5.4 2v vs 4.6 2v

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5.4 2v vs 4.6 2v

Unread postby redtopracer » Fri May 22, 2020 11:21 am

Welllll getting a new engine soon. Sticking with the 2v engines for cost and simplicity and I already have most of the power adding parts.

Read a whole lot on the mustang forums that the 5.4 2v is a waste of time because of the bore to stroke ratio and the issues people have with cylinder fill on NA versions

But since it was a mustang forum ive dumped a whole ton of salt on these opinions lol.

Anyway my thoughts were to run some intake adapter plates and throw my Ford Racing SVO intake manifold and hammered on long tubes on a stock PI 5.4 .

Obviously this engine would produce a TON more tq than a 4.6 variant with the same kit. But what would the hp look like? Would this thing fall flat at 4k?

Ultimately I would plan on throwing the lighting supercharger bits on it. Which is the other reason im looking at a 5.4 2v.
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Re: 5.4 2v vs 4.6 2v

Unread postby decipha » Fri May 22, 2020 3:41 pm

I would take the 5.4 over the 4.6 any day of the week.

If your doing the swap you might as well toss on some trickflow (non R) heads to make it worthwhile. Thats an easy bolt on +150rwhp.

The stock heads are the restriction. It will make the same power on a 5.4 as a 4.6 but the 5.4 gives you more torque.

You want 11:1 compression n/a and 10:1 if going boosted.
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