|
|
Re: Holley 850 DP or 750 vac sec for...........
[Re: gch]
#958116
03/24/11 11:10 PM
03/24/11 11:10 PM
|
Joined: May 2003
Posts: 363
Castle Rock, CO
pwr440
OP
enthusiast
|
OP
enthusiast
Joined: May 2003
Posts: 363
Castle Rock, CO
|
Thanks. I was thinking about a new 800 THUNDER AVS but I saw these carbs on craig's list for cheaper so I was  Thanks. britt
|
|
|
Re: Holley 850 DP or 750 vac sec for...........
[Re: BSB67]
#958117
03/24/11 11:22 PM
03/24/11 11:22 PM
|
Joined: Mar 2005
Posts: 3,138
Central NC
gch
master
|
master
Joined: Mar 2005
Posts: 3,138
Central NC
|
Quote:
I vote for the 850 dp. I had an 800 DP on a 440 with a 222 @.050 cam 3.23 stock converter, and at over 4200 lbs. It ran better than with my 3310 or 750 AFB.
With the 3.91's and converter I was thinking it could use 800cfm with the smaller diameter throttle bores(same as 750/less than 850)and still have decent part throttle response.
I will agree it is hard to beat a well tuned 750 vac sec on many applications(my 496 barge included).
|
|
|
Re: Holley 850 DP or 750 vac sec for...........
[Re: gch]
#958118
03/25/11 12:00 AM
03/25/11 12:00 AM
|
Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
|
master
Joined: Nov 2003
Posts: 6,293
Rock Springs
|
I have run them all, and a variety of engines and my similar engine 10:1 446 with street gears, and a good driver will be getting a 750 3310 vacuum carb.
small hyd cam, well ported 452 heads with 2.14/1.81 valves engine ran low 7's in the 8th mile with a solid cam and more gear and converter.
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
|
|
|
|
|
|
|
I think a 750 will be more streetable and tunable, not to mention better gas mileage! It's usually better to lean on the conservative side.
