GEN V Chev smallblock - LT1

[Scuba-Steve]

^ is ford's 5.0 considerably heavier than this? will be interesting to see how they compare

The N/A Coyote is a bit lighter at 444 lbs. I imagine the FPV variant with a blower would be a fair wack heavier though

The next question is where is the weight, coyotes big dohc heads makes the COG higher and probably a decent chunk wider too.

[clutch-monkey]

some further searching turned up

The Coyote is lighter than the LSx engines. (444lbs vs 466 lbs) It's also shorter by 2.6 inches, and is the same height. It is however 4.3 inches wider

however some say the weights indicated there is crate motor for the ford and full dress for the gm

[Sathanas]

Actually it looks that way. No accessories on the Coyote weight. Flywheel, aircon, power steering and alternator weren't included in that. Nor the engine cover....

[brasher]

Lots of space for a blower.

[ls400x]

I was hoping for variable lobe separation/timing yo

[Sturmovik]

According to Ford Racing Parts, a Coyote crate motor is 431lbs.

http://www.fordracingparts.com/downl...6007-A50NA.pdf

[morerevsm3]

"LT1 is the first OHV engine with Direct Injection"

really?, so any previous direct injection motor was a rotary or sidevalve?

[Soopy]

"LT1 is the first OHV engine with Direct Injection"

really?, so any previous direct injection motor was a rotary or sidevalve?

lol, I had to scratch me head at that. I've worked on Perkins Diesels from the 1960's that were push rod, direct injection motors...

[ButtaS15]

"LT1 is the first OHV engine with Direct Injection"

really?, so any previous direct injection motor was a rotary or sidevalve?

I imagine they meant the first pushrod OHV Gasoline direct injected engine.

Tell me, now that they've mastered CVVT for cam in block engines, how hard would it be to also go variable valve lift on one of these jiggers as well i.e. solenoid actuated lift adjusting mechanism in the lifters or the like......kinda opposite to the collapsible lifter for the DOD? One would think that maximising vlave lift would be one of the simple benefits of the pushrod design that would enable more HP from potentially lower capacity engines or am I off base?

[mondo2000]

Say what you want about pushrods Im sure the engineers appreciate lighter shorter more powerful engines.

2-stroke engines are very compact, light and powerful, but I don't see them being used much these days. Engineering decisions are full of compromises and trade-offs, which depend on the application. Engine height isn't as important as it used to be because bonnet lines are getting higher, as the base of the windscreen is moving up and forward (in sedans anyway). The corvette is an exception.

[9triton]

I imagine they meant the first pushrod OHV Gasoline direct injected engine.

Tell me, now that they've mastered CVVT for cam in block engines, how hard would it be to also go variable valve lift on one of these jiggers as well i.e. solenoid actuated lift adjusting mechanism in the lifters or the like......kinda opposite to the collapsible lifter for the DOD? One would think that maximising vlave lift would be one of the simple benefits of the pushrod design that would enable more HP from potentially lower capacity engines or am I off base?

saw a 1905 cadilac (yep 107 years old) -a few weeks ago - single cylineder - no throttle . had a mechanical mechanisim for varying inlet valve lift- which was the 'throttle' .

nothing new under the sun....


look up fiat multiair - variable valve timing and lift - all done hydraulcally

http://www.autozine.org/technical_sc...ine/vvt_6.html

[Captain_Slow]

2-stroke engines are very compact, light and powerful, but I don't see them being used much these days. Engineering decisions are full of compromises and trade-offs, which depend on the application. Engine height isn't as important as it used to be because bonnet lines are getting higher, as the base of the windscreen is moving up and forward (in sedans anyway). The corvette is an exception.

Bonnet lines are getting higher because you're required to have a certain amount of space between the engine and bonnet to protect wayward pedestrians. (I'd prefer car styling wasn't ruined, personally, but the priorities of safety legislators apparently vary from mine). If you have a lower engine, you can still have a lower bonnet line.

This is the reason why so many FWD cars look completely stupid at the front end now - tall engines sitting ahead of the front axle line plus these regs equals very high bonnet - which then leads to a high belt line and roofline to try and balance the styling.

[Nero]

Great engine. Packaging constraints, emissions and ncap will all have had their influence. It will be interesting to see how much support they provide to the aftermarket as I suspect that few will be able to work the Dfi and vct.

[9triton]

Great engine. Packaging constraints, emissions and ncap will all have had their influence. It will be interesting to see how much support they provide to the aftermarket as I suspect that few will be able to work the Dfi and vct.

American after market are probably already designing carb manifolds

[goose]

Intake ports look a bit smaller than the Gen3/4 ports to accommodate the injectors?