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351C and a C4auto probs......... 

 

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 Post subject: 351C and a C4auto probs.........
Posted: Sat Dec 19, 2009 5:13 pm 
Smokin em up
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Age: 29

Posts: 218

Joined: 22nd Apr 2007

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Ride: EF, Magna, R33 skyline

Hi guys I have a new Vavle body for the C4 and it has a green spring.... can any one tell me if it is stage 1,2 or 3???? and I cant get the VAC secondaries to work on my 750 Holley :x ............ any thoughts???? I would like a 650 DP for it if any one has one... :roll:
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 Post subject: Re: 351C and a C4auto probs.........
Posted: Tue Dec 22, 2009 10:18 pm 
Getting Side Ways
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Joined: 11th Nov 2004

How are you test the vac secondary on the carby?

It will not open while free reving the engine.

 

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 Post subject: Re: 351C and a C4auto probs.........
Posted: Fri Dec 25, 2009 9:47 am 
Smokin em up
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Age: 29

Posts: 218

Joined: 22nd Apr 2007

Gallery: 21 images

Ride: EF, Magna, R33 skyline

yeah they work but only at 5000rpm
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 Post subject: Re: 351C and a C4auto probs.........
Posted: Mon Dec 28, 2009 11:51 am 
Parts Gopher
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Age: 39

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Joined: 27th Sep 2009

Ride: eb xr8 falcon/1966 xr fairmont

Location: Elizabeth Grove
SA, Australia

hey mate on the holleys they have the vaccum secondries and they have different spring tentions, which you can get from holley, i had the same problems with mine on my commodore, i put a lighter spring, white i think and the secondries came on at about 2000 rpm, holleys take alot to set up but the are a simple carby, are your floats set right. Also the thermo quad is quite a tricky carby to rebuild but when they are set right they will throw you in the back seat. Try differents tentions on your springs
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