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540 Efi motor

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Old 09-20-2006, 04:34 PM
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Default 540 Efi motor

Can you make 700 foot pounds of torque on a 540 with 502mag fuel injection and stock heads.
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Old 09-20-2006, 04:44 PM
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Default Re: 540 Efi motor

Not without a supercharger.
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Old 09-20-2006, 05:26 PM
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Default Re: 540 Efi motor

Or without nitrous....

Or without a ton of compression......

If this is a trick question and you've already done it please show us proof and tell us how you did it.
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Old 09-20-2006, 07:05 PM
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Default Re: 540 Efi motor

Well that really stinks!! I was possibly looking at gong the Natural Aspirated route.

So what kind of torque can you make with 10 to 1???
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Old 09-20-2006, 07:07 PM
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Default Re: 540 Efi motor

I'm getting ready to tear down a pair of 500EFI's using the stock Injection system (bigger injectors), aluminum heads, AND punching it out to 540's........I won't hit 700HP or TQ. (but hopefully close!!!!!!)
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Old 09-20-2006, 07:16 PM
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Default Re: 540 Efi motor

My carb 540 made 678 TQ and 667 HP
9 to 1 and a hyd cam with AFR heads
I'm sure there are guy's getting that 700 TQ with a little more compression and cam .
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Old 09-20-2006, 07:37 PM
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Default Re: 540 Efi motor

Quote:
Originally Posted by 800XCR
Not without a supercharger.

What is the limit as far as horsepower and RPM with the mag EFI system? When do you sell it and go carb?
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Old 09-20-2006, 08:45 PM
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Default Re: 540 Efi motor

talon 25 what AFR heads are you using?

Last edited by baja27; 09-20-2006 at 09:35 PM.
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