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Carb selection for 351C.

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Old Jul 27, 2025 | 06:57 AM
  #16  
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Originally Posted by Destroked 450
It’s probably your cam that’s limiting the peak rpm power
Could be. But any IR induction setup tends to be quite restrictive. It did make very good torque numbers so it is a compromise.
 
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Old Jul 27, 2025 | 10:36 AM
  #17  
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From: Harned, Ky
Your R84013-3 Holley is indeed a 750 double pumper, -3 means it’s the 3rd revision of the original design. 4010 series was Holleys version of the original Autolite 4100 4bbl carb, with only one top gasket they were less prone the leakage around the fuel bowl and metering block like the 4150/4160 design. I never opened mine up to see how tuneable it was compared to the 4150/4160 series
My 600 was a R84010 model that I purchased new in the mid 80’s to go on my 77 F-150 4x4 with 400 engine, I’m thinking around 86, I don’t know exactly when the 4010 was introduced but I’m pretty sure it was introduced in the 80’s as mine was the only one being used in my area at that time.

Edit: Just did some research and found the 4010/4011 series was introduced in 86 so it was a new design when I purchased mine, unfortunately it didn't sell well and was dropped from production in the 90’s
 
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Old Jul 27, 2025 | 04:51 PM
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Used to tune those 69-74 ,75, 76 Lincolns with 460's to get 17 mpg by lowering the float levels and setting the timing and CO for our altitude
 
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Old Aug 1, 2025 | 12:02 PM
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Originally Posted by Destroked 450
351C ...... the 3310 to be 780 cfm while 3310-2 and later models are 750 cfm
......
Yep, with vacuum secondaries. As I recall, my 3310 had secondary jets in a "block" where the 3310-2 used a plate maybe? It was the early 1970s. Great carbs, my first was on a 340 4 spd Swinger, it run about perfect. Such a carb would be well at home on a 351C but it will live just fine under a Holley 600 #1850 vacuum sec carb too. I've had double pumpers but never for long, usually was easy to find someone who wanted it more than me.
 
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Old Aug 4, 2025 | 09:05 PM
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From: Harned, Ky
I ran a Holley 750 double pumper on a 71 Torino 351C 4 bbl 4 spd , it ran good and got good fuel mileage as long as the back 2 bbls stayed closed, but they did get exercised on a regular basis 😏
 
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