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Re: Holley 780 for a 440?
[Re: Lefty]
#595757
01/29/10 07:10 PM
01/29/10 07:10 PM
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Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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Install the anti backfire conversion kit in it if it doesn't have it added. I remember a friend that ran a 780 on a 289. Good MPG until he swapped the 271HP cam for a General Kinetics .5++ lift cam, and modded it to be straight 4bbl manual. 
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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Re: Holley 780 for a 440?
[Re: Rug_Trucker]
#595758
01/31/10 01:25 AM
01/31/10 01:25 AM
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Joined: Jan 2004
Posts: 910
Southern Oregon
toyotajeep
OP
super stock
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OP
super stock
Joined: Jan 2004
Posts: 910
Southern Oregon
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It turned out to be a 3310-2 so it isn't a 780. I did find about 3 books in my library that are fairly recent. Two were Holley only so I will be looking into it.
My whole fuel system is kinda messed up and I will likely be working on that too.
I'd like to get this on the road and running decently so motivation is high......
ROB
1989 Dodge Cummins & 1989 Dodge W-250
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Re: Holley 780 for a 440?
[Re: B5 Bee]
#595761
01/31/10 03:44 AM
01/31/10 03:44 AM
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Joined: Jan 2003
Posts: 931
dulcich
super stock
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super stock
Joined: Jan 2003
Posts: 931
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Quote:
It doesn't matter if it's a 780cfm/#3310 or 750cfm/#3310-2, it will flow the same.
Both have the same throttle and venturi sizes, which are also shared with the 800cfm/#4780.
I used a #3310-2 on an iron head 440 Duster I had in the '90s, ran a best of 10.30 shifting at 6000rpm.
Yeah, but the 780 has the better downleg boosters vs the straight boosters in the later 750 3310's. I always figured this is where the 30 cfm went.
-dulcich
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, inquiring minds want to know