Question about 540 CI Dart Motor

[Vegas69]

You will need a minimum of a 150 gph pump with less than 7 lbs of pressure.

I'd start with a 10w30 and look at your oil pressure, hot at idle. If it's below 15-20, bump it up to a 10w40 or 15w50. Us a detergent oil as mentioned.

Redline is likely around 6200 with a hydraulic cam, 6500 with a mechanical.

Unless things have changed, Edelbrock's biggest carb is 750 cfm. That's to small for a 540. I agree that people think they look cool but you will need to go to a holley if you want to swap to one carb. I'd take a good look at the plugs if you think it's not running correctly.

Call the car what you want.

[Xpock182]

Originally Posted by Vegas69

You will need a minimum of a 150 gph pump with less than 7 lbs of pressure.

I'd start with a 10w30 and look at your oil pressure, hot at idle. If it's below 15-20, bump it up to a 10w40 or 15w50. Us a detergent oil as mentioned.

Redline is likely around 6200 with a hydraulic cam, 6500 with a mechanical.

Unless things have changed, Edelbrock's biggest carb is 750 cfm. That's to small for a 540. I agree that people think they look cool but you will need to go to a holley if you want to swap to one carb. I'd take a good look at the plugs if you think it's not running correctly.

Call the car what you want.

This is what I needed!! Thank you!

[Ketzer]

Welcome to the forum.
This place is pretty LS heavy but there are a few of us that still love a healthy big block. You'd also be pretty surprised at what else some have in their garages besides a musclecar! Real car guys like all cars.


Jeff-

[Xpock182]

Originally Posted by Ketzer

Welcome to the forum.
This place is pretty LS heavy but there are a few of us that still love a healthy big block. You'd also be pretty surprised at what else some have in their garages besides a musclecar! Real car guys like all cars.


Jeff-

Thank you for the kind welcome!


I have reviewed many forums and this one appears to have the most active & available information along with a large member base. Not to mention some awesome rides! Hopefully my big block fits in well here despite all the epic LS motors

[Neil B]

Is that a street car with a 540 big block, a 3.5" exhaust and NO mufflers? Holy crap, what does it sound like?

[Flash68]

Originally Posted by Neil B

Is that a 540 big block with a 3.5" exhaust and NO mufflers? Holy crap, what does it sound like?

Good catch..

now we really need some video or sound clip!

[Xpock182]

Originally Posted by Neil B

Is that a street car with a 540 big block, a 3.5" exhaust and NO mufflers? Holy crap, what does it sound like?

I will be sure to take some videos as soon as I get the last few things patched up on the car. It does have mufflers however but it is 3.5'' exhaust

[Xpock182]

Originally Posted by Vegas69

You will need a minimum of a 150 gph pump with less than 7 lbs of pressure.

I'd start with a 10w30 and look at your oil pressure, hot at idle. If it's below 15-20, bump it up to a 10w40 or 15w50. Us a detergent oil as mentioned.

Redline is likely around 6200 with a hydraulic cam, 6500 with a mechanical.

Unless things have changed, Edelbrock's biggest carb is 750 cfm. That's to small for a 540. I agree that people think they look cool but you will need to go to a holley if you want to swap to one carb. I'd take a good look at the plugs if you think it's not running correctly.

Call the car what you want.

Would this work as a solution? Also would I need a regulator since it is set at 7.5 lbs of pressure and not 7?

https://www.holley.com/products/fuel...arts/12-454-25

[Vegas69]

Holley seems to think that it doesn't. I would put a NON LIQUID filled gauge on it to ensure you aren't getting to much pressure. Also, your supply line to the pump needs to be sufficient.

[uxojerry]

Dart 325 heads would be a normal selection for a 540. With Lemon's headers and a 3.5 inch exhaust, Im thinking your 540 is something more, maybe Dart 345s. A run of the mill 540 is 650hp. A trick 540 is 850hp or so.

There aren't many BBC fans here. Remember you'll make more hp with a plug wire off, than most with a perfect tune, lol.