WebJun 7, 2024 · The non-pi heads rolled out on the 4.6 engine making only 210 horsepower. In 1999, the pi heads were introduced and horsepower rose to 260 horsepower. There is also the SVO 2v head. They are a bit … WebNov 9, 2012 · That is a significant improvement over the stock 4.6L heads. The Twisted Wedge 185 heads retain the port shapes and locations of the factory Power …
4.6 head vs 5.4 head - Ford Truck Enthusiasts Forums
WebJun 13, 2024 · The new intake highlighted a more durable design (96-98 intakes were prone to cracking) as well as increased runner length and size. The combination of the two, heads and intake, resulted in the 35 HP … WebMay 25, 2009 · This is based on the cylinder head type and camshaft specs. There are little differences through the years,but as far as power potential-the above is true. I've driven both PI head and NPI head trucks- the '01 F150 work truck with PI heads (supercab 4.6L/4R70W 2WD) compared to my old '98 F150 with NPI heads and PI cams (supercab … gabby thornton coffee table
*NEW* SPE SHORT BLOCK - Snyder Performance Engineering
WebJun 18, 2015 · 1,378. 234. Ontario, Canada. Jun 18, 2015. #2. The 5.4L 2V and 4.6L 2V PI heads are the same. Swap em over and pick yourself up a PI car intake manifold and have at it. Keep in mind, truck heads will be Windsor heads and you've got a Romeo engine, so you'll probably need the valve covers they came with too. WebDec 9, 2005 · Yes, PI heads have different intake ports and larger camshafts than the non-PI heads. And you must use the PI intake with the PI heads. The compression ratio will increase to around 10.0 to 1 if you install PI heads on a non-PI block. But a PI head is the same on the 4.6L and the 5.4L. WebJun 1, 2010 · With a swap of the cylinder heads and Trick Flow 0.580-inch-lift cams on our 4.6 Junkyard Jewel, we were rewarded with 58 peak horsepower and 33 lb-ft over our … gabby tonal