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Edelbrock VRS-4150 Carburetor, 750 cfm, 4-Barrel, Mechanical Secondaries [Bead Blast Finish]

350-1307

made in usa

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VRS-4150 Carburetor, 750 cfm, 4-Barrel, Mechanical Secondaries [Bead Blast Finish]
$875.95
2 left in stock
VRS-4150 Carburetor
  • 750 cfm
  • 4-Barrel
  • Mechanical Secondaries
  • 4150/4500 Flange
  • Aluminum
  • Bead Blast Finish
  • Free Shipping - Ships
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    1307 - Edlebrock VRS-4150 Series Race and Performance Carburetors is rated 1.0 out of 5 by 1.
    Rated 1 out of 5 by from Nicely executed, no support, possibly design flaw. This is a very nice looking carb, fully adjustable, except for maybe some engine sizes (spec). Also, Edelbrock has zero support, I called them 3 times in 2-weeks and received no call back. I ran this carb on a fresh Ford FE big-block (445ci), moderate build - Edelbrock Performer RPM intake, Edelbrock 60065 heads, and Comp Cams Hyd Roller (230/[email protected], .530 lift), pulling 12in vacuum at 800rpm (4-speed car). I'm familiar with how 4150's are tuned, including air jets, emulsion jets, etc. I could not get this carb to run at cruise above 11.5AFR, I was targeting 13.0AFR cruise (1800-2700rpm). With this engine spec I don't see that it's possible, so maybe this carb would work with a built small block, but a big block with high initial booster pulse I don't see it working, even with all the adjustments that are possible. I was told it's because the Throttle Bore (1.68") and small Venturi (1.25)" size causes too strong a pulse on a bigger motor with lots of vacuum, I don't know how true that is, but it makes sense, so be careful. Again, with zero support from Edelbrock, it's a hard sell. I tried approximately 25 different combinations with the emulsion jet stacks, air jets, and of coarse - main jets. Returning carb. 2-weeks of tuning time - lost.
    Date published: 2023-01-16
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