondary. It gives you more room to improve the combo down the track, however you will need to revise your driving style to suit. |
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12.06@120MPH
