ZR-1 Net Registry Forums - View Single Post

mike100 · 08-22-2015

The Coyote is only 430 lbs if I recall correctly. It is certainly not the cheapest way to make an 11 second street toy, but there are a couple of useful advantages that I consider:

1) True dual cam VVT. The powerband from 300 cubic inches is really amazing and you don't have to always shift to keep it above 4000 rpms like you do on an LS engine when you get caught on the dull part of the low rpm power curve.
2) no surge of massive torque to blow off the rear tires as with large displacements. I find that this type of engine easier to drive a car at its limits than a big inch one.
3) There are sometimes intangible properties like an engines willing to change speed and rev although with the coyotes borrowed long stroke from the modular engines, the advantage might be for the LS. Just like diesels- they might have 800 lb/ft of torque, but they are locomotive slow to rev up. My mustang is geared so much lower than my vettes- it certainly seems faster to rev out- the 5.0 engine takes it in stride and seems balanced better. (maybe not better than the LT5, but certainly than the LS3).

conclusion: the transmission might be the more important discussion, but true variable valve timing raises the area under the curve for torque so that coupled with close ratio gearing is really hard to beat.

08-22-2015	#125
mike100 Join Date: Feb 2011 Location: San Marcos CA Posts: 1,786	Re: Point/Counterpoint: DOHC v OHV The Coyote is only 430 lbs if I recall correctly. It is certainly not the cheapest way to make an 11 second street toy, but there are a couple of useful advantages that I consider: 1) True dual cam VVT. The powerband from 300 cubic inches is really amazing and you don't have to always shift to keep it above 4000 rpms like you do on an LS engine when you get caught on the dull part of the low rpm power curve. 2) no surge of massive torque to blow off the rear tires as with large displacements. I find that this type of engine easier to drive a car at its limits than a big inch one. 3) There are sometimes intangible properties like an engines willing to change speed and rev although with the coyotes borrowed long stroke from the modular engines, the advantage might be for the LS. Just like diesels- they might have 800 lb/ft of torque, but they are locomotive slow to rev up. My mustang is geared so much lower than my vettes- it certainly seems faster to rev out- the 5.0 engine takes it in stride and seems balanced better. (maybe not better than the LT5, but certainly than the LS3). conclusion: the transmission might be the more important discussion, but true variable valve timing raises the area under the curve for torque so that coupled with close ratio gearing is really hard to beat.