Anyone Using Holley Tunnel Ram Carbs on Their Chevy?

Chevrolet Technology and Innovations
1

I’ve been diving into performance upgrades for my Chevrolet and keep hearing about Holley tunnel ram carburetors. I’ve got a 350 small block, and I’m curious about how much of a difference these carburetors can make.

Here are a few questions I have:

  • What type of performance gains can I realistically expect from a tunnel ram setup? I know airflow is a big deal, but will I see significant improvements in power and throttle response?
  • Installation advice: How does the installation process compare to standard carburetors? Are there any tricks or tips that might help with the installation?
  • Compatibility: If I decide to go this route, what other modifications should I consider? Will I need to change my fuel system, or is the stock setup adequate?
  • Real-world experiences: For those who have made the switch, how has it impacted your driving experience? Any noticeable differences in everyday driving versus just at the track?

I’d love to hear from anyone who’s had experience with Holley tunnel ram carbs, especially in the context of Chevy engines. Any insights, tips, or products you recommend would be really helpful. Thanks in advance!

2

I’ve been using Holley Tunnel Ram carbs on my Chevy for a few months now. Tuning can be tricky, but focusing on the right jetting is crucial. I’ve had good results with 68 jets for my setup.

3

That sounds interesting! Do you have any tips on achieving the right air-fuel mixture? I’ve been struggling to get mine dialed in.

4

One method I found effective is adjusting the idle mixture screws carefully. A slight turn can make a huge difference in performance. Make sure to check it when the engine is fully warmed up!

5

You should also consider upgrading to a larger throttle body if you’re going for serious horsepower! It can help with airflow at mid and high RPMs.

6

I personally like using 70 jets with a power valve to maintain a rich mixture under heavy acceleration. It works wonders for keeping the engine from leaning out.

7

Good tip! How do you measure the effectiveness of your air-fuel mixture adjustments?

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8

Using an A/F ratio gauge has helped me tremendously. It gives you real-time feedback on your adjustments, so you can fine-tune it for best performance.

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9

I’ve read that some people have had success with modifying the accelerator pump to enhance throttle response. Has anyone done this?

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10

I’ve tried it! It really helps with the initial off-the-line power. Just make sure to test carefully to avoid too much fuel.

11

I’m amazed at how much tuning impacts performance. Did anyone ever do a dyno test before and after tuning? I’d love to see some numbers!

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I did a dyno test just after I tuned mine! I gained about 25 horsepower. Just goes to show how critical these adjustments can be.

13

That’s impressive! Does anyone have tips for tuning on a tight budget? I can’t always afford the high-end parts.

14

You can find a lot of good used parts online. Sometimes, even tuning components can be bought refurbished; just be sure to check the condition first.

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That might be worth checking out! Any specific websites or forums you recommend?

16

I’ve been using Holley Tunnel Ram carbs on my 350 Chevy for about a year. The installation was straightforward, but getting the linkage right was a bit tricky. Remember to double-check your throttle cable length!

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I completely agree! I had to use a custom linkage because the stock setup just wouldn’t fit. Also, don’t forget to adjust the float levels; that’s crucial!

18

I’ve had some experience with Holley carbs on various Chevys. One challenge was the alignment with the manifold; it can be a tight fit. What engine are you using?

19

I have a 383 Stroker. The fit on my manifold has been a bit of a challenge as well. Any tips on what adapters might work?

20

Make sure to get a good quality intake adapter. I’ve had success with the Edelbrock ones, they really help improve the fit!