What carb?
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- David Murray
- Posts: 92
- Joined: Fri Dec 11, 15 7:33 pm
What carb?
Currently looking at carb options for my 512 stroker build (10:1 CR, Crower Street Roller Cam), which will be completed and fitted into my Polara over the next few weeks. I don't want to re-use the Quick Fuel 735 Vac Sec that is on the current 440 and don't particularly want another QF carb, though do want to stick with Holley or Holley derivatives. Time for a double pumper perhaps....950 CFM maybe, or is that too big....850 better?
This will remain primarily a street car (A727 with 3.23 gears...but may go up to 3.55's), though I will want to run it down the track every now and again. Any comments/suggestions appreciated.
This will remain primarily a street car (A727 with 3.23 gears...but may go up to 3.55's), though I will want to run it down the track every now and again. Any comments/suggestions appreciated.
66 Dodge Polara.
- David Murray
- Posts: 92
- Joined: Fri Dec 11, 15 7:33 pm
- David Murray
- Posts: 92
- Joined: Fri Dec 11, 15 7:33 pm
- David Murray
- Posts: 92
- Joined: Fri Dec 11, 15 7:33 pm
- David Murray
- Posts: 92
- Joined: Fri Dec 11, 15 7:33 pm
Interesting point...I've seen a LOT of debate on the kind of setup I'll have, with carb recommendations ranging from 650 CFM vac sec to 1050 dominators.
I've never been entirely happy with the QF carb....hours of tuning with jets, IAB's, IFR's and power valves, but still a big lean spot at part throttle. So, I'll definitely start with the 950 double pumper and see how it goes. Actually, I probably will dyno it so maybe I will stick the 735 vac sec back on then and compare.
I've never been entirely happy with the QF carb....hours of tuning with jets, IAB's, IFR's and power valves, but still a big lean spot at part throttle. So, I'll definitely start with the 950 double pumper and see how it goes. Actually, I probably will dyno it so maybe I will stick the 735 vac sec back on then and compare.
66 Dodge Polara.
A HP 950 has a 750 base but they have very good shift recovery, i took an 850 DP off my challenger and fitted my HP950 off my Dart and it picked up .15TW71 wrote:I have a 950 HP Holley on my 512, although I believe its UNDER 850 cfm, the heads are max wedge port size, it needs much more cfm, I have a 1150 4500 but will use the smaller carb for now but it needs at least 1150 imo.
who wants fuel economy!
"Socialism is the philosophy of failure, the creed of ignorance and the gospel of envy."
Winston Churchill
Winston Churchill
A HP 950 has a 750 base but they have very good shift recovery, i took an 850 DP off my challenger and fitted my HP950 off my Dart and it picked up .15TW71 wrote:I have a 950 HP Holley on my 512, although I believe its UNDER 850 cfm, the heads are max wedge port size, it needs much more cfm, I have a 1150 4500 but will use the smaller carb for now but it needs at least 1150 imo.
who wants fuel economy!
"Socialism is the philosophy of failure, the creed of ignorance and the gospel of envy."
Winston Churchill
Winston Churchill